Registration No. 333-61676


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                           ---------------------------

                         POST-EFFECTIVE AMENDMENT NO. 1
                                       TO
                                    FORM S-8

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                           ---------------------------

                                   AT&T CORP.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

                               New York 13-4924710
      (State or Other Jurisdiction of (I.R.S. Employer Identification No.)
                         Incorporation or Organization)

                            32 Avenue of the Americas
                          New York, New York 10013-2412
               (Address of Principal Executive Offices) (Zip Code)


              AT&T SENIOR MANAGEMENT INCENTIVE AWARD DEFERRAL PLAN

           AT&T DEFERRED COMPENSATION PLAN FOR NON-EMPLOYEE DIRECTORS

                           (Full titles of the plans)
                           --------------------------

                             MARILYN J. WASSER, ESQ.
                       VICE PRESIDENT - LAW AND SECRETARY
                                   AT&T CORP.
                             295 NORTH MAPLE AVENUE
                             BASKING RIDGE, NJ 07920
                     (Name and Address of Agent for Service)

                                 (908) 221-2000
          (Telephone number, including area code, of agent for service)
                           --------------------------

         AT&T Corp.  ("AT&T") has heretofore  filed  Registration  Statement No.
333-61676 which registered  30,000,000  shares of AT&T Common Stock (the "Common
Stock") to be offered under the AT&T Senior Management  Incentive Award Deferral
Plan (the "SMIAD Plan") and the AT&T Deferred Compensation Plan for Non-Employee
Directors (the "Director Plan"), together with deferred compensation obligations
under the SMIAD Plan and the Director  Plan which are unsecured  obligations  of
AT&T Corp. ("AT&T") to pay deferred compensation in the future (i) in accordance
with the terms of the SMIAD Plan for a select  group of Senior  Managers of AT&T
Corp. and (ii) in accordance with the Director Plan for  non-employee  Directors
of AT&T. The SMIAD Plan and the Director Plan are individually  referred to as a
"Plan" and collectively  referred to as the "Plans".  Pursuant to Rule 416(a) of
the Securities Act of 1933, as amended (the "Securities  Act") and in accordance
with the  anti-dilution  provisions  applicable to the Plans, in connection with
AT&T's split-off of AT&T Wireless Services, Inc. ("AWS") and special dividend of
AWS  Common  Stock in July  2001,  the  number  of shares  registered  under the
Registration Statement was increased by a factor of 1.3246 to 39,738,000 shares.
This Amendment  amends the description of deferred  compensation  obligations in
the Item 4(b) of the  Registration  Statement to  incorporate  amendments to the
Plans which were adopted by the Board of Directors of AT&T on March 8, 2002.



PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

     The following  documents  previously  filed by AT&T with the Securities and
Exchange Commission (the "SEC") pursuant to the Securities Exchange Act of 1934,
as  amended  (the  "Exchange  Act")  are  incorporated   into  the  registration
statement, as amended, by reference:

AT&T SEC Filings (File No. 1-1105)                      Period
----------------------------------                      ------
Annual Report on Form 10-K...........     Year ended December 31, 2001, filed on
                                          April 1, 2002

Current Reports on Form 8-K..........     Filed on January 4, 2002,  February 5,
                                          2002 and February 21, 2002

Proxy Statements.....................     Filed on February 11, 2002

       All documents,  filed  subsequent to the date hereof by AT&T with the SEC
pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act and
prior to the filing of a post-effective  amendment to the Registration Statement
which  indicates  that all  securities  offered  hereby  have been sold or which
deregisters  all  securities  then  remaining  unsold,  shall  be  deemed  to be
incorporated  by reference  herein and made a part hereof from their  respective
dates of filing (such  documents,  and the  documents  enumerated  above,  being
hereinafter referred to as "Incorporated  Documents");  PROVIDED,  HOWEVER, that
the  documents  enumerated  above  or  subsequently  filed by AT&T  pursuant  to
Sections  13(a),  13(c),  14 and 15(d) of the  Exchange  Act in each year during
which the offering  made hereby is in effect prior to the filing with the SEC of
AT&T's Annual  Report on Form 10-K covering such year shall not be  Incorporated
Documents or be  incorporated  by reference  herein or be a part hereof from and
after the filing of such Annual Report on Form 10-K.

     Any  statement  contained  in an  Incorporated  Document  or  deemed  to be
incorporated  by reference  herein shall be deemed to be modified or  superseded
for purposes  hereof to the extent that a statement  contained  herein or in any
other  subsequently  filed  Incorporated  Document  modifies or supersedes  such
statement.  Any such  statement so modified or  superseded  shall not be deemed,
except as so modified or superseded, to constitute a part hereof.

Item 4.  Description of Securities.

         The description of the deferred  compensation  obligations contained in
Item  4(b) of the  Registration  Statement  is  hereby  amended  by  adding  the
following paragraph at the end of such description:

         On March 8, 2002 AT&T further amended the Plans to provide that (i) the
special one-time exchange option for a participant to receive a single payout of
90% of the present value of deferred compensation obligations under the Plans in
the form of AT&T Common  Stock would not become  effective  prior to the date on
which AT&T issues written  notification  to the holders of its bonds pursuant to
Section 6.02 of the Indenture dated as of November 21, 2001 between AT&T and The
Bank of New York, as trustee,  and (ii) the basic  exchange  option to receive a
single  payout  of  90% of the  then  current  value  of  deferred  compensation
obligations  under the Plans in the form of AT&T  Common  Stock would not become
effective  until 30 days  after  the  consummation  of the  spin-off  of  AT&T's
broadband business.

Item 5.  Interests of Named Experts and Counsel.

         Not Applicable.

Item 6.  Indemnification of Directors and Officers.

         Pursuant  to the  statutes  of the State of New  York,  a  director  or
officer  of  a  corporation  is  entitled,  under  specified  circumstances,  to
indemnification  by  the  corporation  against  reasonable  expenses,  including
attorney's  fees,  incurred by him/her in connection with the defense of a civil
or criminal  proceeding to which he/she has been made, or threatened to be made,
a party by reason of the fact that  he/she  was such  director  or  officer.  In
certain  circumstances,  indemnity  is  provided  against  judgments,  fines and
amounts paid in settlement.  In general,  indemnification is available where the
director  or  officer  acted in good  faith,  for a  purpose  he/she  reasonably
believed to be in the best interests of the corporation. Specific court approval
is required in some cases.  The  foregoing  statement is subject to the detailed
provisions of Sections 715, 717 and 721-725 of the New York Business Corporation
Law ("BCL").

         The AT&T By-laws  provide that AT&T is authorized,  by (i) a resolution
of shareholders,  (ii) a resolution of directors or (iii) an agreement providing
for such indemnification,  to the fullest extent permitted by applicable law, to
provide indemnification and to advance expenses to its directors and officers in
respect of claims,  actions,  suits or  proceedings  based upon,  arising  from,
relating to or by reason of the fact that any such director or officer serves or
served in such capacity with AT&T or at the request of AT&T in any capacity with
any other enterprise.

         AT&T has  entered  into  contracts  with its  officers  and  directors,
pursuant to the  provisions of BCL Section 721, by which it will be obligated to
indemnify  such persons,  to the fullest  extent  permitted by the BCL,  against
expenses,  fees,  judgments,  fines and amounts paid in settlement in connection
with any present or future  threatened,  pending or  completed  action,  suit or
proceeding  based in any way upon or related to the fact that such person was an
officer or director of AT&T or, at the request of AT&T, an officer,  director or
other partner, agent, employee or trustee of another enterprise. The contractual
indemnification so provided will not extend to any situation where a judgment or
other final  adjudication  adverse to such person  establishes that his/her acts
were  committed  in bad  faith or were  the  result  of  active  and  deliberate
dishonesty  or that  there  inured to such  person a  financial  profit or other
advantage.

         The  directors  and officers of AT&T are covered by insurance  policies
indemnifying against certain liabilities,  including certain liabilities arising
under the Securities Act, which might be incurred by them in such capacities.

Item 7.  Exemption from Registration Claimed.

         Not Applicable.

Item 8.  Exhibits.

         See Exhibit Index.


Item 9.  Undertakings.

         (1) The undersigned  registrant  hereby  undertakes to file, during any
period in which  offers or sales are being made, a  post-effective  amendment to
the Registration Statement, as amended:

                     (i)  To include any prospectus required by Section 10(a)(3)
         of the Securities Act;

                    (ii) To  reflect  in the  prospectus  any  facts  or  events
         arising after the effective date of this registration statement (or the
         most recent post-effective amendment thereof) which, individually or in
         the aggregate,  represent a fundamental  change in the  information set
         forth in this registration statement; and

                   (iii) To include any material information with respect to the
         plan of  distribution  not  previously  disclosed in this  registration
         statement  or  any  material   change  to  such   information  in  this
         registration statement;

Provided,  however,  that  paragraphs  1(i)  and  1(ii)  do  not  apply  if  the
information  required  to be  included in a  post-effective  amendment  by those
paragraphs is contained in periodic reports filed by the registrant  pursuant to
Section  13 or  Section  15(d) of the  Exchange  Act that  are  incorporated  by
reference in the Registration Statement.

         (2) The undersigned  registrant hereby undertakes that, for the purpose
of determining any liability under the Securities Act, each such  post-effective
amendment  shall be deemed to be a new  registration  statement  relating to the
securities  offered  herein,  and the offering of such  securities  at that time
shall be deemed to be the initial bona fide offering thereof.

         (3)  The  undersigned  registrant  hereby  undertakes  to  remove  from
registration by means of a post-effective  amendment any of the securities being
registered which remain unsold at the termination of the offering.

         (4) The undersigned  registrant hereby undertakes that, for purposes of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Exchange Act (and, where  applicable,  each filing of an employee benefit plan's
annual  report   pursuant  to  Section  15(d)  of  the  Exchange  Act)  that  is
incorporated by reference in this registration statement shall be deemed to be a
new registration  statement  relating to the securities  offered herein, and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

         (5)  Insofar  as  indemnification  for  liabilities  arising  under the
Securities Act may be permitted to directors,  officers and controlling  persons
of the  registrant  pursuant to the  foregoing  provisions,  or  otherwise,  the
registrant has been advised that in the opinion of the SEC such  indemnification
is against public policy as expressed in the  Securities Act and is,  therefore,
unenforceable.  In the  event  that a claim  for  indemnification  against  such
liabilities  (other than the payment by the  registrant of expenses  incurred or
paid by a  director,  officer or  controlling  person of the  registrant  in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as  expressed  in the  Securities  Act and will be  governed by the final
adjudication of such issue.




                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing on Form S-8 and has duly  caused  this  post-effective
amendment  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the Town of Basking Ridge, State of New Jersey, on the 1st day of
April, 2002.

                               AT&T CORP.


                               By:  /s/    Edward M. Dwyer
                                    ----------------------------------
                                    Name:  Edward M. Dwyer
                                    Title: Vice President and Treasurer


            Pursuant to the  requirements  of the Securities  Act of 1933,  this
post-effective  amendment to the  Registration  Statement No. 333-61679 has been
signed by the following persons in the capacities and on the date indicated.

            SIGNATURE                          CAPACITY
    PRINCIPAL EXECUTIVE OFFICER:

C. Michael Armstrong*              Chairman and Chief Executive Officer

    PRINCIPAL FINANCIAL OFFICER:

Charles H. Noski*                  Vice Chairman and Chief Financial Officer

    PRINCIPAL ACCOUNTING OFFICER:

Nicholas S. Cyprus*                Vice President and Controller

     DIRECTORS
C. Michael Armstrong*
Kenneth T. Derr*
M. Kathryn Eickhoff*
George M. C. Fisher*
Amos B. Hostetter*
Donald F. McHenry*
Michael I. Sovern*
Sanford I. Weill*


* By: /s/ Edward M. Dwyer
      ---------------------
          Edward M. Dwyer
          (Attorney-In-Fact)
 April 1, 2002




                                  EXHIBIT INDEX

EXHIBIT
NUMBER                            EXHIBIT DESCRIPTION

5           Opinion of Robert S. Feit*

23.1        Consent of PricewaterhouseCoopers LLP

23.2        Consent of KPMG LLP

24.1        Powers of Attorney*

*Previously filed as Exhibits to Registration Statement No. 333-61676