<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019ecba5-1c79-7839-b0bd-63c27b086edc,g:19cae3eb-7234-46c9-b226-10cfbf4150de-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:davey="http://www.davey.com/20260704" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.davey.com/20260704">
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2026" schemaLocation="https://xbrl.sec.gov/country/2026/country-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="davey-20260704_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="davey-20260704_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="davey-20260704_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="davey-20260704_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="DocumentandEntityInformationDocument" roleURI="http://www.davey.com/role/DocumentandEntityInformationDocument">
        <link:definition>0000001 - Document - Document and Entity Information Document</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CoverPageDocument" roleURI="http://www.davey.com/role/CoverPageDocument">
        <link:definition>0000002 - Document - Cover Page Document</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CoverPageEntityaddress" roleURI="http://www.davey.com/role/CoverPageEntityaddress">
        <link:definition>0000003 - Document - Cover Page Entity address</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CoverPageEntitytype" roleURI="http://www.davey.com/role/CoverPageEntitytype">
        <link:definition>0000004 - Document - Cover Page Entity type</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheets" roleURI="http://www.davey.com/role/CondensedConsolidatedBalanceSheets">
        <link:definition>9952151 - Statement - Condensed Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementsofOperations" roleURI="http://www.davey.com/role/CondensedConsolidatedStatementsofOperations">
        <link:definition>9952152 - Statement - Condensed Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementsofComprehensiveIncomeLoss" roleURI="http://www.davey.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeLoss">
        <link:definition>9952153 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementofShareholdersEquityStatement" roleURI="http://www.davey.com/role/CondensedConsolidatedStatementofShareholdersEquityStatement">
        <link:definition>9952154 - Statement - Condensed Consolidated Statement of Shareholders' Equity Statement</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementsofCashFlows" roleURI="http://www.davey.com/role/CondensedConsolidatedStatementsofCashFlows">
        <link:definition>9952155 - Statement - Condensed Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofFinancialStatementPreparation" roleURI="http://www.davey.com/role/BasisofFinancialStatementPreparation">
        <link:definition>9952156 - Disclosure - Basis of Financial Statement Preparation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SeasonalityofBusiness" roleURI="http://www.davey.com/role/SeasonalityofBusiness">
        <link:definition>9952157 - Disclosure - Seasonality of Business</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetandSupplementalBalanceSheetInformation" roleURI="http://www.davey.com/role/AccountsReceivableNetandSupplementalBalanceSheetInformation">
        <link:definition>9952158 - Disclosure - Accounts Receivable, Net and Supplemental Balance-Sheet Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsNotes" roleURI="http://www.davey.com/role/BusinessCombinationsNotes">
        <link:definition>9952159 - Disclosure - Business Combinations (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InvestmentsDebtandEquitySecurities" roleURI="http://www.davey.com/role/InvestmentsDebtandEquitySecurities">
        <link:definition>9952160 - Disclosure - Investments, Debt and Equity Securities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IdentifiedIntangibleAssetsandGoodwillNet" roleURI="http://www.davey.com/role/IdentifiedIntangibleAssetsandGoodwillNet">
        <link:definition>9952161 - Disclosure - Identified Intangible Assets and Goodwill, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtandCommitmentsRelatedtoLettersofCredit" roleURI="http://www.davey.com/role/LongTermDebtandCommitmentsRelatedtoLettersofCredit">
        <link:definition>9952162 - Disclosure - Long-Term Debt and Commitments Related to Letters of Credit</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNotes" roleURI="http://www.davey.com/role/LeasesNotes">
        <link:definition>9952163 - Disclosure - Leases (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensation" roleURI="http://www.davey.com/role/StockBasedCompensation">
        <link:definition>9952164 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.davey.com/role/IncomeTaxes">
        <link:definition>9952165 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveIncomeLoss" roleURI="http://www.davey.com/role/AccumulatedOtherComprehensiveIncomeLoss">
        <link:definition>9952166 - Disclosure - Accumulated Other Comprehensive Income (Loss)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PerShareAmountsandCommonSharesOutstanding" roleURI="http://www.davey.com/role/PerShareAmountsandCommonSharesOutstanding">
        <link:definition>9952167 - Disclosure - Per Share Amounts and Common Shares Outstanding</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperationsbyBusinessSegment" roleURI="http://www.davey.com/role/OperationsbyBusinessSegment">
        <link:definition>9952168 - Disclosure - Operations by Business Segment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionNotes" roleURI="http://www.davey.com/role/RevenueRecognitionNotes">
        <link:definition>9952169 - Disclosure - Revenue Recognition (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsandFinancialInstruments" roleURI="http://www.davey.com/role/FairValueMeasurementsandFinancialInstruments">
        <link:definition>9952170 - Disclosure - Fair Value Measurements and Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Commitmentsandcontingencies" roleURI="http://www.davey.com/role/Commitmentsandcontingencies">
        <link:definition>9952171 - Disclosure - Commitments and contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheDavey401KSOPandEmployeeStockOwnershipPlanNotes" roleURI="http://www.davey.com/role/TheDavey401KSOPandEmployeeStockOwnershipPlanNotes">
        <link:definition>9952172 - Disclosure - The Davey 401KSOP and Employee Stock Ownership Plan (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofFinancialStatementPreparationPolicies" roleURI="http://www.davey.com/role/BasisofFinancialStatementPreparationPolicies">
        <link:definition>9955511 - Disclosure - Basis of Financial Statement Preparation (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesPolicies" roleURI="http://www.davey.com/role/IncomeTaxesPolicies">
        <link:definition>9955512 - Disclosure - Income Taxes (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingPolicies" roleURI="http://www.davey.com/role/SegmentReportingPolicies">
        <link:definition>9955513 - Disclosure - Segment Reporting (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentandContingenciesPolicies" roleURI="http://www.davey.com/role/CommitmentandContingenciesPolicies">
        <link:definition>9955514 - Disclosure - Commitment and Contingencies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountingPoliciesTables" roleURI="http://www.davey.com/role/AccountingPoliciesTables">
        <link:definition>9955515 - Disclosure - Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetandSupplementalBalanceSheetInformationTables" roleURI="http://www.davey.com/role/AccountsReceivableNetandSupplementalBalanceSheetInformationTables">
        <link:definition>9955516 - Disclosure - Accounts Receivable, Net and Supplemental Balance-Sheet Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsBusinessCombinationsTables" roleURI="http://www.davey.com/role/BusinessCombinationsBusinessCombinationsTables">
        <link:definition>9955517 - Disclosure - Business Combinations Business Combinations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InvestmentsDebtandEquitySecuritiesTables" roleURI="http://www.davey.com/role/InvestmentsDebtandEquitySecuritiesTables">
        <link:definition>9955518 - Disclosure - Investments, Debt and Equity Securities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IdentifiedIntangibleAssetsandGoodwillNetTables" roleURI="http://www.davey.com/role/IdentifiedIntangibleAssetsandGoodwillNetTables">
        <link:definition>9955519 - Disclosure - Identified Intangible Assets and Goodwill, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtandCommitmentsRelatedtoLettersofCreditTables" roleURI="http://www.davey.com/role/LongTermDebtandCommitmentsRelatedtoLettersofCreditTables">
        <link:definition>9955520 - Disclosure - Long-Term Debt and Commitments Related to Letters of Credit (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.davey.com/role/LeasesTables">
        <link:definition>9955521 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationTables" roleURI="http://www.davey.com/role/StockBasedCompensationTables">
        <link:definition>9955522 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveIncomeLossTables" roleURI="http://www.davey.com/role/AccumulatedOtherComprehensiveIncomeLossTables">
        <link:definition>9955523 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PerShareAmountsandCommonSharesOutstandingTables" roleURI="http://www.davey.com/role/PerShareAmountsandCommonSharesOutstandingTables">
        <link:definition>9955524 - Disclosure - Per Share Amounts and Common Shares Outstanding (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperationsbyBusinessSegmentTables" roleURI="http://www.davey.com/role/OperationsbyBusinessSegmentTables">
        <link:definition>9955525 - Disclosure - Operations by Business Segment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionTables" roleURI="http://www.davey.com/role/RevenueRecognitionTables">
        <link:definition>9955526 - Disclosure - Revenue Recognition (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsandFinancialInstrumentsTables" roleURI="http://www.davey.com/role/FairValueMeasurementsandFinancialInstrumentsTables">
        <link:definition>9955527 - Disclosure - Fair Value Measurements and Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheDavey401KSOPandEmployeeStockOwnershipPlanTables" roleURI="http://www.davey.com/role/TheDavey401KSOPandEmployeeStockOwnershipPlanTables">
        <link:definition>9955528 - Disclosure - The Davey 401KSOP and Employee Stock Ownership Plan (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofFinancialStatementPreparationDetails" roleURI="http://www.davey.com/role/BasisofFinancialStatementPreparationDetails">
        <link:definition>9955529 - Disclosure - Basis of Financial Statement Preparation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsReceivableNetandSupplementalBalanceSheetInformationDetails" roleURI="http://www.davey.com/role/AccountsReceivableNetandSupplementalBalanceSheetInformationDetails">
        <link:definition>9955530 - Disclosure - Accounts Receivable, Net and Supplemental Balance-Sheet Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsDetails" roleURI="http://www.davey.com/role/BusinessCombinationsDetails">
        <link:definition>9955531 - Disclosure - Business Combinations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InvestmentsDebtandEquitySecuritiesDetails" roleURI="http://www.davey.com/role/InvestmentsDebtandEquitySecuritiesDetails">
        <link:definition>9955532 - Disclosure - Investments, Debt and Equity Securities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IdentifiedIntangibleAssetsandGoodwillNetDetails" roleURI="http://www.davey.com/role/IdentifiedIntangibleAssetsandGoodwillNetDetails">
        <link:definition>9955533 - Disclosure - Identified Intangible Assets and Goodwill, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IdentifiedIntangibleAssetsandGoodwillNetScheduleofGoodwillDetails" roleURI="http://www.davey.com/role/IdentifiedIntangibleAssetsandGoodwillNetScheduleofGoodwillDetails">
        <link:definition>9955534 - Disclosure - Identified Intangible Assets and Goodwill, Net Schedule of Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtandCommitmentsRelatedtoLettersofCreditLongTermDebtDetails" roleURI="http://www.davey.com/role/LongTermDebtandCommitmentsRelatedtoLettersofCreditLongTermDebtDetails">
        <link:definition>9955535 - Disclosure - Long-Term Debt and Commitments Related to Letters of Credit Long-Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtandCommitmentsRelatedtoLettersofCreditNarrativeDetails" roleURI="http://www.davey.com/role/LongTermDebtandCommitmentsRelatedtoLettersofCreditNarrativeDetails">
        <link:definition>9955536 - Disclosure - Long-Term Debt and Commitments Related to Letters of Credit (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtandCommitmentsRelatedtoLettersofCreditDetails" roleURI="http://www.davey.com/role/LongTermDebtandCommitmentsRelatedtoLettersofCreditDetails">
        <link:definition>9955537 - Disclosure - Long-Term Debt and Commitments Related to Letters of Credit (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesAssetsandliabilitiesDetails" roleURI="http://www.davey.com/role/LeasesAssetsandliabilitiesDetails">
        <link:definition>9955538 - Disclosure - Leases Assets and liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesDetails" roleURI="http://www.davey.com/role/LeasesDetails">
        <link:definition>9955539 - Disclosure - Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesRemainingleasetermDetails" roleURI="http://www.davey.com/role/LeasesRemainingleasetermDetails">
        <link:definition>9955540 - Disclosure - Leases Remaining lease term (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesLeasesweightedaveragediscountrateDetails" roleURI="http://www.davey.com/role/LeasesLeasesweightedaveragediscountrateDetails">
        <link:definition>9955541 - Disclosure - Leases Leases weighted average discount rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesSupplementalcashflowinformationrealtedtoleasesDetails" roleURI="http://www.davey.com/role/LeasesSupplementalcashflowinformationrealtedtoleasesDetails">
        <link:definition>9955542 - Disclosure - Leases Supplemental cash flow information realted to leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesMaturityDetails" roleURI="http://www.davey.com/role/LeasesMaturityDetails">
        <link:definition>9955543 - Disclosure - Leases Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesMaturityDetails_1" roleURI="http://www.davey.com/role/LeasesMaturityDetails_1">
        <link:definition>9955543 - Disclosure - Leases Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationDetails" roleURI="http://www.davey.com/role/StockBasedCompensationDetails">
        <link:definition>9955544 - Disclosure - Stock-Based Compensation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDetails" roleURI="http://www.davey.com/role/IncomeTaxesDetails">
        <link:definition>9955545 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccumulatedOtherComprehensiveIncomeLossDetails" roleURI="http://www.davey.com/role/AccumulatedOtherComprehensiveIncomeLossDetails">
        <link:definition>9955546 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PerShareAmountsandCommonSharesOutstandingDetails" roleURI="http://www.davey.com/role/PerShareAmountsandCommonSharesOutstandingDetails">
        <link:definition>9955547 - Disclosure - Per Share Amounts and Common Shares Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PerShareAmountsandCommonSharesOutstandingStocksubscriptionDetails" roleURI="http://www.davey.com/role/PerShareAmountsandCommonSharesOutstandingStocksubscriptionDetails">
        <link:definition>9955548 - Disclosure - Per Share Amounts and Common Shares Outstanding Stock subscription (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OperationsbyBusinessSegmentDetails" roleURI="http://www.davey.com/role/OperationsbyBusinessSegmentDetails">
        <link:definition>9955549 - Disclosure - Operations by Business Segment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionDetails" roleURI="http://www.davey.com/role/RevenueRecognitionDetails">
        <link:definition>9955550 - Disclosure - Revenue Recognition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionContractwithcustomerassetandliabilityDetails" roleURI="http://www.davey.com/role/RevenueRecognitionContractwithcustomerassetandliabilityDetails">
        <link:definition>9955551 - Disclosure - Revenue Recognition Contract with customer, asset and liability (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsandFinancialInstrumentsDetails" roleURI="http://www.davey.com/role/FairValueMeasurementsandFinancialInstrumentsDetails">
        <link:definition>9955552 - Disclosure - Fair Value Measurements and Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsandFinancialInstrumentsFairvalueoffinancialinstrumentsDetails" roleURI="http://www.davey.com/role/FairValueMeasurementsandFinancialInstrumentsFairvalueoffinancialinstrumentsDetails">
        <link:definition>9955553 - Disclosure - Fair Value Measurements and Financial Instruments Fair value of financial instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandcontingenciesDetailsDetails" roleURI="http://www.davey.com/role/CommitmentsandcontingenciesDetailsDetails">
        <link:definition>9955554 - Disclosure - Commitments and contingencies Details (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheDavey401KSOPandEmployeeStockOwnershipPlanDetails" roleURI="http://www.davey.com/role/TheDavey401KSOPandEmployeeStockOwnershipPlanDetails">
        <link:definition>9955555 - Disclosure - The Davey 401KSOP and Employee Stock Ownership Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="davey_DocumentAndEntityInformationAbstract" abstract="true" name="DocumentAndEntityInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="davey_CoverPageAbstract" abstract="true" name="CoverPageAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="davey_EntityAddressAbstract" abstract="true" name="EntityAddressAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="davey_EntitytypeAbstract" abstract="true" name="EntitytypeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="davey_StockholdersEquityBeforeTreasuryStockAndCommonSharesSubscriptionReceivable" abstract="false" name="StockholdersEquityBeforeTreasuryStockAndCommonSharesSubscriptionReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_Commonstocksharesoutstandingbeforetreasuryshares" abstract="false" name="Commonstocksharesoutstandingbeforetreasuryshares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_CommonSharesSubscribedUnissuedMember" abstract="true" name="CommonSharesSubscribedUnissuedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_AccountsReceivableNetandSupplementalBalanceSheetInformationAbstractAbstract" abstract="true" name="AccountsReceivableNetandSupplementalBalanceSheetInformationAbstractAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="davey_PerShareAmountsAndSharesOutstandingTextBlock" abstract="false" name="PerShareAmountsAndSharesOutstandingTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="davey_TheDavey401KSOPandEmployeeStockOwnershipPlanAbstract" abstract="true" name="TheDavey401KSOPandEmployeeStockOwnershipPlanAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="davey_ScheduleofassetsandliabilitiesleasesTableTextBlock" abstract="false" name="ScheduleofassetsandliabilitiesleasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="davey_SupplementalcashflowinformationleasesTableTextBlock" abstract="false" name="SupplementalcashflowinformationleasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="davey_FinanceandoperatingleaseliabilitymaturityTableTextBlock" abstract="false" name="FinanceandoperatingleaseliabilitymaturityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="davey_InvestmentsCurrentFairValueDisclosure" abstract="false" name="InvestmentsCurrentFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_Contractwithcustomerliabilitycustomerdepositscurrent" abstract="false" name="Contractwithcustomerliabilitycustomerdepositscurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_CalEngineeringMember" abstract="true" name="CalEngineeringMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_WhitneyTreeAndGreenTreeMember" abstract="true" name="WhitneyTreeAndGreenTreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_InitialCashPaidToAcquireBusinesses" abstract="false" name="InitialCashPaidToAcquireBusinesses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_AcquisitionWorkingCapitalAdjustmentPaid" abstract="false" name="AcquisitionWorkingCapitalAdjustmentPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingSupplies" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingSupplies" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_ContingentConsiderationMeasurementPeriodAdjustment" abstract="false" name="ContingentConsiderationMeasurementPeriodAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_WorkingCapitalSettlementMeasurementPeriodAdjustment" abstract="false" name="WorkingCapitalSettlementMeasurementPeriodAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_UtilityServicesMember" abstract="true" name="UtilityServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_ResidentialandCommercialServicesMember" abstract="true" name="ResidentialandCommercialServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_ScheduleOfLongTermDebtTable" abstract="true" name="ScheduleOfLongTermDebtTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="davey_SwinglineborrowingsMember" abstract="true" name="SwinglineborrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_A3.99SeniorunsecurednotesMember" abstract="true" name="A3.99SeniorunsecurednotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_A4.00SeniorunsecurednotesMember" abstract="true" name="A4.00SeniorunsecurednotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_A6.19SeniorUnsecuredNotesMember" abstract="true" name="A6.19SeniorUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_A5.19SeniorUnsecuredNotesMember" abstract="true" name="A5.19SeniorUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_TermLoansMember" abstract="true" name="TermLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_AccountsreceivablesecuritizationMember" abstract="true" name="AccountsreceivablesecuritizationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_NumberOfPrincipalPayments" abstract="false" name="NumberOfPrincipalPayments" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="davey_BaseRateFederalFundsMember" abstract="true" name="BaseRateFederalFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_Interestcoverageratio" abstract="false" name="Interestcoverageratio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="davey_Unsecureddebtadditionalshelfnotecapacityallowedbycreditfacility" abstract="false" name="Unsecureddebtadditionalshelfnotecapacityallowedbycreditfacility" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_AnniversaryWhenPrincipalPaymentsBegin" abstract="false" name="AnniversaryWhenPrincipalPaymentsBegin" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="davey_Unusedcommitmentfeethresholdpercent" abstract="false" name="Unusedcommitmentfeethresholdpercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="davey_Debtinstrumentvariableratebaseratecalculationdefaultrate" abstract="false" name="Debtinstrumentvariableratebaseratecalculationdefaultrate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="davey_UnsecuredDebtCurrentBorrowingCapacity" abstract="false" name="UnsecuredDebtCurrentBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_LineOfCreditFacilityAmountCommitted" abstract="false" name="LineOfCreditFacilityAmountCommitted" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_DebtInstrumentAdjustmentToEBITDAMaximumAmount" abstract="false" name="DebtInstrumentAdjustmentToEBITDAMaximumAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_Rightofuseassets" abstract="false" name="Rightofuseassets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_Leaseliabilityoperatingandfinance" abstract="false" name="Leaseliabilityoperatingandfinance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_IncomeandexpenseslesseeTable" abstract="true" name="IncomeandexpenseslesseeTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="davey_IncomestatementlineitemAxis" abstract="true" name="IncomestatementlineitemAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="davey_IncomestatementlineitemDomain" abstract="true" name="IncomestatementlineitemDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_OperatingLeaseExpenseIncludedInOperatingExpenseMember" abstract="true" name="OperatingLeaseExpenseIncludedInOperatingExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_OperatingLeaseExpenseIncludedInSellingExpenseMember" abstract="true" name="OperatingLeaseExpenseIncludedInSellingExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_OperatingLeaseExpenseIncludedInGeneralAndAdministrativeExpenseMember" abstract="true" name="OperatingLeaseExpenseIncludedInGeneralAndAdministrativeExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_IncomeandexpenseslesseeLineItems" abstract="true" name="IncomeandexpenseslesseeLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="davey_TheDaveyEmployeeStockPurchasePlanMember" abstract="true" name="TheDaveyEmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_EmployeePRSUsMember" abstract="true" name="EmployeePRSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_NonemployeeDirectorRSUsMember" abstract="true" name="NonemployeeDirectorRSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_Sharebasedcompensationarrangementbysharebasedpaymentawardpercentageofoutstandingandavailableforgrantmaximum" abstract="false" name="Sharebasedcompensationarrangementbysharebasedpaymentawardpercentageofoutstandingandavailableforgrantmaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="davey_Estimatedannualeffectivetaxrate" abstract="false" name="Estimatedannualeffectivetaxrate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="davey_PerShareAmountsAndCommonSharesOutstandingTable" abstract="true" name="PerShareAmountsAndCommonSharesOutstandingTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="davey_PermanentequityMember" abstract="true" name="PermanentequityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_TemporaryequityMember" abstract="true" name="TemporaryequityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_WeightedAverageNumberOfSharesPartiallyPaidShareSubscriptions" abstract="false" name="WeightedAverageNumberOfSharesPartiallyPaidShareSubscriptions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_IncrementalCommonSharesAttributableToExerciseOfStockSubscriptionPurchaseRights" abstract="false" name="IncrementalCommonSharesAttributableToExerciseOfStockSubscriptionPurchaseRights" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_StockIssuedDuringPeriodSharesStockSubscription" abstract="false" name="StockIssuedDuringPeriodSharesStockSubscription" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingTotalNumberOfSharesOffered" abstract="false" name="StockSubscriptionOfferingTotalNumberOfSharesOffered" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingSubscriptionPrice" abstract="false" name="StockSubscriptionOfferingSubscriptionPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingNumberOfSharesSubscribed" abstract="false" name="StockSubscriptionOfferingNumberOfSharesSubscribed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingValueOfSharesSubscribed" abstract="false" name="StockSubscriptionOfferingValueOfSharesSubscribed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingMinimumFinancedAmount" abstract="false" name="StockSubscriptionOfferingMinimumFinancedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingDownPayment" abstract="false" name="StockSubscriptionOfferingDownPayment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingTerm" abstract="false" name="StockSubscriptionOfferingTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingMinimumInterestRateOffered" abstract="false" name="StockSubscriptionOfferingMinimumInterestRateOffered" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingInterestRate" abstract="false" name="StockSubscriptionOfferingInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingMinimumAmountToReceiveRight" abstract="false" name="StockSubscriptionOfferingMinimumAmountToReceiveRight" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingNumberOfSharesPurchasedToReceiveOneRight" abstract="false" name="StockSubscriptionOfferingNumberOfSharesPurchasedToReceiveOneRight" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_StockSubscriptionOfferingNumberOfRightsIssued" abstract="false" name="StockSubscriptionOfferingNumberOfRightsIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_Stocksubscriptionofferingrightexpirationterm" abstract="false" name="Stocksubscriptionofferingrightexpirationterm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="davey_EquipmentAndFuelExpense" abstract="false" name="EquipmentAndFuelExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_SubcontractorExpense" abstract="false" name="SubcontractorExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_OtherSegmentExpenses" abstract="false" name="OtherSegmentExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_TreeandplantcareMember" abstract="true" name="TreeandplantcareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_GroundsmaintenanceMember" abstract="true" name="GroundsmaintenanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_StormdamageservicesMember" abstract="true" name="StormdamageservicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_ConsultingandotherMember" abstract="true" name="ConsultingandotherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_ScheduleOfCommitmentsAndContingenciesTable" abstract="true" name="ScheduleOfCommitmentsAndContingenciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="davey_FormerWolfemployeedefendantsMember" abstract="true" name="FormerWolfemployeedefendantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_DefendantsIndictedMember" abstract="true" name="DefendantsIndictedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_DefendantsWhoPledGuiltyMember" abstract="true" name="DefendantsWhoPledGuiltyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_TypeOfLawsuitAxis" abstract="true" name="TypeOfLawsuitAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="davey_TypeOfLawsuitDomain" abstract="true" name="TypeOfLawsuitDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_NorthernCaliforniaWildfiresMember" abstract="true" name="NorthernCaliforniaWildfiresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_FireVictimsTrustMember" abstract="true" name="FireVictimsTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_RacketeerInfluencedAndCorruptOrganizationsActMember" abstract="true" name="RacketeerInfluencedAndCorruptOrganizationsActMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_AwardedDamagesMember" abstract="true" name="AwardedDamagesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_ExpensesOfLitigationMember" abstract="true" name="ExpensesOfLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_PercentOfFaultDefendantMember" abstract="true" name="PercentOfFaultDefendantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_PercentOfFaultPlaintiffMember" abstract="true" name="PercentOfFaultPlaintiffMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_GeorgiaWrongfulDeathSuitCivilCaseMember" abstract="true" name="GeorgiaWrongfulDeathSuitCivilCaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_VehicleAccidentLawsuitMember" abstract="true" name="VehicleAccidentLawsuitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_Losscontingencynumberofclaimsalleged" abstract="false" name="Losscontingencynumberofclaimsalleged" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="davey_LitigationAwardPercentOfFault" abstract="false" name="LitigationAwardPercentOfFault" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="davey_DefinedContributionPlanByMatchingTierAxis" abstract="true" name="DefinedContributionPlanByMatchingTierAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="davey_DefinedContributionPlanByMatchingTierDomain" abstract="true" name="DefinedContributionPlanByMatchingTierDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_DefinedContributionPlanTier1Member" abstract="true" name="DefinedContributionPlanTier1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_DefinedContributionPlanTier2Member" abstract="true" name="DefinedContributionPlanTier2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="davey_EmployeeStockOwnershipPlanEsopInitialSharesInEsop" abstract="false" name="EmployeeStockOwnershipPlanEsopInitialSharesInEsop" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_EmployeeStockOwnershipPlanESOPSharesAdjustedForStockSplits" abstract="false" name="EmployeeStockOwnershipPlanESOPSharesAdjustedForStockSplits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="davey_EmployeeStockOwnershipPlanEsopInitialValueInEsop" abstract="false" name="EmployeeStockOwnershipPlanEsopInitialValueInEsop" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="davey_DefinedContributionPlanEligibleAge" abstract="false" name="DefinedContributionPlanEligibleAge" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="davey_DefinedContributionPlanServiceRequirementForEligibility" abstract="false" name="DefinedContributionPlanServiceRequirementForEligibility" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="davey_Numberofputoptionperiods" abstract="false" name="Numberofputoptionperiods" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="davey_Durationofputoptionperiods" abstract="false" name="Durationofputoptionperiods" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="davey_Companysharesheldin401KSOPandESOPfairvalue" abstract="false" name="Companysharesheldin401KSOPandESOPfairvalue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
