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                                                                   EXHIBIT 10.33

                        AMENDMENT TO EMPLOYMENT AGREEMENT

         The EMPLOYMENT AGREEMENT dated November 15, 2001, between PALL
CORPORATION, a New York Corporation (the "Company") and the undersigned, DONALD
STEVENS ("Executive"), as the same may have heretofore been amended, is hereby
amended, effective as of the date set forth below, by adding a new section
reading and providing as follows:

                  ss.15. Delay in Payment. Notwithstanding any provision in this
         Agreement to the contrary, any payment otherwise required to be made
         hereunder to Executive at any date shall be delayed for such period of
         time as may be necessary to meet the requirements of section
         409A(a)(2)(B)(i) of the Internal Revenue Code of 1986 as amended (the
         "Code"). On the earliest date on which any payments so delayed can be
         made without violating the requirements of section 409A(a)(2)(B)(i) of
         the Code (the "Delayed Payment Date"), there shall be paid to Executive
         (or if Executive has died, to "Executive's Successor" as the quoted
         term is defined below), in a single cash lump sum, an amount equal to
         the aggregate amount of all payments delayed pursuant to the preceding
         sentence, plus interest thereon at the Delayed Payment Interest Rate
         (as defined below) computed from the date on which each such delayed
         payment otherwise would have been made to Executive until the Delayed
         Payment Date. For purposes of the foregoing: (i) "Executive's
         Successor" shall mean such payee or payees as Executive shall at any
         time designate by written notice to the Company or in his last will and
         testament or, if no such designation is made, then to the legal
         representatives of Executive's estate, and (ii) the "Delayed Payment
         Interest Rate" shall mean the national average annual rate of interest
         payable on jumbo six-month bank certificates of deposit, as quoted in
         the business section of the most recently published Sunday edition of
         the New York Times preceding the date as of which Executive is treated
         as having incurred a "separation from service" for purposes of section
         409A(a)(2)(B)(i).

         IN WITNESS WHEREOF the parties hereto have executed this Amendment as
of and effective July 18, 2006.

                                        PALL CORPORATION

                                        By:  /s/ MARCUS WILSON
                                                 ---------------------------
                                                 Marcus Wilson
                                                 President

                                        EXECUTIVE

                                        /s/ DONALD STEVENS
                                            -------------------------------
                                            (Signature)<PAGE>

                                                                   EXHIBIT 10.34

SECOND AMENDMENT TO EMPLOYMENT AGREEMENT DATED MAY 1, 2003 BETWEEN PALL
CORPORATION AND ANDREW DENVER AS FIRST AMENDED ON NOVEMBER 19, 2003 (THE
"AGREEMENT")

Pall Corporation (the "Company") and Andrew Denver (the "Executive") agree to
the following: (i) the term of the Agreement will end on December 1, 2006 (the
"Termination Date"); (ii) the Termination Date is inclusive of Executive's
taking his accrued statutorily provided Australian Long Service Leave and his
accrued vacation; (iii) for the purposes of the Pall Corporation Management
Stock Purchase Plan, the Executive's termination of employment will be treated
as an Involuntary Separation; (iv) for the period from August 1, 2005 until the
Termination Date, the Executive shall absent himself from the office and the
Executive's required duties are modified so that there are no required duties or
required assignments to be performed by the Executive for the Company or its
related entities; (v) from August 1, 2005 until the Termination Date, the
Executive must make himself available for assistance to the Company when
reasonably requested by the Company; (vi) from August 1, 2005 until the
Termination Date the Executive is permitted to engage in outside business
activities provided that they are compliant with the non-compete and
confidentiality provisions of this Agreement; (vii) Executive shall resign as
Senior Vice President of the Company and any subsidiaries of the Company of
which he is an officer effective August 31, 2005; and (viii) all other terms and
conditions of the Agreement other than those amended by this Amendment remain in
full force and effect including, but not limited to, the covenant not to compete
for eighteen (18) months after the Termination Date.

It is agreed that no bonus would be earned for 2007 fiscal year.

The Agreement is hereby amended effective June 21, 2005.

/s/  MARCUS WILSON                           /s/ ANDREW DENVER
     --------------------------                  ------------------------
By:  Marcus Wilson, President                    Executive: Andrew Denver
     Pall Corporation<PAGE>

                                                                   EXHIBIT 10.35

                        AMENDMENT TO EMPLOYMENT AGREEMENT

         The EMPLOYMENT AGREEMENT dated May 1, 2003, between PALL CORPORATION, a
New York corporation (the "Company") and Andrew Denver ("Executive"), as the
same may have heretofore been amended to substitute the Company's 2004 Executive
Incentive Bonus Plan for the 2001 Executive Incentive Bonus Plan as an
attachment thereto (said Employment Agreement as the same may have been so
amended being hereinafter called "the Employment Agreement"), is hereby amended
as follows:

         WHEREAS, Section 3(b) of the Employment Agreement provides for a bonus
to Executive computed under the 2004 Executive Incentive Bonus Plan adopted by
the Company in 2003, a copy of which is annexed to and incorporated by reference
into the Agreement (the "Original 2004 Bonus Plan"), and

         WHEREAS, by action of the Compensation Committee of the Board of
Directors on January 18, 2006 the Original 2004 Bonus Plan was amended in
certain respects so that the amended Bonus Plan should be substituted for the
Original 2004 Bonus Plan as the attachment to the Employment Agreement, and

         WHEREAS, none of said amendments will decrease or diminish the amount
of the bonus which Executive is entitled to receive under the Employment
Agreement and accordingly this Amendment may be made by the Company without
execution by Executive,

         NOW, THEREFORE, the Employment Agreement is hereby amended, effective
for the Company's fiscal year ending July 31, 2006 and subsequent fiscal years,
by substituting the 2004 Executive Incentive Bonus Plan in the form annexed
hereto for the Original 2004 Bonus Plan for all purposes of the Employment
Agreement.

                                      PALL CORPORATION

Dated: May 3, 2006
                                      By:  /s/ MARCUS WILSON
                                               --------------------------------
                                               Marcus Wilson
                                               President<PAGE>

                                                                   EXHIBIT 10.36

                        AMENDMENT TO EMPLOYMENT AGREEMENT

         The EMPLOYMENT AGREEMENT dated September 12, 2005, between PALL
CORPORATION, a New York corporation (the "Company") and Roberto Perez
("Executive"), ("the Employment Agreement"), is hereby amended as follows:

         WHEREAS, Section 3(b) of the Employment Agreement provides for a bonus
to Executive computed under the 2004 Executive Incentive Bonus Plan adopted by
the Company in 2003, a copy of which is annexed to and incorporated by reference
into the Agreement (the "Original 2004 Bonus Plan"), and

         WHEREAS, by action of the Compensation Committee of the Board of
Directors on January 18, 2006 the Original 2004 Bonus Plan was amended in
certain respects so that the amended Bonus Plan should be substituted for the
Original 2004 Bonus Plan as the attachment to the Employment Agreement, and

         WHEREAS, none of said amendments will decrease or diminish the amount
of the bonus which Executive is entitled to receive under the Employment
Agreement and accordingly this Amendment may be made by the Company without
execution by Executive,

         NOW, THEREFORE, the Employment Agreement is hereby amended, effective
for the Company's fiscal year ending July 31, 2006 and subsequent fiscal years,
by substituting the 2004 Executive Incentive Bonus Plan in the form annexed
hereto for the Original 2004 Bonus Plan for all purposes of the Employment
Agreement.

                                      PALL CORPORATION

Dated: May 3, 2006
                                      By:  /s/ MARCUS WILSON
                                               --------------------------------
                                               Marcus Wilson
                                               President<PAGE>

                                                                   EXHIBIT 10.37

                        AMENDMENT TO EMPLOYMENT AGREEMENT

         The EMPLOYMENT AGREEMENT dated September 12, 2005, between PALL
CORPORATION, a New York Corporation (the "Company") and the undersigned, ROBERTO
PEREZ ("Executive"), as the same may have heretofore been amended, is hereby
amended, effective as of the date set forth below, by adding a new section
reading and providing as follows:

                  ss.15. Delay in Payment. Notwithstanding any provision in this
         Agreement to the contrary, any payment otherwise required to be made
         hereunder to Executive at any date shall be delayed for such period of
         time as may be necessary to meet the requirements of section
         409A(a)(2)(B)(i) of the Internal Revenue Code of 1986 as amended (the
         "Code"). On the earliest date on which any payments so delayed can be
         made without violating the requirements of section 409A(a)(2)(B)(i) of
         the Code (the "Delayed Payment Date"), there shall be paid to Executive
         (or if Executive has died, to "Executive's Successor" as the quoted
         term is defined below), in a single cash lump sum, an amount equal to
         the aggregate amount of all payments delayed pursuant to the preceding
         sentence, plus interest thereon at the Delayed Payment Interest Rate
         (as defined below) computed from the date on which each such delayed
         payment otherwise would have been made to Executive until the Delayed
         Payment Date. For purposes of the foregoing: (i) "Executive's
         Successor" shall mean such payee or payees as Executive shall at any
         time designate by written notice to the Company or in his last will and
         testament or, if no such designation is made, then to the legal
         representatives of Executive's estate, and (ii) the "Delayed Payment
         Interest Rate" shall mean the national average annual rate of interest
         payable on jumbo six-month bank certificates of deposit, as quoted in
         the business section of the most recently published Sunday edition of
         the New York Times preceding the date as of which Executive is treated
         as having incurred a "separation from service" for purposes of section
         409A(a)(2)(B)(i).

         IN WITNESS WHEREOF the parties hereto have executed this Amendment as
of and effective July 18, 2006.

                                       PALL CORPORATION

                                       By:  /s/ MARCUS WILSON
                                                --------------------------
                                                Marcus Wilson
                                                President

                                       EXECUTIVE

                                       /s/ ROBERTO PEREZ
                                           -------------------------------
                                           (Signature)

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