SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                   FORM 8-A/A

                         POST-EFFECTIVE AMENDMENT NO. 3

                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES

                     PURSUANT TO SECTION 12(B) OR (G) OF THE

                         SECURITIES EXCHANGE ACT OF 1934

                                 MIM CORPORATION
--------------------------------------------------------------------------------
             (Exact Name of Registrant as Specified in Its Charter)

               DELAWARE                                     05-0489664
          (State of Incorporation                      (I.R.S. Employer
        Incorporation or Organization)                 Identification No.)

           100 CLEARBROOK ROAD                                 10523
              ELMSFORD, NEW YORK                            (Zip Code)
   (Address of principal executive offices)

If this Form relates to the  registration  of a class of securities  pursuant to
Section  12(b)  of  the  Exchange  Act  and is  effective  pursuant  to  General
Instruction A.(c), please check the following box |_|

If this Form relates to the  registration  of a class of securities  pursuant to
Section  12(g)  of  the  Exchange  Act  and is  effective  pursuant  to  General
Instruction A.(d), please check the following box |X|

Securities Act registration statement file number to which this Form relates:

                                                                       None

Securities to be registered pursuant to Section 12(b) of the Act:      None

         Title of Each Class        Name of each exchange on
         to be so Registered        which each class is to be registered
         -------------------        ------------------------------------

         None

Securities to be registered pursuant to Section 12(g) of the Act:

          Series A Junior Participating Preferred Stock Purchase Rights

                                (Title of Class)






                 INFORMATION REQUIRED IN REGISTRATION STATEMENT

         By resolution adopted on November 26, 2002, the Board of Directors (the
"Board") of MIM  Corporation  (the  "Company")  amended and  restated the Rights
Agreement,  dated as of November 24,  1998,  as amended on December 14, 1998 and
May 20, 1999, between the Company and American Stock Transfer and Trust Company,
as Rights Agent.

         The  amendment  and  restatement  of the  Rights  Agreement  was not in
response to any action by a third party.  Rather,  the Board  amended the Rights
Agreement  to bring it up to date with the  current  needs of the Company and to
ensure that all the Company's stockholders are treated fairly in the event of an
unsolicited takeover of the Company or other tactics intended to gain control of
the  Company  without  maximizing  stockholder  value.  The  amendments  to  the
Company's  Rights  Agreement  were  made  after a routine  review of the  Rights
Agreement  which is performed by the Company from time to time and include:  (i)
removal  of the  "Permitted  Offer"  feature;  (ii)  removal  of  references  to
"Continuing  Director"  approvals;  (iii) removal of the "40% Person" test;  and
(iv)  extension of the  expiration  date from  November 24, 2008 to November 24,
2012.

         In accordance  with the Board's  resolution,  on December 3, 2002,  the
Company and the Rights  Agent  executed  and  delivered  an Amended and Restated
Rights Agreement (the "Amended and Restated Rights  Agreement"),  which is filed
as Exhibit 4.1 to this Post-Effective Amendment No. 3 on Form 8-A/A.

         On December 4, 1998, the Company filed a Registration Statement on Form
8-A (as amended on December 14, 1998 by  Post-Effective  Amendment No. 1 on Form
8-A/A  thereto and on May 20,  1999 by  Post-Effective  Amendment  No. 2 on Form
8-A/A  thereto,  the  "Registration  Statement") to register the Series A Junior
Participating   Preferred  Stock  Purchase  Rights  issuable  under  the  Rights
Agreement  under the  Securities  Exchange Act of 1934.  The  description of the
Rights  contained in Item 1 of the  Registration  Statement is hereby deleted in
its entirety and replaced with the description of the Rights set forth in Item 1
to this  Post-Effective  Amendment No. 3 to the  Registration  Statement on Form
8-A/A. The Amended and Restated Rights  Agreement  (including the form of Rights
Certificate  and  Certificate  of  Designations  of Preferred  Stock as exhibits
thereto)  is  attached  hereto  as  Exhibit  4.1 and is  incorporated  herein by
reference in its entirety.

ITEM 1. DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.

         On  November  24,  1998,  the  Board  originally  declared  a  dividend
distribution  of one  right  (a  "Right")  for  each  outstanding  share  of the
Company's common stock, par value $.0001 per share ("Company Common Stock"),  to
stockholders of record at the close of business on December 4, 1998 (the "Record
Date") and for each share of  Company  Common  Stock  issued  (including  shares
distributed  from the  Company's  treasury)  by the  Company  from and after the
Record Date up to, but not including,  the Distribution Date (as defined below).
The description and terms of the Rights are set forth in an Amended and Restated
Rights Agreement, dated as of December 3, 2002 (the "Amended and Restated Rights
Agreement"), between the Company and American Stock Transfer & Trust Company, as
Rights Agent.  The Amended and Restated Rights Agreement amends and restates the
original Rights Agreement, dated as of November 24, 1998, as amended on December
14, 1998 and May 20, 1999 (the "Original Rights Agreement").

         Each Right entitles the registered holder,  subject to the terms of the
Amended  and  Restated  Rights  Agreement,  to  purchase  from the  Company  one
one-thousandth of a share (a "Unit") of Series A Junior Participating  Preferred
Stock,  par value $.0001 per share  ("Preferred  Stock"),  of the Company,  at a
purchase price of $20.00 per share, in cash (the "Purchase  Price"),  subject to
adjustment  as  more  fully  set  forth  below.   In  general,   each  Unit  has
substantially  the same  economic  attributes  and voting rights as one share of
Company Common Stock.

         The following summary description of the Rights and the Preferred Stock
does not purport to be complete and is qualified in its entirety by reference to
all the terms and  provisions  of the Amended and Restated  Rights  Agreement as
well as to the  Certificate  of  Designations  of Series A Junior  Participating
Preferred Stock filed with the Delaware  Secretary of State on December 4, 1998,
including the definitions therein of certain terms.

DESCRIPTION OF THE RIGHTS

         Initially,  the Rights  will  attach to all  certificates  representing
shares of outstanding  Company Common Stock, and no separate Rights certificates
will be distributed;  the Rights will not be separately  traded. The Rights will
separate  from  the  Company  Common  Stock  and  Rights  certificates  will  be
separately  distributed  (the  "Distribution  Date")  and  the  Rights  will  be
separately  traded upon the earliest to occur of (i) ten (10) business days (or,
subject to certain  limitations,  such later date as may be determined by action
of the Board prior to such time)  following a public  announcement  (the date of
such announcement being the "Stock Acquisition Date") that (a) a person or group
of  affiliated  or  associated  persons (an  "Acquiring  Person") has  acquired,
obtained the right to acquire, or otherwise obtained beneficial ownership of 15%
or more of the then outstanding  shares of Company Common Stock or (b) the Board
has, in  accordance  with the  criteria  set forth in the  Amended and  Restated
Rights  Agreement,  declared a person who beneficially  owns at least 10% of the
then outstanding  shares of Company Common Stock to be an "Adverse Person," (ii)
ten (10) business days (or, subject to certain  limitations,  such later date as
may be  determined  by action of the Board  prior to such  time)  following  the
commencement  of a tender offer or exchange  offer that would result in a person
or group  beneficially  owning  15% or more of the then  outstanding  shares  of
Company Common Stock and (iii) the  occurrence of a Flip-Over  Event (as defined
below).  Until the Distribution Date, (i) the Rights will be evidenced solely by
Company Common Stock  certificates  and will be  transferred  with and only with
such  Company  Common  Stock   certificates,   (ii)  new  Company  Common  Stock
certificates issued after the Record Date (including shares distributed from the
Company's  treasury)  will  contain a notation  incorporating  the  Amended  and
Restated  Rights  Agreement by reference and (iii) the surrender for transfer of
any Company Common Stock  certificates  will also constitute the transfer of the
Rights associated with the Company Common Stock evidenced by such certificates.

         The Rights are not  exercisable  until the  Distribution  Date and will
expire at the close of  business  on November  24,  2012,  unless the Rights are
earlier redeemed or exchanged by the Company as described below.

         As  soon  as  practicable   after  the  Distribution   Date,   separate
Certificates  evidencing the Rights  ("Rights  Certificates")  will be mailed to
holders of record of Company  Common  Stock as of the close of  business  on the
Distribution Date and,  thereafter,  the separate Rights Certificates alone will
represent the Rights.

         In the event (a "Flip-In Event") that (i) a person becomes an Acquiring
Person (other than  pursuant to a Flip-Over  Event),  (ii) the Board  declares a
person to be an Adverse Person,  (iii) the Company is the surviving  corporation
in a merger with an  Acquiring  Person in which  shares of Company  Common Stock
shall remain outstanding,  (iv) an Acquiring Person or an Adverse Person engages
in one or more "self-dealing" transactions specified in the Amended and Restated
Rights Agreement, or (v) during such time that an Acquiring Person or an Adverse
Person  exists,  an event occurs  which  results in such  Acquiring  Person's or
Adverse  Person's  ownership  interest being increased by more than 1% (e.g., by
means of a reverse  stock split or  recapitalization),  then, in each such case,
each holder of a Right will thereafter have the right to receive, upon exercise,
Units (or, in certain  circumstances,  cash, property or other securities of the
Company) having a value equal to two times the exercise price of the Right.  The
exercise price is the Purchase Price  multiplied by the number of Units issuable
upon  exercise  of a Right  prior  to the  Flip-In  Event.  Notwithstanding  the
foregoing, following the occurrence of any Flip-In Event all Rights that are, or
(under  certain  circumstances  specified  in the  Amended and  Restated  Rights
Agreement)  were,  beneficially  owned by any Acquiring Person or Adverse Person
(or by certain related parties) will be null and void.

         In the event (a  "Flip-Over  Event")  that,  at any time  following the
Stock  Acquisition  Date,  (i) the  Company  is  acquired  in a merger  or other
business   combination   transaction  and  the  Company  is  not  the  surviving
corporation,  (ii) any person consolidates or merges with the Company and all or
part of the Company Common Stock is converted or exchanged for securities,  cash
or property of any other Person, or (iii) 50% or more of the Company's assets or
earning power is sold or transferred,  then, in each such case, each holder of a
Right (except Rights which previously have been voided as described above) shall
be entitled to receive,  upon exercise,  common stock of the Acquiring Person or
Adverse  Person  having a value  equal to two  times the  exercise  price of the
Right.

         The Purchase  Price  payable,  and the number of Units  issuable,  upon
exercise  of the Rights are subject to  adjustment  from time to time to prevent
economic and voting rights  dilution (i) in the event of a stock dividend on, or
a  subdivision,  combination or  reclassification  of, the Company Common Stock,
(ii) if  holders of the  Company  Common  Stock are  granted  certain  rights or
warrants to subscribe for Company Common Stock or convertible securities at less
than the current  market price of the Company  Common  Stock,  or (iii) upon the
dividend or distribution, as the case may be, of evidences of indebtedness, cash
or assets (excluding regular quarterly cash dividends) or of subscription rights
or warrants  (other than those  referred to above) to the holders of the Company
Common Stock.

         With certain  exceptions,  no adjustment in the Purchase  Price will be
required  until  cumulative  adjustments  amount to at least 1% of the  Purchase
Price. The Company is not required to issue  fractional  Units. In lieu thereof,
an  adjustment  in cash may be made  based on the  market  price of the  Company
Common Stock prior to the date of exercise.

         At any time prior to the Distribution  Date, the Company,  by action of
the Board, may redeem the Rights in whole, but not in part, at a price of $.0001
per Right (the  "Redemption  Price"),  subject to adjustment in certain  events,
payable,  at the election of the Board, in cash,  shares of Company Common Stock
or such other form of consideration as the Board may determine. Immediately upon



effectiveness  of the action of the Board ordering the redemption of the Rights,
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price. The ten-day period of redemption between the Stock
Acquisition Date and the Distribution  Date may be extended by the Board so long
as the Rights are then redeemable.

         At any time prior to the  Distribution  Date,  the Company may exchange
the Rights (other than Rights owned by an Acquiring Person or an Adverse Person,
or an affiliate or an  associate  of an Acquiring  Person or an Adverse  Person,
which  will have  become  null and  void),  in whole or in part,  for  shares of
Company Common Stock at an exchange ratio  determined as provided in the Amended
and Restated Rights Agreement.

         Until a Right is exercised, the holder thereof will have no rights as a
stockholder  of the  Company  with  respect to such  Right,  including,  without
limitation,  the right to vote or to receive dividends.  Following exercise of a
Right,  the  holder's  rights will be  determined  by the type of  consideration
received upon the exercise.  Although the  distribution of the Rights should not
be taxable to stockholders or to the Company,  stockholders may,  depending upon
the circumstances,  recognize taxable income in the event that the Rights become
exercisable for Units (or other  consideration)  or are exchanged as provided in
the preceding paragraph.

         The  provisions  of the Amended and Restated  Rights  Agreement  may be
amended  without the approval of the holders of Company Common Stock at any time
prior to the Distribution  Date. After the Distribution  Date, the provisions of
the Amended and Restated  Rights  Agreement  may be amended in order to (i) cure
any ambiguity, defect or inconsistency, (ii) make changes which do not adversely
affect the  interests  of  holders of Rights  (excluding  the  interests  of any
Acquiring  Person or Adverse  Person),  or (iii)  shorten or  lengthen  any time
period under the Amended and Restated Rights Agreement;  provided, however, that
no amendment to adjust the time period  governing  redemption  may be made after
the Rights are no longer redeemable.

         A copy of the  Amended and  Restated  Rights  Agreement  is attached as
Exhibit 4.1 to this Post-Effective  Amendment No. 3 on Form 8-A/A. A copy of the
Amended and Restated Rights  Agreement also is available free of charge from the
Company,  100 Clearbrook  Road,  Elmsford,  New York 10523,  Attention:  General
Counsel.  This summary description of the Rights does not purport to be complete
and is qualified in its entirety by reference to the Rights Agreement,  which is
incorporated herein by reference.

ITEM 2. EXHIBITS.

     4.1  Amended and Restated Rights  Agreement,  dated as of December 3, 2002,
          between MIM Corporation and American Stock Transfer and Trust Company,
          as  Rights  Agent  (including  the  form  of  rights  certificate  and
          certificate of designation).

     4.2  Letter to  Stockholders  of MIM  Corporation,  dated as of December 4,
          2002.






                                    SIGNATURE

         Pursuant to the  requirements of Section 12 of the Securities  Exchange
Act of 1934, the Registrant has duly caused this Post-Effective  Amendment No. 3
to the  registration  statement  to be signed on its behalf by the  undersigned,
thereto duly authorized.

                                      MIM Corporation

                                      By:      /s/ Barry A. Posner
                                               --------------------------------
                                               Name:  Barry A. Posner
                                               Title: Executive Vice President


Date:  December 4, 2002






                                INDEX TO EXHIBITS



Exhibit Number       Description of Exhibits
--------------       -----------------------

     4.1            Amended and Restated Rights Agreement,  dated as of December
                    3, 2002, between MIM Corporation and American Stock Transfer
                    and Trust  Company,  as Rights Agent  (including the form of
                    rights certificate and certificate of designations).

     4.2            Letter  to  Stockholders  of MIM  Corporation,  dated  as of
                    December 4, 2002.