Exhibit 99.1

NEWS RELEASE

For Immediate Release                   Contact:      William W. Sherertz
                                                      President and
                                                      Chief Executive Officer

                                      Telephone:      (503) 220-0988

                 BBSI ANNOUNCES THE SUCCESSFUL COMPLETION OF ITS
                              COMMON STOCK OFFERING

      PORTLAND,  OREGON,  August  8,  2005 -  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.

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