BBSI to Present at Roth Capital Partners Conference

VANCOUVER, Wash.--(BUSINESS WIRE)--Aug. 29, 2006--Barrett Business

Services, Inc. (Nasdaq:BBSI) today announced that William W. Sherertz,

President and Chief Executive Officer, will speak to the investment

community at the Roth Capital Partners 2006 New York Conference on

September 7, 2006. The conference will be simultaneously webcast over

the Internet.

Mr. Sherertz is scheduled to speak on Thursday, September 7, 2006

at approximately 9:30 a.m. Eastern Time. Interested investors can

listen to the live audio webcast of the presentation and view

supplemental financial information by accessing the Company's web site

www.barrettbusiness.com and proceeding to the investor relations

portion of the site and then to webcasts. A replay of the audio

webcast will be available on Barrett's web site for thirty days after

posting. The webcast is also accessible at

http://www.wsw.com/webcast/roth8/bbsi/.

BBSI provides a comprehensive range of human resource management

solutions to large and small companies throughout many regions of the

United States.

CONTACT: Barrett Business Services, Inc.

William W. Sherertz, 360-828-0700

SOURCE: Barrett Business Services, Inc.

Released August 29, 2006