<PAGE>
                                                                 EXHIBIT 10(a)


                            SEVENTH AMENDMENT TO
                 FIRST AMENDED AND RESTATED CREDIT AGREEMENT

     This SEVENTH AMENDMENT TO FIRST AMENDED AND RESTATED CREDIT AGREEMENT
(this "AGREEMENT") is entered into as of February 18, 2000 (the "EFFECTIVE
DATE"), by and among Haggar Clothing Co., a Nevada corporation, f/k/a Haggar
Apparel Company (the "COMPANY"), Haggar Corp., a Nevada corporation
("HAGGAR"), the banks listed on the signature pages of this Agreement
(collectively, the "BANKS"), Chase Bank of Texas, National Association, a
national banking association, individually and as agent (the "AGENT") for the
Banks, and is consented to by Haggar and the domestic subsidiaries of the
Company listed on the signature pages of this Agreement (collectively, the
"SUBSIDIARIES").

                                RECITALS:

     WHEREAS, pursuant to that certain First Amended and Restated Credit
Agreement (as heretofore and herein amended, the "CREDIT AGREEMENT') dated as
of September 18, 1996, executed by and among the Company, Haggar, the Banks
and the Agent, the Banks agreed to make advances to the Company on certain
terms and conditions set forth therein (each capitalized term used but not
defined herein shall have the meaning given to such term in the Credit
Agreement, as amended); and

     WHEREAS, the Credit Agreement has been amended by that certain First
Amendment to First Amended and Restated Credit Agreement dated as of
December 31, 1996, that certain Second Amendment to First Amended and
Restated Credit Agreement dated as of June 30, 1998, that certain Third
Amendment to First Amended and Restated Credit Agreement dated as of
December 15, 1997, that certain Fourth Amendment to First Amended and Restated
Credit Agreement dated as of June 30, 1998, and that certain Fifth Amended and
Restated Credit Agreement dated as of December 29, 1998; and

     WHEREAS, the Credit Agreement was further amended by Sixth Amendment to
First Amended and Restated Credit Agreement dated as of May 28, 1999, and
pursuant to Article I thereof, the Termination Date was extended to June 30,
2002, by notice from the Company dated April 30, 1999, and written
concurrence by the Banks pursuant to request dated June 7, 1999; and

     WHEREAS, the Company has requested that the Credit Agreement be amended
to modify Section 2.2; and

     WHEREAS, the Agent and the Banks are agreeable to such request under the
present circumstances and upon the terms and conditions as set forth below.

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
herein contained, and other good and valuable consideration, the receipt and
sufficiency of which are hereby

                                                                         Page 1

<PAGE>
acknowledged and confessed, the Company, Haggar, the Banks and the Agent
hereby agree as follows:

                               AGREEMENT:

     1.  AMENDMENT TO SECTION 2.2 of the Credit Agreement is hereby amended
and restated in its entirety to read as follows:

               2.2  USE OF PROCEEDS.  The proceeds of the Advances shall be
          used by the Company in compliance with Section 5.15 hereof, for
          working capital and general corporate purposes, in compliance with
          Section 7.2 in all respects and in the ordinary course of its
          business. Proceeds of the Advances may also be used to fund the
          repurchase of shares of the common stock of Haggar on the open
          market or through privately negotiated transactions; provided,
          however, that proceeds used for such purpose, in the aggregate over
          the term of the Obligations, shall not exceed $40,000,000. The
          provisions of this Section 2.2 are subject to, and shall not limit,
          modify or otherwise affect, the other covenants and agreements
          contained in this Agreement, including, without limitation, the
          covenants contained in Article 7 hereof.

     2.  CERTIFICATES. This Agreement shall be effective of the date first
above written when executed by all parties hereto and consented to by the
Guarantors as provided on the signature pages hereto, and upon receipt by the
Agent of the following, each in form, substance and bearing a date
satisfactory to the Agent and its counsel:

          (a)  A certificate of the Secretary or Assistant Secretary of the
     Company and the Guarantors, respectively, certifying (i) that, except as
     indicated therein, there as been no change to the articles of
     incorporation or bylaws of the Company or the Guarantors since the same
     were furnished to the Agent in connection with the execution of the
     Credit Agreement, (ii) as to the name and title of the officers of the
     Company and the Guarantors and the authority of such officers to execute
     this Agreement; and (iii) as to the existence and good standing in their
     respective states of incorporation of the Company and the Guarantors.

          (b)  A certificate, signed by the Treasurer of the Company or the
     Chief Financial Officer of the Company, stating that as of the date of
     this Agreement and after giving effect to this Agreement the statements
     set forth in Sections 4.2(a), (b) and (g) of the Credit Agreement are
     ture and correct.

     3.  EFFECTIVENESS OF DOCUMENTS.  Except as expressly modified hereby,
all terms, provisions, representations, warranties, covenants and agreements
of the Company and Haggar related to the Loans, whether contained in the
Notes, the Credit Agreement and/or any of the other Loan Documents, are
hereby ratified and confirmed by the Company and Haggar, and all such

                                                                        Page 2

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agreements shall be and shall remain in full force and effect, enforceable in
accordance with their terms.

     4.  NO CLAIMS OR DEFENSES.  Each of the Company and Haggar, by the
execution of this Agreement, hereby declares that it has no offsets, claims,
counterclaims, defenses or other causes of action against the Agent or the
Banks related to any Loan, the Credit Agreement, any of the other Loan
Documents or the modification of the Credit Agreement pursuant to this
Agreement.

     5.  AUTHORITY.  Each of the Company and Haggar represents and warrants
that all requisite corporate action necessary for it to enter this Agreement
has been taken.

     6.  BINDING AGREEMENT.  This Agreement shall be binding upon, and shall
inure to the benefit of, each party hereto and such party's legal
representatives, successors and assigns.

     7.  ENTIRE AGREEMENT.  THIS AGREEMENT AND THE LOAN DOCUMENTS REPRESENT
THE FINAL AGREEMENT AMONG THE PARTIES HERETO AND MAY NOT BE CONTRADICTED BY
EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS AMONG THE
PARTIES HERETO. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES
HERETO.

     8.  CHOICE OF LAW.  THIS AGREEMENT SHALL BE CONSTRUCTED IN ACCORDANCE
WITH THE INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE OF TEXAS,
BUT GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.

     9.  COUNTERPARTIES.  This Agreement may be executed in any number of
counterparts, all of which taken together shall constitute one agreement, and
any of the parties hereto may execute this Agreement by signing any such
counterpart.

                      [SEE SIGNATURES ON ATTACHED PAGES]

                                                                        Page 3

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     EXECUTED as of the date first above written.



                             HAGGAR CLOTHING CO., a Nevada corporation, f/k/a
                             Haggar Apparel Company


                             By: /s/ J.M. Haggar, III
                                -----------------------------------------------
                                     J.M. Haggar, III
                                     Chief Executive Officer


                             HAGGAR CORP., a Nevada corporation


                             By: /s/ J.M. Haggar, III
                                -----------------------------------------------
                                     J.M. Haggar, III
                                     Chief Executive Officer




THE BANKS                    CHASE BANK OF TEXAS, NATIONAL ASSOCIATION,
                             individually and as the Agent
$22,222,222.22

                             By: /s/ John P. Dean
                                -----------------------------------------------
                                     John P. Dean
                                     Senior Vice President


$22,222,222.22               BANK OF AMERICA, N.A.
                             successor-in-interest to NationsBank, N.A.

                             By: /s/ Deirdre B. Doyle
                                -----------------------------------------------
                                     Deirdre B. Doyle
                                     Principal


$18,518,518.51               COMERICA BANK -- TEXAS

                             By: /s/ Paul L. Strange
                                -----------------------------------------------
                                     Paul L. Strange
                                     Vice President



                                                                        Page 4

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$11,111,111.12               BANK ONE, N.A., a successor in interest to
                             The First National Bank of Chicago

                             By:  /s/ Thomas Freas
                                -------------------------
                                     Thomas Freas
                                     Managing Director

$14,814,814.81               THE BANK OF TOKYO-MITSUBISHI, LTD.,
                             DALLAS OFFICE

                             By:  /s/ Douglas M. Barnell
                                -------------------------
                                     Douglas M. Barnell
                                     Vice President

$11,111,111.12               NATIONAL CITY BANK, KENTUCKY

                             By:  /s/ Tom Gurbach
                                -------------------------
                                     Tom Gurbach
                                     Vice President






                                                                         Page 5

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                             CONSENT OF HAGGAR

     Haggar hereby (a) acknowledges its consent to this Agreement, (b)
ratifies and confirms all terms and provisions of the Parent Guaranty,
(c) agrees that the Parent Guaranty is and shall remain in full force and
effect, (d) acknowledges that there are no claims or offsets against, or
defenses or counterclaims to, the terms and provisions of and the obligations
created and evidenced by the Parent Guaranty, (e) reaffirms all agreements
and obligations under the Parent Guaranty with respect to the Loans, the
Notes, the Credit Agreement and all other documents, instruments or
agreements governing, securing or pertaining to the Loans, as the same may be
modified by this Agreement, and (f) represents and warrants that all
requisite corporate action necessary for it to execute this Agreement has
been taken.

                                       HAGGAR CORP.,
                                       a Nevada corporation

                                       By:   /s/  J.M. Haggar, III
                                          ---------------------------
                                          J.M. Haggar, III
                                          Chief Executive Officer

                                       Dated as of February 18, 2000.


                                                                         Page 6

<PAGE>

                       CONSENT OF DOMESTIC SUBSIDIARIES

     Each of the undersigned Subsidiaries hereby (a) acknowledges its consent
to this Agreement, (b) ratifies and confirms all terms and provisions of the
Subsidiary Guaranty to which it is a signatory, (c) agrees that the
Subsidiary Guaranty to which it is a signatory is and shall remain in full
force and effect, (d) acknowledges that there are no claims or offsets
against, or defenses or counterclaims to, the terms and provisions of and the
obligations created and evidenced by the Subsidiary Guaranty to which it is a
signatory, (e) reaffirms all agreements and obligations under the Subsidiary
Guaranty to which is it a signatory with respect to the Loans, the Notes, the
Credit Agreement and all other documents, instruments or agreements
governing, securing or pertaining to the Loans, as the same may be modified
by this Agreement, and (f) represents and warrants that all requisite
corporate action necessary for it to execute this Agreement has been taken.

                             BOWIE MANUFACTURING COMPANY,
                             a Nevada Corporation

                             By:  /s/ J.M. Haggar, III
                                -------------------------------------
                                     J.M. Haggar, III
                                     Chairman/Chief Executive Officer

                             CORSICANA COMPANY,
                             a Nevada corporation

                             By:  /s/ J.M. Haggar, III
                                -------------------------------------
                                     J.M. Haggar, III
                                     Chairman/Chief Executive Officer



                                                                         Page 7

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                             DALLAS PANT MANUFACTURING COMPANY,
                             a Nevada corporation

                             By: /s/ J.M. Haggar, III
                                ------------------------
                                    J.M. Haggar, III
                                    Chairman/Chief Executive Officer


                             GREENVILLE PANT MANUFACTURING
                             COMPANY, a Nevada corporation

                             By: /s/ J.M. Haggar, III
                                ------------------------
                                    J.M. Haggar, III
                                    Chairman/Chief Executive Officer


                             MCKINNEY PANT MANUFACTURING COMPANY,
                             a Nevada corporation

                             By: /s/ J.M. Haggar, III
                                ------------------------
                                    J.M. Haggar, III
                                    Chairman/Chief Executive Officer


                             OLNEY MANUFACTURING COMPANY,
                             a Nevada corporation

                             By: /s/ J.M. Haggar, III
                                ------------------------
                                    J.M. Haggar, III
                                    Chairman/Chief Executive Officer


                             WAXAHACHIE GARMENT COMPANY,
                             a Nevada corporation

                             By: /s/ J.M. Haggar, III
                                ------------------------
                                    J.M. Haggar, III
                                    Chairman/Chief Executive Officer


                                                                         Page 8

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                             LA ROMANA MANUFACTURING CORPORATION, a
                             Nevada corporation

                             By:  /s/ J.M. Haggar, III
                                --------------------------------
                                     J.M. Haggar, III
                                     Chairman/Chief Executive Officer

                             HAGGAR SERVICES, INC.,
                             a Texas corporation

                             By:  /s/ J.M. Haggar, III
                                --------------------------------
                                     J.M. Haggar, III
                                     Chairman/Chief Executive Officer


                             DUNCAN MANUFACTURING COMPANY,
                             an Oklahoma corporation

                             By:  /s/ J.M. Haggar, III
                                --------------------------------
                                     J.M. Haggar, III
                                     Chairman/Chief Executive Officer


                             WESLACO CUTTING, INC.,
                             a Nevada corporation

                             By:  /s/ J.M. Haggar, III
                                --------------------------------
                                     J.M. Haggar, III
                                     Chairman/Chief Executive Officer




                                                                         Page 9

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                             WESLACO SEWING, INC.,
                             a Nevada corporation

                             By:  /s/ J.M. Haggar, III
                                  ----------------------------------
                                  J.M. Haggar, III
                                  Chairman/Chief Executive Officer


                             HAGGAR DIRECT, INC.,
                             a Nevada corporation

                             By:  /s/ J.M. Haggar, III
                                  ----------------------------------
                                  J.M. Haggar, III
                                  Chairman/Chief Executive Officer


                             JERRELL, INC.,
                             a Nevada corporation

                             By:  /s/ J.M. Haggar, III
                                  ----------------------------------
                                  J.M. Haggar, III
                                  Chairman/Chief Executive Officer


                             SAN GABRIEL ENTERPRISES, INC.
                             a Texas corporation

                             By:  /s/ J.M. Haggar, III
                                  ----------------------------------
                                  J.M. Haggar, III
                                  Chairman/Chief Executive Officer


                                                                        Page 10

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                             MULTIPLES U.S.A., INC.,
                             a Texas corporation

                             By:  /s/ J.M. Haggar, III
                                  ----------------------------------
                                  J.M. Haggar, III
                                  Chairman/Chief Executive Officer

                             Dated as of February 18, 2000.


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