Exhibit 31.1

# Section 302 
Certification of Chief Executive Officer

I,
Erik Vonk, certify that:

|(1) | I
have reviewed this quarterly report on Form 10-Q of Gevity HR, Inc.;
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|(2) | Based
on my knowledge, this quarterly report does not contain any untrue
               statement of a material fact or omit to state a material fact necessary to
make                the statements made, in light of the circumstances under which such
statements                were made, not misleading with respect to the period covered by
this quarterly                report;
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|(3) | Based
on my knowledge, the financial statements, and other financial information
                    included in this quarterly 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
quarterly report;
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|(4) | The
registrants other certifying officer and I are responsible for
                    establishing and maintaining disclosure controls and procedures (as
defined in                     Exchange Act Rules 13a-14 and 15d-14) for the registrant
and we have:
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| | 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 the registrant,
including its consolidated                     subsidiaries, is made known to us by
others within those entities, particularly                     during the period in which
this quarterly report is being prepared;
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| | b. | evaluated the effectiveness of the registrant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
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| | c. | disclosed in this report any change in the registrants internal control
                    over financial reporting that occurred during the registrants most recent
                    fiscal quarter that has materially affected, or is reasonably likely to
                    materially affect, the registrants internal control over financial
                    reporting; and;
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|(5) | The
registrants other certifying officer and I have disclosed, based on
                    our most recent evaluation of internal control over financial
reporting, to the                     registrants auditors and the audit committee
of the registrants                     board of directors (or persons performing
the equivalent functions):
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| | 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 the registrants ability to record, process, summarize and
                    report financial information; and
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| | b. | any fraud, whether or not material, that involves management or other employees
                    who have a significant role in the registrants internal control over
                    financial reporting.
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|Dated:  August 13, 2003 |  | /s/ ERIK VONK          
|----------------------- |  | -----------------------
|                        |  | Erik Vonk              
|                        |  | Chief Executive Officer