BARRETT BUSINESS SERVICES INC Compensation Agreements

Summary of Compensation Arrangements for Non-Employee Directors of the Registrant effective July 1, 2020 (Filed With SEC on November 4, 2020)

First and Second Amendments to the Barrett Business Services, Inc., Nonqualified Deferred Compensation Plan (Filed With SEC on May 7, 2019)

BARRETT BUSINESS SERVICES, INC. NONQUALIFIED DEFERRED COMPENSATION PLAN 1 SECTION 1 Purpose and Administration (Filed With SEC on August 9, 2017)

BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS (Filed With SEC on August 9, 2017)

BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS (Filed With SEC on March 8, 2017)

Exhibit 10.16 Barrett Business Services, Inc. Summary of Compensation Arrangements for Non-Employee Directors (Filed With SEC on March 14, 2014)

BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS (Filed With SEC on March 15, 2013)

BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS (Filed With SEC on March 15, 2012)

BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS (Filed With SEC on April 1, 2011)

BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS (Filed With SEC on March 16, 2009)

BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR (Filed With SEC on March 17, 2008)