SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D. C. 20549

                                  SCHEDULE 13G

                                (Amendment No. 1)

                         Barrett Business Services, Inc.
 -------------------------------------------------------------------------------
                                (Name of Issuer)


                     Common Stock, $.01 Par Value Per Share
 -------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    068463108

 -------------------------------------------------------------------------------
                      (CUSIP Number of Class of Securities)


                                December 31, 2003
 -------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)



Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:


[ ]  RULE 13d-1(b)
[X]  RULE 13d-1(c)
[ ]  RULE 13d-1(d)

                              (Page 1 of 11 Pages)


CUSIP No. 068463108                                           Page 2 of 11 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

     Wynnefield Partners Small Cap Value, L.P.  13-3688497

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
     (a)  [X]
     (b)

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           142,900 Shares
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         142,900 Shares
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     142,900 Shares

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     2.5% of Common Stock

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON

     PN

________________________________________________________________________________

                              (Page 2 of 11 Pages)



CUSIP No. 068463108                                           Page 3 of 11 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Wynnefield Partners Small Cap Value, L.P. I        13-3953291

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
     (a)  [X]
     (b)

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           162,400 Shares
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         162,400 Shares
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     162,400 Shares

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     2.9% of Common Stock

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON

     PN

________________________________________________________________________________

                              (Page 3 of 11 Pages)



CUSIP No. 068463108                                           Page 4 of 11 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Wynnefield Small Cap Value Offshore Fund, Ltd. (No IRS Identification No.)

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
     (a)  [X]
     (b)

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Cayman Islands

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           93,133 Shares
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         93,133 Shares
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     93,133 Shares

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     1.7% of Common Stock

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

     CO

________________________________________________________________________________

                              (Page 4 of 11 Pages)



CUSIP No. 068463108                                           Page 5 of 11 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Channel Partnership II, L.P.       22-3215653

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
     (a)  [X]
     (b)

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     New York

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           5,000 Shares
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         5,000 Shares
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     5,000 Shares

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     0.1% of Common Stock

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

     CO

________________________________________________________________________________

                              (Page 5 of 11 Pages)



CUSIP No. 068463108                                           Page 6 of 11 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Nelson Obus

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
     (a)  [X]
     (b)

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     United States of America

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           5,000 Shares (1)
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         5,000 Shares (1)
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     5,000 Shares (1)

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     0.1% of Common Stock (1)

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

     CO

________________________________________________________________________________


(1)  Nelson Obus is the general partner of Channel Partnership II, L.P., and
     accordingly, holds an indirect beneficial interest in these shares which
     are directly beneficially owned by Channel Partnership II, L.P.


                              (Page 6 of 11 Pages)


CUSIP No. 068463108                                           Page 7 of 11 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Wynnefield Capital Management, LLC 13-4018186

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
     (a)  [X]
     (b)

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     New York

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           305,300 Shares (1)
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         305,300 Shares (1)
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     305,300 Shares (1)

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     5.4% of Common Stock (1)

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON

     OO (Limited Liability Company)

________________________________________________________________________________


(1)  Wynnefield Capital Management, LLC holds an indirect beneficial interest in
     these shares which are directly beneficially owned by Wynnefield Partners
     Small Cap Value, L.P. and Wynnefield Partners Small Cap Value, L.P.I.


                              (Page 7 of 11 Pages)


CUSIP No. 068463108                                           Page 8 of 11 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Wynnefield Capital, Inc. (No IRS Identification No.)

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
     (a)  [X]
     (b)

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     Cayman Islands

________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           93,133 Shares (1)
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         93,133 Shares (1)
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     93,133 Shares (1)

________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

                                                                          [_]

________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     1.7% of Common Stock (1)

________________________________________________________________________________
12.  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

     CO

________________________________________________________________________________


(1)  Wynnefield Capital, Inc. holds an indirect beneficial interest in these
     shares which are directly beneficially owned by Wynnefield Small Cap Value
     Offshore Fund, Ltd.


                              (Page 8 of 11 Pages)


ITEM 1(a).  Name of Issuer:         Barrett Business Services, Inc.

ITEM 1(b).  Address of Issuer's Principal Executive Offices:
            4724 S.W. Macadam Avenue Portland, Oregon 97239
         -----------------------------------------------------------------------

ITEM 2(a).  Names of Persons Filing:
         Wynnefield Partners Small Cap Value, L.P. ("Partners")
         -----------------------------------------------------------------------
         Wynnefield Partners Small Cap Value, L.P. I ("Partners I")
         -----------------------------------------------------------------------
         Wynnefield Partners Small Cap Offshore Fund, Ltd. ("Fund")
         -----------------------------------------------------------------------
         Wynnefield Capital Management, LLC ("WCM")
         -----------------------------------------------------------------------
         Wynnefield Capital, Inc. ("WCI")
         -----------------------------------------------------------------------
         Channel Partnership II, L.P. ("Channel")
         -----------------------------------------------------------------------
         Nelson Obus ("Obus")
         -----------------------------------------------------------------------

ITEM 2(b).  Address of Principal Business Office Or, If None, Residence:
         450 Seventh Avenue, Suite 509, New York, New York 10123
         -----------------------------------------------------------------------

ITEM 2(c).  Citizenship:
         Partners and Partners I are Delaware Limited Partnerships
         -----------------------------------------------------------------------
         Fund and WCI are Cayman Islands Companies
         -----------------------------------------------------------------------
         WCM is a New York Limited Liability Company
         -----------------------------------------------------------------------
         Channel is a New York Limited Partnership
         -----------------------------------------------------------------------
         Obus is a citizen of the United States of America
         -----------------------------------------------------------------------

ITEM 2(d).  Title of Class of Securities: Common Stock, $.01 Par Value Per Share
         -----------------------------------------------------------------------

ITEM 2(e).  CUSIP Number:  068463108

ITEM 3.   If this Statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or
          (c), check whether the person filing is:

          None of the reporting persons is an entity specified in Rule
          13d-1(b)(1)(ii).

ITEM 4.     Ownership:

     (a)  Amount beneficially owned by all reporting persons: 403,433 Shares

     (b)  Percent of class: 7.2% of outstanding shares of Common Stock

                              (Page 9 of 11 Pages)


     (c)  Number of shares as to which the reporting persons have:

          (i)  sole power to vote or to direct the vote: 403,433 Shares

          (ii) shared power to vote or to direct the vote:

          (iii) sole power to dispose or to direct the disposition:

                403,433 Shares

          (iv) shared power to dispose or to direct the disposition:

----
ITEM 5.  Ownership of five percent or less of a class.        Not applicable.

ITEM 6.  Ownership of more than five percent on behalf of another person.

         Not applicable.

ITEM 7.  Identification and classification of the subsidiary which acquired
         the security being reported on by the parent holding company or control
         person. Not applicable.

ITEM 8.  Identification and classification of members of the group. None of the
         reporting persons who have filed this schedule is a person, as defined
         in Rule 13d-1(b)(1)(ii), promulgated pursuant to the Securities
         Exchange Act of 1934. The persons filing this schedule are identified
         in Item 2 hereof.

ITEM 9.  Notice of dissolution of group.    Not applicable.

ITEM 10. Certifications.

By signing below I certify that, to the best of my knowledge and belief, the
securities referred to above were not acquired and are not held for the purpose
of or with the effect of changing or influencing the control of the issuer of
the securities and were not acquired and are not held in connection or as a
participant in any transaction having that purpose or effect.

                             (Page 10 of 11 Pages)


                                    SIGNATURE

After reasonable inquiry, and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Dated:   February 11, 2004

                      WYNNEFIELD PARTNERS SMALL CAP VALUE, L.P.

                      By:         Wynnefield Capital Management, LLC,
                                  General Partner

                                  By:    /s/ Nelson Obus
                                         ---------------------------------
                                         Nelson Obus, Co-Managing Member

                      WYNNEFIELD PARTNERS SMALL CAP VALUE, L.P. I

                      By:         Wynnefield Capital Management, LLC,
                                  General Partner

                                  By:    /s/ Nelson Obus
                                         ---------------------------------
                                         Nelson Obus, Co-Managing Member

                      WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND, LTD.

                      By:         Wynnefield Capital, Inc.

                                  By:    /s/ Nelson Obus
                                         ---------------------------------
                                           Nelson Obus, President

                      WYNNEFIELD CAPITAL MANAGEMENT, LLC

                      By:         /s/ Nelson Obus
                                  ----------------------------------------
                                  Nelson Obus, Co-Managing Member

                      WYNNEFIELD CAPITAL, INC.

                      By:         /s/ Nelson Obus
                                  ----------------------------------------
                                       Nelson Obus, President

                      CHANNEL PARTNERSHIP II, L.P.

                      By:        /s/ Nelson Obus
                                ------------------------------------------
                                     Nelson Obus

                     /s/ Nelson Obus
                     -----------------------------------------------------
                         Nelson Obus

                             (Page 11 of 11 Pages)