0000902791 2026-06-01 2026-06-01 false 0000902791 8-K 2026-06-01 BARRETT BUSINESS SERVICES, INC. MD 0-21886 52-0812977 8100 NE Parkway Drive Vancouver WA 98662 (360) 828-0700 false false false false Common Stock, par value $0.01 per share BBSI NASDAQ false