8-K

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                           ---------------------------

                                    FORM 8-K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934

                Date of Report (Date of earliest event reported):

                                 August 8, 2005

                         BARRETT BUSINESS SERVICES, INC.
               (Exact name of registrant as specified in charter)

                                    Maryland
                 (State or other jurisdiction of incorporation)

                                     0-21886
                                (SEC File Number)

                                   52-0812977
                        (IRS Employer Identification No.)

         4724 S.W. Macadam Avenue
         Portland, Oregon                                    97239
         (Address of principal executive offices)           (Zip Code)

               Registrant's telephone number, including area code:

                                 (503) 220-0988

      Check the  appropriate  box below if the Form 8-K  filing is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

|_|   Written  communications  pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

|_|   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)

|_|   Pre-commencement  communications  pursuant  to  Rule  14d-2(b)  under  the
      Exchange Act (17 CFR 240.14d-2(b))

|_|   Pre-commencement  communications  pursuant  to  Rule  13e-4(c)  under  the
      Exchange Act (17 CFR 240.13e-4(c))






Item 8.01.  Other Events.

On August 8, 2005,  Barrett Business Services,  Inc. (the "Company"),  completed
its recent common stock offering, selling an additional 320,850 shares of common
stock to the underwriters of that offering to cover  over-allotments.  Including
the 1,864,000 shares of common stock sold initially, the Company sold a total of
2,184,850  shares of common  stock in the  offering  at a price to the public of
$16.25 per share.

A copy of the Company's  August 8, 2005,  press release is filed as Exhibit 99.1
hereto and is incorporated herein by reference.

Item 9.01.  Financial Statements and Exhibits.

(c) Exhibits: The following exhibit is filed with this Form 8-K:

      99.1  Press Release dated August 8, 2005.

                                   SIGNATURES

            Pursuant to the requirements of the Securities Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                    BARRETT BUSINESS SERVICES, INC.


Dated:  August 8, 2005              By: /s/ Michael D. Mulholland
                                        --------------------------------------
                                        Michael D. Mulholland
                                        Vice President - Finance

EX-99

                                                                    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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