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EXHIBIT 10.12

SECOND AMENDMENT TO EMPLOYMENT AGREEMENT

        This Second Amendment to Employment Agreement (this "Second Amendment"),
effective as of January 1, 2003, is between Liberty Media Corporation, a
Delaware corporation (the "Company"), and John C. Malone ("Executive").

RECITALS

        Tele-Communications, Inc. ("TCI") and Executive executed an Employment
Agreement ("Original Agreement") dated as of November 1, 1992. As of March 9,
1999, (i) the Company assumed the Original Agreement and (ii) the Company and
the Executive executed an amendment (the Original Agreement, as amended is
referred to as, the "Employment Agreement"). A copy of the Employment Agreement
is attached as Exhibit A to this Second Amendment

        The Company and Executive desire to amend the Employment Agreement as
follows:

AGREEMENT

        In consideration of the mutual covenants set forth in this Second
Amendment and the Employment Agreement and Amendment, the parties, intending to
be legally bound, agree as follows:

        1.     Definitions. As used in this Second Amendment, all terms with
initial capital letters that are not defined in this Second Amendment will have
the meaning ascribed to them in the Employment Agreement.

        2.     Executive Benefit Plans; Use of Company Aircraft; Professional
Services. Sections 7 (b) and (c) of the Employment Agreement are hereby deleted
in their entirety and replaced with the following:

        (b)   While he is employed by the Company pursuant to this Agreement,
Executive will be permitted by the Company to make use of the Company's aircraft
and flight crew from time to time for personal trips (each an "Executive
Flight"), subject to the conditions hereafter set forth and the limits set forth
in Section 7(c) below. The Company will bear the expense of each Executive
Flight permitted hereby and the Value of each Executive Flight shall be treated
as additional compensation to Executive. For purposes of the foregoing, the
Value of each Executive Flight shall be determined in accordance with Treasury
Regulation Section 1.61-21(g) (or any successor regulation promulgated under the
Internal Revenue Code of 1986, as amended) as from time to time in effect.
Executive will give the Company reasonable notice of any desired Executive
Flight, stating the proposed schedule, the points of origination and destination
of

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the flight and, if so required by the Company, such information about the
general purpose of the Executive Flight as shall be sufficient for the Company
to determine that such flight does not violate any requirement of applicable
law. The Company will promptly thereafter inform Executive of the availability
of the aircraft and its flight crew. The Company shall have no obligation to
provide the aircraft and flight crew for any Executive Flight at any time when
(i) a requested Executive Flight would conflict with any actual or planned use
of the aircraft by the Company, (ii) the aircraft is undergoing any scheduled
maintenance or repairs or is otherwise not in a condition to be operated, or
(iii) a qualified flight crew is unavailable to operate the aircraft for a
requested Executive Flight. In addition, the Company will have no obligation
hereunder to make the aircraft and its flight crew available for any use or
purpose, and Executive agrees not to use the same for any use or purpose, which,
in the opinion of the Company, is in violation of or not permitted by applicable
law as applied to either the Company or Executive, or is not permitted under or
stipulated in the insurance policies maintained by the Company. The proposed
schedule and points of origination and destination of each Executive Flight will
be subject to the approval of the captain of the flight crew, who shall at all
times be in charge and control of the aircraft, and in no event shall the
aircraft be operated beyond the geographical limits prescribed in the insurance
policies maintained by the Company.

        (c)   The Company will pay, or will reimburse Executive for, all fees
and other costs incurred by Executive in obtaining professional advice or for
any other purpose ("Qualified Expenses") provided that the Value of all
Executive Flights and the amount of Qualified Expenses paid or reimbursed by the
Company will not exceed, in the aggregate, $500,000 per year.

        3.     Notices. The address for notices to Executive set forth in
Section 14 of the Employment Agreement is amended to read as follows:

 
   
    Mr. John C. Malone
 
 
                                                 
 
 
                                                 

        4.     Miscellaneous. Except as provided herein, the Employment
Agreement shall continue in full force and effect.

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        This Second Amendment was approved by the Company's Board of Directors
on May 13, 2003, but will be effective as of the date first written above.

    LIBERTY MEDIA CORPORATION
 
 
By:
 
 

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Charles Y. Tanabe, Senior Vice President
 
 

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John C. Malone

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EXHIBIT 10.12

SECOND AMENDMENT TO EMPLOYMENT AGREEMENT
RECITALS
AGREEMENT