Exhibit 24



POWER OF ATTORNEY



Know all by these present, that the undersigned hereby

constitutes and appoints each of James D. Miller, Gregory R. Vaughn, and Brooks

DiStefano signing singly, the undersigned's true and lawful attorney-in-fact to:



1. Execute for and on behalf of the undersigned, in the

undersigned's capacity as an officer and/or director of Barrett Business

Services, Inc. (the "Company"), Forms 3, 4, and 5 in accordance with Section

16(a) of the Securities Exchange Act of 1934 and the rules thereunder, and any

other forms or reports the undersigned may be required to file in connection

with the undersigned's ownership, acquisition, or disposition of securities of

the Company; and



2. Do and perform any and all acts for and on behalf of the

undersigned which may be necessary or desirable to complete and execute any

such Form 3, 4, or 5, or other form or report, and timely file such form or

report with the United States Securities and Exchange Commission and any stock

exchange or similar authority as appropriate.



The undersigned hereby grants to each such attorney-in-fact

full power and authority to do and perform any and every act and thing

necessary or proper to be done in the exercise of any of the rights and powers

herein granted, as fully to all intents and purposes as the undersigned could

do if personally present, hereby ratifying and confirming all that such

attorney-in-fact shall lawfully do or cause to be done by virtue of this power

of attorney and the rights and powers herein granted. The undersigned

acknowledges that the foregoing attorneys-in-fact, in serving in such capacity

at the request of the undersigned, are not assuming, and the Company is not

assuming, any of the undersigned's responsibilities to comply with Section 16

of the Securities Exchange Act of 1934.



This Power of Attorney shall remain in full force and

effect until the undersigned is no longer required to file Forms 3, 4, and 5

with respect to the undersigned's holdings of and transactions in securities

issued by the Company, unless earlier revoked by the undersigned in a signed

writing delivered to the foregoing attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Power

of Attorney to be executed as of this 13th day of May, 2009.







/s/ James D. Miller

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Signature



James D. Miller

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