Barrett Business Services, Inc. revenue for the last year amounted to 1.07 B USD, the most of which — 982.27 M USD — came from its highest performing source at the moment, Professional Employer Services, the year earlier bringing 937.36 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Barrett Business Services, Inc. 1.07 B USD, and the year before that — 1.05 B USD.