FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * SHERERTZ NANCY B   2. Issuer Name and Ticker or Trading Symbol BARRETT BUSINESS SERVICES INC [BBSI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 4724 SW MACADAM AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 03/02/2006 (Street) PORTLAND, OR 97239 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/02/2006   M   1,500 A $ 8.33 1,516,130 D   Common Stock 03/02/2006   M   1,500 A $ 5.17 1,517,630 D   Common Stock 03/02/2006   M   1,500 A $ 3.79 1,519,130 D   Common Stock 03/02/2006   M   1,500 A $ 2.44 1,520,630 D   Common Stock 03/02/2006   M   1,125 A $ 2.58 1,521,755 D   Common Stock 03/02/2006   M   750 A $ 2.05 1,522,505 D   Common Stock 03/02/2006   M   937 A $ 8.82 1,523,442 D   Common Stock 03/02/2006   M   3,750 A $ 15.195 1,527,192 D   Common Stock 03/02/2006   S   67,200 D $ 24.11 1,459,992 D   Common Stock 03/02/2006   S   336 D $ 24.12 1,459,656 D   Common Stock 03/02/2006   S   664 D $ 24.15 1,458,992 D   Common Stock 03/02/2006   S   400 D $ 24.16 1,458,592 (1) D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Underlying Securities (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non-Employee Director Stock Option (Right to Buy)	$ 8.33	03/02/2006		M			1,500	05/13/1999(2)	(3)	Common Stock	1,500	$ 0	0	D
Non-Employee Director Stock Option (Right to Buy)	$ 5.17	03/02/2006		M			1,500	05/12/2000(2)	(3)	Common Stock	1,500	$ 0	0	D
Non-Employee Director Stock Option (Right to Buy)	$ 3.79	03/02/2006		M			1,500	05/16/2001(2)	(3)	Common Stock	1,500	$ 0	0	D
Non-Employee Director Stock Option (Right to Buy)	$ 2.44	03/02/2006		M			1,500	05/17/2002(2)	(3)	Common Stock	1,500	$ 0	0	D
Non-Employee Director Stock Option (Right to Buy)	$ 2.58	03/02/2006		M			1,125	05/15/2003(2)	(3)	Common Stock	1,125	$ 0	375	D
Non-Employee Director Stock Option (Right to Buy)	$ 2.05	03/02/2006		M			750	05/14/2004(2)	(3)	Common Stock	750	$ 0	750	D
Non-Employee Director Stock Option (Right to Buy)	$ 8.82	03/02/2006		M			937	05/12/2005(2)	(3)	Common Stock	937	$ 0	2,813	D
Non-Employee Director Stock Option (Right to Buy)	$ 15.195	03/02/2006		M			3,750	07/01/2005	07/01/2015	Common Stock	3,750	$ 0	0	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SHERERTZ NANCY B 4724 SW MACADAM AVENUE PORTLAND, OR 97239		X

Signatures

James D. Miller, as attorney-in-fact		03/06/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Reporting person also has indirect beneficial ownership of 5,895 shares held by her children, which she disclaims.
(2)	Exercisable in four equal annual installments beginning on the date shown, with the vesting of all options remaining unvested as of December 30, 2005, accelerated to be fully exercisable as of that date.
(3)	Expires three months following the date on which holder ceases to be a director other than by reason of death, disability, or retirement; if by reason of death or disability, one year thereafter; and if by reason of retirement, five years thereafter.

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