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

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 4)*

                         Barrett Business Services, Inc.
                                (Name of Issuer)

                          Common Stock, $.01 par value
                         (Title of Class of Securities)

                                   68463 10 8
                                 (CUSIP Number)

                                 March 15, 2004
             (Date of Event Which Requires Filing of the Statement)

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

      / /   Rule 13d-1(b)

      / /   Rule 13d-1(c)

      /X/   Rule 13d-1(d)


* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

                               Page 1 of 5 pages




CUSIP NO. 68463 10 8
--------------------------------------------------------------------------------
1.       Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only).

         Nancy B. Sherertz
--------------------------------------------------------------------------------

2.       Check the appropriate box if a Member of a Group (See Instructions) N/A

                  a)    [ ]
                  b)    [ ]
--------------------------------------------------------------------------------
3.       SEC use only: .........................................................
--------------------------------------------------------------------------------
4.       Citizenship or Place of Organization:
         United States of America
--------------------------------------------------------------------------------
Number of      5. Sole Voting Power: 1,262,510*
Shares         -----------------------------------------------------------------
Beneficially   6. Shared Voting Power: -0-
Owned by       -----------------------------------------------------------------
Each           7. Sole Dispositive Power: 1,262,510*
Reporting      -----------------------------------------------------------------
Person With    8. Shared Dispositive Power: -0-
--------------------------------------------------------------------------------
9.                Aggregate Amount  Beneficially Owned by Each Reporting Person:
                  1,262,510*
--------------------------------------------------------------------------------
10.               Check if the  Aggregate  Amount  in Row (9)  Excludes  Certain
                  Shares (See Instructions): N/A
--------------------------------------------------------------------------------
11.               Percent of Class Represented by Amount in Row 9: 22.4%
--------------------------------------------------------------------------------
12.               Type of Reporting Person (See Instructions): IN
--------------------------------------------------------------------------------

                               Page 2 of 5 pages



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

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

Item 2
            (a)   Name of Person Filing: Nancy B. Sherertz

            (b)   Address of Principal Business Office, or, if none,  Residence:
                  27023 Rigby Lot Road, Easton, MD 21601

            (c)   Citizenship: United States of America

            (d)   Title of Class of Securities: Common Stock, $.01 par value

            (e)   CUSIP Number: 68463 10 8

Item 3            If  this statement is filed pursuant  to ss.  240.13d-1(b)  or
                  240.13d-2(b) or (c), check whether the person filing is a: N/A

            (a)   / / Broker or dealer  registered  under  section 15 of the Act
                  (15 U.S.C. 78o).

            (b)   / / Bank as defined  in section  3(a)(6) of the Act (15 U.S.C.
                  78c).

            (c)   / /  Insurance  company as defined in section  3(a)(19) of the
                  Act (15 U.S.C. 78c).

            (d)   / /  Investment  company  registered  under  section  8 of the
                  Investment Company Act of 1940 (15 U.S.C. 80a-8).

            (e)   /   /   An    investment    adviser   in    accordance    with
                  ss.240.13d-1(b)(1)(ii)(E);

            (f)   / / An employee  benefit plan or endowment  fund in accordance
                  with ss.240.13d-1(b)(1)(ii)(F);

            (g)   / / A parent  holding  company or control person in accordance
                  with ss.240.13d-1(b)(1)(ii)(G);


                               Page 3 of 5 pages



            (h)   / / A savings  association  as defined in section  3(b) of the
                  Federal Deposit Insurance Act (12 U.S.C. 1813);

            (i)   / / A church plan that is excluded  from the  definition of an
                  investment  company under section  3(c)(14) of the  Investment
                  Company Act of 1940 (15 U.S.C. 80a-3);

            (j)   / / Group, in accordance with ss. 240.13d-1(b)(1)(ii)(J).

Item 4            Ownership.

                  Provide the  following  information  regarding  the  aggregate
number and  percentage of the class of  securities  of the issuer  identified in
Item 1.

                  (a)   Amount Beneficially Owned: 1,262,510*

                  (b)   Percent of Class: 22.4%

                  (c)   Number of shares as to which the person has:

                        (i)      Sole  power  to vote  or to  direct  the  vote:
                                 1,262,510*

                        (ii)     Shared power to vote or to direct the vote: -0-

                        (iii)    Sole   power  to   dispose  or  to  direct  the
                                 disposition of: 1,262,510*

                        (iv)     Shared  power  to  dispose  or  to  direct  the
                                 disposition of: -0-

Item 5            Ownership of Five Percent or Less of a Class: N/A

Item 6            Ownership  of More Than  Five  Percent  on  Behalf of  Another
                  Person: N/A

Item 7            Identification  and  Classification  of the  Subsidiary  which
                  Acquired the Security  Being Reported on by the Parent Holding
                  Company: N/A

                                Page 4 of 5 pages



Item 8            Identification and Classification of Members of the Group: N/A

Item 9            Notice of Dissolution of Group: N/A

Item 10           Certification:  N/A


                                    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:      March 31, 2004

                                          Signature:  /s/ Nancy B. Sherertz
                                                      ---------------------

                                          Name/Title: Nancy B.Sherertz

*     This number includes indirect beneficial ownership of 3,310 shares held by
      the reporting person's minor children, which she disclaims.


ATTENTION:        Intentional  misstatements  or  omissions  of fact  constitute
                  federal criminal violations (See 18 USC Section 1001)