<PAGE>   1
 
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 26, 1998.
 
                            SCHEDULE 14A INFORMATION
 
          PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES
                              EXCHANGE ACT OF 1934
 
Filed by the Registrant [ ]
 
Filed by a Party other than the Registrant [X] 
                                      
Check the appropriate box:
 

<TABLE>
<S>                                          <C>
[ ]  Preliminary Proxy Statement                [ ]  Confidential, for Use of the Commission
                                                Only (as permitted by Rule 14A-6(e)(2))
[ ]  Definitive Proxy Statement
[X]  Definitive Additional Materials
[ ]  Soliciting Material Pursuant to Section 240.14a-11(c) or Section 240.14a-12
</TABLE>

 
                     AMERICAN BANKERS INSURANCE GROUP, INC.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified in its Charter)

                      AMERICAN INTERNATIONAL GROUP, INC.
- --------------------------------------------------------------------------------
  (Name of Person(s) Filing Proxy Statement if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):
 
 [X]  No Fee required.
 
 [ ]  Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11:
 
     (1)  Title of each class of securities to which transaction applies:
 
     (2)  Aggregate number of securities to which the transaction applies:
 
     (3)  Per unit price or other underlying value of transaction computed
          pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the
          filing fee is calculated and state how it was determined):
 
     (4)  Proposed maximum aggregate value of transaction:
 
     (5)  Total fee paid:
 
[ ]  Fee paid previously with preliminary materials.
 
[ ]  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2) and identify the filing for which the offsetting fee was paid
     previously. Identify the previous filing by registration statement number,
     or the Form or Schedule and the date of its filing.
 
     (1)  Amount Previously Paid:
 
        ------------------------------------------------------------------------
 
     (2)  Form, Schedule or Registration Statement No.:
 
        ------------------------------------------------------------------------
 
     (3)  Filing Party:
 
        ------------------------------------------------------------------------
 
     (4)  Date Filed:
 
        ------------------------------------------------------------------------

<PAGE>   2
On February 25, 1998, the Office of Administrative Hearings for the State of
Arizona, issued an order denying Cendant Corporation's ("Cendant") and Season
Acquisition Corporation's ("Season") petition (the "Petition") to defer the
hearing with respect to American International Group, Inc.'s ("AIG") Arizona
Form A filing, to intervene as a party in AIG's hearing, to consolidate AIG's
hearing with consideration of Cendant's and Season's Arizona Form A filing, and
to have oral argument on the Petition; the order permitted Cendant and Season
to participate in AIG's hearing as affected persons in accordance with A.R.S.
Section 20-481.07. 
        

<PAGE>   3
                    IN THE OFFICE OF ADMINISTRATIVE HEARINGS

IN THE MATTER OF THE ACQUISITION OF               NO. 98A-017-INS
CONTROL OF:
                                                  ORDER DENYING PETITION
AMERICAN RELIABLE                                 TO DEFER HEARING, INTERVENE
INSURANCE COMPANY                                 AND CONSOLIDATION; GRANTING
NAIC NO. 19615 AND                                CENDANT CORPORATION AND
                                                  SEASON ACQUISITION CORP.
CONDEAUX LIFE INSURANCE                           LEAVE TO PARTICIPATE AT
COMPANY                                           HEARING
NAIC NO. 94625,

     INSURERS,

BY

AMERICAN INTERNATIONAL
GROUP, INC.,

     PETITIONER.


     On February 12, 1998, the Office of Administrative Hearings received a
Petition to Defer Hearing and to Intervene and Consolidate with Related
Proceeding (the "Petition") which was originally submitted to the Arizona
Department of Insurance (the "Department") by Cendant Corp. and Season
Acquisition Corp. ("Petitioners"). On February 20, 1998, the Department and
American International Group, Inc. ("AIG") filed responses to the Petition
wherein objections were made to the Petition but not to Petitioners'
participation in the hearing. Petitioners filed a Reply with the Office of
Administrative Hearings on February 24, 1998. Petitioners request oral argument
on the Petition.

     Petitioner seeks to have AIG's Form A filing considered at a hearing along
Petitioner's Form A filing. However, Petitioner's Form A filing is still under
review by the Department and that matter has not been set for hearing before
the Office of Administrative Hearings. Therefore, until the matter has been set
for hearing before the

                                               Office of Administrative Hearings
                                                1700 West Washington, Suite 602
                                                    Phoenix, Arizona 85007
                                                        (602) 542-9828

<PAGE>   4
Office of Administrative Hearings, there is no matter before the Office of
Administrative Hearings which can be consolidated with the instant matter.

     Pursuant to A.R.S. Section 20-481.07(B), "[a]ny other person whose
interests may be affected thereby shall have the right to present evidence,
examine and cross-examine the witnesses and offer oral and written arguments at
the hearing...." Petitioners do not cite any statutory authority under the
insurance laws by which their status as an affected person is raised to the
status of being a "party" at this proceeding. The Administrative Law Judge is
not persuaded by the arguments presented by Petitioner that because their
rights are affected, Petitioners fall within the definition of being a "party"
within the meaning of A.R.S. Section 41-1001(13) and A.A.C. R20-6-101(b)(5).
Therefore, it is determined that Petitioners are not parties to this proceeding
but do have the right to participate at the hearing in accordance with A.R.S.
Section 20-481.07.

     Because Petitioners are not parties to this proceeding but merely allowed
to participate, Petitioners do not have standing to request a continuance,
consolidation or deferral of this matter; nor does the Office of Administrative
Hearings have jurisdiction over the "related matter" referred to by Petitioners
as Petitioners do not have any matters presently before the Office of
Administrative Hearings.

     Based on the above, IT IS ORDERED denying the Petition to Defer Hearing
and to Intervene and to Consolidate with Related Proceeding and denying oral
argument on the Petition;

     IT IS FURTHER ORDERED that Petitioners may participate in the hearing as
affected persons pursuant to A.R.S. Section 20-481.07.

     Done this day, February 25, 1998.

                                        /s/ Lewis D. Kowal
                                        --------------------------------
                                        Lewis D. Kowal
                                        Administrative Law Judge

Copy faxed this 25 day of
February, 1998, to:

Mr. John A. Greene, Director
Department of Insurance
2910 North 44th Street, #210
ATTN: Curvey Burton
Phoenix, AZ 85018-7256
Fax #912-8452

                                       2

<PAGE>   5
Low & Childers, P.C.
Steven R. Henry, Esq.
2999 N. 44th St., Ste. 250
Phoenix, AZ 85018
Fax #808-8835

Attorney at Law
Philip T. Paris, Esq.
2929 N. 44th Street, Ste. 120
Phoenix, AZ 85018
Fax #840-2771

Lewis & Roca, L.L.P.
Jeremy E. Butler, Esq.
40 N. Central Avenue
Phoenix, Arizona 85004-4429
Fax #262-5747

Brown & Bain, P.A.
Howard Ross Cabot, Esq.
2901 N. Central Avenue
P.O. Box 400
Phoenix, Arizona 85001-0400
Fax #351-8516

Joseph M. Hennelly, Jr.
2264 E. Desert Cove Avenue
Phoenix, Arizona 85028
Fax #971-9442

Office of the Attorney General
Michael J. De La Cruz
1275 W. Washington
Phoenix, AZ 85007
Fax #542-4377



By /s/ Cruz A. Serrano
   -------------------


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