EXHIBIT 32

                           CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350


In connection with the Quarterly Report of Barrett Business Services,  Inc. (the
"Company")  on Form 10-Q for the period ended  September 30, 2004, as filed with
the Securities and Exchange  Commission on the date hereof (the  "Report"),  the
undersigned certify, pursuant to 18 U.S.C. ss. 1350, that:

      (1) The Report fully  complies with the  requirements  of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

      (2) The  information  contained  in the  Report  fairly  presents,  in all
material  respects,  the  financial  condition  and results of operations of the
Company.




/s/ William W. Sherertz                        /s/ Michael D. Mulholland
- -----------------------                        -------------------------
William W. Sherertz                            Michael D. Mulholland
Chief Executive Officer                        Chief Financial Officer
November 11, 2004                              November 11, 2004