Related Party Transactions and Outside Related Director Information

Barrett Business Services, Inc. (BBSI)

4/18/2006 Proxy Information

Beginning in October 2001, the Company rented Mr. SherertzŐs personal residence in La Quinta, California, for marketing, customer relations, and business meeting purposes. The seasonal rental rates were established by a local real estate broker who handles similar properties in the La Quinta area. The Company made payments to Mr. Sherertz in the aggregate amount of $95,000 in 2005 for rental of the property.