SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                   SCHEDULE TO

            Tender Offer Statement Under Section 14(d)(1) Or 13(e)(1)
                     of The Securities Exchange Act of 1934

                                 AMENDMENT NO. 1

                 OLD MUTUAL ABSOLUTE RETURN MASTER FUND, L.L.C.
                                (Name of Issuer)

                 OLD MUTUAL ABSOLUTE RETURN MASTER FUND, L.L.C.
                      (Name of Person(s) Filing Statement)

                       LIMITED LIABILITY COMPANY INTERESTS
                         (Title of Class of Securities)


                                       N/A
                      (CUSIP Number of Class of Securities)

                                  Ross Weissman
                             Larch Lane Advisors LLC
                          800 Westchester Avenue, S-618
                               Rye Brook, NY 10573
                                 (888) 266-2200

(Name, Address and Telephone Number of Person Authorized to Receive Notices and
          Communications on Behalf of the Person(s) Filing Statement)

                                 With a copy to:
                               George Silfen, Esq.
                            Schulte Roth & Zabel LLP
                                919 Third Avenue
                            New York, New York 10022
                                 (212) 756-2131

                               September 29, 2008
                       (Date Tender Offer First Published,
                       Sent or Given to Security Holders)




                            CALCULATION OF FILING FEE

- --------------------------------------------------------------------------------
Transaction Valuation:     $4,400,000.00(a)     Amount of Filing Fee: $172.92(b)
- --------------------------------------------------------------------------------

(a)     Calculated as the aggregate maximum purchase price for Interests.

(b)     Calculated at $39.30 per $1,000,000 of Transaction Valuation.

[X]     Check the box if any part of the fee is offset as provided by Rule
        0-11(a)(2) and identify the filing with which the offsetting fee was
        previously paid. Identify the previous filing by registration statement
        number, or the Form or Schedule and the date of its filing.

        Amount Previously Paid:  $113.97
        Form or Registration No.:  Schedule TO, Registration No. 005-83155
        Filing Party:  Old Mutual Absolute Return Master Fund, L.L.C.
        Date Filed: September 29, 2008

[ ]     Check the box if the filing relates solely to preliminary communications
        made before the commencement of a tender offer.

Check the appropriate boxes below to designate any transactions to which the
statement relates:

[ ]     third-party tender offer subject to Rule 14d-1.

[X]     issuer tender offer subject to Rule 13e-4.

[ ]     going-private transaction subject to Rule 13e-3.

[ ]     amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the results
of the tender offer: [ ]



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        This  Amendment  No. 1 relates to the Issuer  Tender Offer  Statement on
Schedule TO (the  "Statement")  originally  filed on  September  29, 2008 by Old
Mutual  Absolute Return Master Fund,  L.L.C.  (the "Fund") in connection with an
offer (the "Offer") by the Fund to purchase up to $2,900,000 of interests in the
Fund  ("Interests")  on the terms and subject to the conditions set forth in the
Notice of Offer to Purchase and the related Letter of Transmittal. Copies of the
Notice of Offer to Purchase and Letter of Transmittal  were previously  filed as
Exhibits B and C to the Statement.

        This  Amendment  No. 1 to the  Statement  is being  filed to report  the
following  information  pursuant  to Rule  13e-4(c)(3)  (capitalized  terms  not
otherwise  defined herein shall have the meanings ascribed to them in the Notice
of Offer to Purchase):

        The Offer amount is being  increased to an  aggregate of  $4,400,000  of
Interests, on the same terms and subject to the same conditions set forth in the
Notice of Offer to Purchase and the related Letter of  Transmittal,  except that
the expiration date of the Offer is extended until 12:00 midnight, Eastern Time,
on Monday, November 3, 2008, in accordance with Rule 13e-4(f)(1)(ii).

        The  information  contained  in the  Supplement  to  Notice  of Offer to
Purchase  dated  October  21,  2008,  attached  as  Appendix  A hereto,  will be
distributed to investors in the Fund  contemporaneously  with the filing of this
Amendment.



                                    SIGNATURE


        After due 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.

                                         OLD MUTUAL ABSOLUTE RETURN
                                         MASTER FUND, L.L.C.



                                         By: /s/ ROSS WEISSMAN
                                             -----------------
                                             Name: Ross Weissman
                                             Chief Financial Officer


October 21, 2008



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                                                                      Appendix A

                 OLD MUTUAL ABSOLUTE RETURN MASTER FUND, L.L.C.
                          800 WESTCHESTER AVENUE, S-618
                            RYE BROOK, NEW YORK 10573

                    SUPPLEMENT TO NOTICE OF OFFER TO PURCHASE
                             DATED OCTOBER 21, 2008

To the Members of Old Mutual Absolute Return Master Fund, L.L.C.:

        As  previously  disclosed  in the  Notice  of  Offer to  Purchase  dated
September 29, 2008 (the "Offer"), Old Mutual Absolute Return Master Fund, L.L.C.
(the "Fund") may, in its discretion, extend the Offer and increase the amount of
interests in the Fund ("Interests")  that the Fund is offering to purchase.  The
Fund has decided to extend the Offer until 12:00 midnight on Monday, November 3,
2008,  and to increase the amount of Interests  the Fund is offering to purchase
from $2.9 million to an aggregate of $4.4 million. All of the other terms of the
original Offer remain unchanged.

Sincerely,

Old Mutual Absolute Return Master Fund, L.L.C.



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