BBSI Announces the Successful Completion of Its Common Stock Offering

PORTLAND, Ore., Aug 08, 2005 (BUSINESS WIRE) -- Barrett Business Services, Inc. (Nasdaq:BBSI) announced

today that, in connection with its recent follow-on common stock

offering, the underwriters have exercised in full their option to

purchase an additional 320,850 shares of BBSI common stock to cover

over-allotments. This action increases the total number of shares sold

by BBSI in the common stock offering to 2,184,850 shares at a price to

the public of $16.25 per share before underwriting discounts and

commissions.

BBSI President and Chief Executive Officer, William W. Sherertz,

stated that, "We are very pleased with the market's reception of our

follow-on common stock offering."

Roth Capital Partners, LLC, acted as the lead managing underwriter

of the offering and The Seidler Companies Incorporated served as

co-manager.

The shares of common stock were sold pursuant to a registration

statement that has been declared effective by the Securities and

Exchange Commission. The shares are offered only by means of the

prospectus related to this offering. This press release shall not

constitute an offer to sell or a solicitation of an offer to buy nor

shall there be any sale of these securities in any state or

jurisdiction in which such offer, solicitation or sale would be

unlawful prior to registration or qualification under the securities

laws of such state or jurisdiction.

BBSI provides a comprehensive range of human resource management

solutions to large and small companies throughout many regions of the

United States.

SOURCE: Barrett Business Services, Inc.

Barrett Business Services, Inc.

William W. Sherertz, 503-220-0988

Released August 8, 2005