Basis of Presentation	3 Months Ended
Mar. 29, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited consolidated financial statements of Kelly Services, Inc. (the “Company,” “Kelly,” “we” or “us”) have been prepared in accordance with Rule 10-01 of Regulation S-X and do not include all the information and notes required by generally accepted accounting principles (“GAAP”) for complete financial statements. In the opinion of management, all adjustments, including normal recurring adjustments, necessary for a fair statement of the results of the interim periods, have been made. The results of operations for such interim periods are not necessarily indicative of results of operations for a full year. The unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto for the fiscal year ended December 28, 2025, included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 12, 2026 (the 2025 consolidated financial statements). There were no changes in accounting policies from those disclosed in the Form 10-K. The Company’s first fiscal quarter ended on March 29, 2026 and March 30, 2025, each of which contained 13 weeks. Certain reclassifications have been made to the prior year's consolidated financial statements to conform to the current year's presentation, as discussed in the Revenue and Segment Disclosures footnotes. All amounts are reported in millions except for share and per share data.

Basis of Presentation

3 Months Ended

Mar. 29, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Basis of Presentation

The accompanying unaudited consolidated financial statements of Kelly Services, Inc. (the “Company,” “Kelly,” “we” or “us”) have been prepared in accordance with Rule 10-01 of Regulation S-X and do not include all the information and notes required by generally accepted accounting principles (“GAAP”) for complete financial statements. In the opinion of management, all adjustments, including normal recurring adjustments, necessary for a fair statement of the results of the interim periods, have been made. The results of operations for such interim periods are not necessarily indicative of results of operations for a full year. The unaudited consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto for the fiscal year ended December 28, 2025, included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 12, 2026 (the 2025 consolidated financial statements). There were no changes in accounting policies from those disclosed in the Form 10-K. The Company’s first fiscal quarter ended on March 29, 2026 and March 30, 2025, each of which contained 13 weeks.

Certain reclassifications have been made to the prior year's consolidated financial statements to conform to the current year's presentation, as discussed in the Revenue and Segment Disclosures footnotes. All amounts are reported in millions except for share and per share data.