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                                                                    EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO SECURITIES EXCHANGE ACT
RULE 13a-15(e)/15d-15(e) AS ADOPTED PURSUANT TO SECTION 302 OF THE
SARBANES-OXLEY ACT OF 2002

I, Richard L. Marcantonio, certify that:

1.       I have reviewed this quarterly report on Form 10-Q of G&K Services,
         Inc.;

2.       Based on my knowledge, this report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statement made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this report, fairly present in all material
         respects the financial condition, results of operations and cash flows
         of the registrant as of, and for, the periods presented in this report;

4.       G&K Services, Inc.'s other certifying officer and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for G&K
         Services, Inc., and have:

                  (a) designed such disclosure controls and procedures, or
         caused such disclosure controls and procedures to be designed under our
         supervision, to ensure that material information relating to G&K
         Services, Inc., including its consolidated subsidiaries, is made known
         to us by others within those entities, particularly during the period
         in which this report is being prepared;

                  (b) evaluated the effectiveness of G&K Services, Inc.'s
         disclosure controls and procedures and presented in this report our
         conclusions about the effectiveness of the disclosure controls and
         procedures, as of the end of the period covered by this report based on
         such evaluation; and

                  (c) disclosed in this report any change in G&K Services,
         Inc.'s internal control over financial reporting that occurred during
         G&K Services, Inc.'s most recent fiscal quarter that has materially
         affected, or is reasonably likely to materially affect, G&K Services,
         Inc.'s internal control over financial reporting;

5.       G&K Services, Inc.'s other certifying officer and I have disclosed,
         based on our most recent evaluation of internal control over financial
         reporting, to G&K Services, Inc.'s auditors and the audit committee of
         G&K Services, Inc.'s board of directors (or persons performing the
         equivalent functions):

                  (a) all significant deficiencies and material weaknesses in
         the design or operation of internal control over financial reporting
         which are reasonably likely to adversely affect G&K Services, Inc.'s
         ability to record, process, summarize and report financial information;
         and

                  (b) any fraud, whether or not material, that involves
         management or other employees who have a significant role in G&K
         Services, Inc.'s internal control over financial reporting.

Date: November 5, 2004

                                          By: /s/ Richard L. Marcantonio
                                              ----------------------------------
                                              Richard L. Marcantonio, President
                                              and Chief Executive Officer
                                              (Principal Executive Officer)