LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS


     The undersigned hereby constitutes and appoints each of John M. Donnan,
Cherrie I. Tsai, Troy B. Lewis and Tatjana Paterno, or any of them, signing
singly, the undersigned's true and lawful attorney-in-fact to:
     1.	to the extent the undersigned does not have the access codes necessary
to file on EDGAR, execute for and on behalf of the undersigned a Form ID and any
other form required to be filed or submitted in accordance with Regulation S-T
promulgated by the United States Securities and Exchange Commission (the
"Commission") in order to obtain such codes; and
     2.	execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of Kaiser Aluminum Corporation (the
"Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the	rules thereunder;
     3.	do and perform any and all acts for and on behalf of the undersigned
that may be necessary or desirable to complete and execute any such Form ID or
Form 3, 4 or 5 and timely file any such form or forms with the Commission and
any stock exchange or similar authority; and
     4.	take any other action of any type whatsoever in connection with the
foregoing that, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this power of attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's sole discretion.
     The undersigned hereby grants to each such attorney-in-fact and any of them
full power and authority to do and perform any and every act and thing
whatsoever, necessary or desirable 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 might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that any such
attorney-in-fact, or any such attorney-in-fact's substitute or substitutes,
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 none of
the foregoing attorneys-in-fact, in serving in such capacity at the request of
the undersigned, are assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.
     The execution by the undersigned of this power of attorney hereby expressly
revokes and terminates any powers of attorney previously granted by the
undersigned with respect to a Form ID or Forms 3, 4 and 5 involving Company
securities.  This power of attorney shall remain in full force and effect until
the undersigned is no longer required to file a Form ID or 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 the 12th day of December, 2007.

                                   /s/  James E. McAuliffe
                                   Name:  James E. McAuliffe