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Exhibit 10.24    
  

 
 

AMENDMENT 2002-4    
    
    HILTON HOTELS RETIREMENT PLAN    
  

        WHEREAS, Hilton Hotels Corporation (the "Company") maintains the Hilton Hotels Retirement Plan (the "Plan"); and 

        WHEREAS,
the Board of Directors of the Company has granted the Hilton Hotels Pension and Thrift Committee (the "Committee") the authority to adopt amendents to the Plan on behalf of the
Company and all Participating Affiliates (as defined in the Plan) which amendment authority is reflected in Section 8.1 of the Plan; and 

        WHEREAS,
the Company wishes to amend the Plan provisions applicable to the determination of Years of Vesting Service. 

        NOW,
THEREFORE, the Plan is amended as follows effective as of January 1, 2003; such amendment shall apply only to individuals who are Participants under the Plan on or after the
effective date of the amendment: 

        1.    The
definition of "Years of Vesting Service" in Section 1.2 of the Plan is amended by the addition of the following paragraphs at the end thereof: 

        "(g)
In the case of an Employee whose Compensation is determined on the basis of an hourly rate, the number of hours to be credited to the Employee in a Vesting Computation Period solely
for the purpose of determining Years of Vesting Service will be determined on the basis of Compensation, if: 

        (1)  The
Employee is credited with the number of hours equal to: the total of the Employee's Compensation during the Vesting Computation Period divided by the Employee's
hourly rate as in effect at such times during the Vesting Computation Period; or the Employee's total Compensation during the Vesting Computation Period divided by the Employee's lowest hourly rate
during the Vesting Computation Period, or by the lowest hourly rate payable to an Employee in the same or a similar job classification reasonably defined; and 

        (2)  870 hours
credited under paragraph (1) of this subsection (g) are treated as equivalent to 1,000 Hours of Service, and 435 hours credited
under paragraph (1) above are treated as equivalent to 500 Hours of Service. 

For
purposes of this subsection (g), Compensation at premium rates for overtime will be divided by the Employee's hourly rate for overtime, rather than the regular time hourly rate. 

        (h)  In
the case of an Employee whose Compensation is determined on a basis other than an hourly rate, hours to be credited to the Employee in a Vesting Computation Period
solely for the purpose of determining Years of Vesting Service will be determined on the basis of Compensation if: 

        (1)  The
Employee is credited with the number of hours equal to the Employee's total Compensation during the Vesting Computation Period divided by the Employee's lowest
hourly rate of Compensation during the Vesting Computation Period, determined under subsection (i) below; and 

        (2)  750 hours
credited under paragraph (1) of this subsection (h) are treated as equivalent to 1,000 Hours of Service, and 375 hours credited
under paragraph (1) of this subsection (h) are treated as equivalent to 500 Hours of Service. 

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        (i)    For
purposes of subsection (h) above, an Employee's hourly rate of Compensation shall be determined as follows: 

        (1)  In
the case of an Employee whose Compensation is determined on the basis of a fixed rate for a specified period of time (other than an hour) such as a day, week or
month, the Employee's hourly rate of Compensation shall be the Employee's lowest rate of Compensation during a Vesting Computation Period for such specified period of time divided by the number of
hours regularly scheduled for the performance of duties during such period of time. For purposes of the preceding sentence, in the case of an Employee without a regular work schedule, the Employee's
hourly rate of Compensation shall be calculated on the basis of a 40-hour workweek or an 8-hour workday, or any other reasonable basis which reflects the average hours worked
by the Employee over a representative period of time, provided that the basis so used is consistently applied to all Employees within the same job classifications reasonably defined. 

        (2)  In
the case of an Employee whose Compensation is not determined on the basis of a fixed rate for a specified period of time, the Employee's hourly rate of Compensation
shall be the lowest hourly rate of Compensation payable to Employees in the same job classification as the Employee, or, if no Employees in the same job classification have an hourly rate, the minimum
wage as established from time to time under Section 6(a)(1) of the Fair Labor Standards Act of 1938, as amended. 

        (j)    During
any period in which an Employee is not earning Years of Benefit Service, the Employee will earn a Year of Vesting Service for each 365 days of Service as
determined in accordance with the elapsed time rules of Section 2530.200b-9 of the Department of Labor Regulations as set forth in Appendix H to the Plan, and shall not be
credited with Years of Vesting Service under the methods set forth in subsections (g) and (h) during such period." 

        2.    The
Plan is amended by the addition of the following Appendix H at the end thereof: 

"Appendix H 

ELAPSED TIME METHOD 

        This
Appendix G sets forth the definitions and rules applicable for determining Years of Vesting Service for Employees who are subject to subsection (j) of the definition
of "Years of Vesting Service' in Section 1.2. 

        "Break
in Employment' means an Employee's resignation, discharge, death or retirement from or by the Company and all Related Companies, effective as of the date of the applicable event
or the first anniversary of the first date on which an Employee remains absent from work (with or without pay) with the Company and all Related Companies for any reason other than resignation,
discharge, death
or retirement (unless such event occurs during such one-year period). In determining whether a Break in Employment has occurred, the following rules shall apply: 

        (a)  A
Break in Employment shall not occur solely by reason of leaves of absence authorized by the Company or a Related Company before or after the absence, in accordance
with established policies, and vacation periods, temporary layoffs for lack of work, and military leaves. 

        (b)  Continuation
upon temporary layoff for lack of work for a period in excess of one year shall be considered a discharge effective as of the anniversary date of the
commencement of such period. 

        (c)  Failure
to return to work after expiration of any leave of absence or after recall from any temporary layoff, unless such failure is excused by the Company or a Related
Company 

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shall be considered a resignation, effective as of the earlier of the end of such leave of absence or layoff or the anniversary date of the commencement of such leave of absence or layoff. 

        (d)  Failure
of an Employee on military leave to make application for reemployment within the period during which he is entitled thereto under laws of the United States shall
be considered a resignation effective as of the earlier of the end of such military leave or the anniversary date of commencement of such military leave. 

        "Employment
Date' means the date on which an Employee first completes an Hour of Service on initial employment by the Company or a Related Company. 

        "Reemployment
Date' means the date (following a Break in Employment) on which an Employee first completes an Hour of Service with the Company or a Related Company. 

        "Service'
means (i) each period, commencing on the Employee's Employment Date and continuing until such Employee's Break in Employment, and (ii) each period, commencing on
the Employee's Reemployment Date and continuing until such Employee's subsequent Break in Employment. "Service' also includes the period commencing on the date of the Employee's resignation,
discharge, death or retirement from or by the Company and all Related Companies and ending on the Employee's Reemployment Date if such period is one year or less. 

        "Sixty
Month Break in Service' means a period of 60 consecutive months following a Break in Employment during which the individual involved is not employed by the Company or a Related
Company. However, if the Break in Employment occurred by virtue of maternity or paternity reasons set forth in the definition of One Year Break in Service Year, then the period used to determine if a
Sixty Month Break in Service has occurred shall not commence until the second annual anniversary of the first date of such Break in Employment. 

        If
a Participant incurs a Sixty Month Break in Service prior to obtaining any vested interest under this Plan, his Years of Vesting Service completed prior to the Sixty Month Break in
Service shall be taken into account if, and only if, the period of absence (not counting the first 12 months of absence in the case of a Break in Employment caused by maternity or paternity)
following his Break in Employment is less than the Participant's Service completed prior to his Break in Employment. 

        In
the case of an Employee who transfers from a class of Employees whose service is determined on the basis of Vesting Computation Periods to a class of Employees whose service is
determined under the elapsed time method under this Appendix G, the Employee shall receive credit for a period of service consisting of 

        (A)  A
number of Years of Vesting Service equal to the number of Years of Vesting Service credited to the Employee before the Vesting Computation Period during which the
transfer occurs; and 

        (B)  The
greater of (1) the period of Service that would be credited to the Employee under the elapsed time method for his service during the entire Vesting
Computation Period in which the transfer occurs or (2) the service taken into account under the Vesting Computation Periods method as of the date of the transfer. In addition, the Employee
shall receive credit for Service subsequent to the transfer commencing on the day after the last day of the Vesting Computation Period in which the transfer occurs. 

        In
the case of an Employee who transfers from a class of Employees whose service is determined under the elapsed time method under this Appendix G to a class of Employees whose
service is determined on the basis of Vesting Computation Periods— 

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        (A)  The
Employee shall receive credit, as of the date of the transfer, for a number of Years of Vesting Service equal to the number of 1-year periods of Service
credited to the Employee as of the date of the transfer, and 

        (B)  The
Employee shall receive credit, in the Vesting Computation Period which includes the date of the transfer, for ten Hours of Service for each day the Employee is
credited with at least one Hour of
Service for any fractional part of a year credited to the Employee under this Appendix G as of the date of the transfer." 

        IN
WITNESS WHEREOF, this Amendment 2002-4 is hereby adopted this 10th day of December, 2002. 

	 	 	HILTON HOTELS CORPORATION
	

 	
 	

By:	

/s/  MOLLY McKENZIE-SWARTS      

4

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Exhibit 10.24

AMENDMENT 2002-4 HILTON HOTELS RETIREMENT PLANQuickLinks
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Exhibit 10.37    
  

 
 

AMENDMENT 2002-1 TO
  HILTON HOTELS
  401(K) SAVINGS PLAN    
  

        The Pension and Thrift Committee (the "Committee") for Hilton Hotels Corporation hereby adopts the following amendment to the Hilton Hotels 401(k) Savings Plan
(the "Plan"): 

        1.    The
preamble to the Plan is amended by the addition of the following paragraph at the end thereof: 

        "The
Plan is a multiple employer plan within the meaning of Section 413(c) of the Code." 

        2.    The
first sentence of the definition of "Compensation" in Article I of the Plan is amended to read as follows effective January 1, 2001: 

        "Compensation'
means all compensation paid by the Company or a Participating Employer to an Eligible Employee during the Plan Year and reportable on Form W-2, plus any
amounts excluded from income that were contributed to a plan qualifying under Section 401(k) of the Code as salary reduction contributions or to a cafeteria plan under Section 125 of the
Code and, effective January 1, 2001, any amounts which are excluded from the Participant's income under Code Section 132(f)(4)." 

        3.    Article I
of the Plan is amended by the addition of the following sentence at the end of the definition of "Employee" effective January 1, 1997: 

        "For
purposes of the Plan, the term "leased employee' means any person who is not an employee of the Company or an Affiliated Employer and who provides services to the Company or an
Affiliated Employer if: (i) such services are provided pursuant to an agreement between the Company or an Affiliated Employer and any other person; (ii) such person has performed such
services for the Company or an Affiliated Employer on a substantially full-time basis for a period of at least one year; and (iii) such services are performed under primary
direction or control of the Company or an Affiliated Employer." 

        4.    Sub-section (e)
of the definition of "Highly Compensated Employee" in Article I of the Plan is amended to read as follows effective
January 1, 1997: 

        "(e)
This definition of "Highly Compensated Employee' shall be effective for Plan Years beginning on or after January 1, 1997, except that for purposes of determining if an
Employee was a Highly Compensated Employee in 1997, this definition will be treated as having been in effect in 1996." 

        5.    The
last sentence of Section 2.3 of the Plan is amended to read as follows effective December 12, 1994: 

        "Effective
December 12, 1994, notwithstanding any other provision of the Plan to the contrary, contributions, benefits, and service credit with respect to qualified military
service will be provided in accordance with Section 414(u) of the Code." 

        6.    Section 3.1
of the Plan is amended by the addition of the following sub-section (e) at the end thereof effective January 1, 2001: 

        "(e)
Within a reasonable period before the beginning of each Plan Year in which the Plan is intended to satisfy the requirements of Sections 401(k)(12) and 401(m)(11) of the Code, the
Company will provide each Eligible Employee with a written notice of the Eligible Employee's rights and obligations under the Plan which is sufficiently accurate and comprehensive to appraise 

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the Eligible Employee of such rights and obligations and is written in a manner calculated to be understood by the average Eligible Employee. If an Employee becomes an Eligible Employee after the
90th day before the beginning of the Plan Year and, as a result, does not receive the notice described in the prior sentence, the notice must be provided to such Eligible Employee no more than
90 days before the Employee becomes an Eligible Employee but not later than the date the Employee becomes an Eligible Employee. In addition to any other election periods provided under the
Plan, each Eligible Employee may make or modify an election to make Compensation Deferrals during the 30-day period immediately following receipt of the notice described above." 

        7.    Section 3.2
of the Plan is amended by the addition of the following sub-section (d) at the end thereof effective January 1, 2001: 

        "(d)
For each Plan Year in which the Plan is intended to satisfy the requirements of Sections 401(k)(12) and 401(m)(11) of the Code: (i) the rate of Employer Matching Contribution
for any Highly Compensated Employee cannot be greater than the rate of Employer Matching Contribution for any Participant who is not a Highly Compensated Employee and who has the same rate of
Compensation Deferrals; and (ii) any Employer Matching Contribution will not be counted toward the minimum contribution requirement of Section B.5 applicable to "top-heavy'
plans." 

        8.    Section 4.1
of the Plan is amended to read as follows effective January 1, 1995: 

        "Notwithstanding
anything else contained herein, the Annual Additions to all the Accounts of a Participant shall not exceed the lesser of $30,000 (adjusted as permitted under
Section 415(d)(1) of the Code and regulations issued thereunder) or 25% of the Participant's Section 415 Compensation from the Company or Affiliated Employers during the Plan Year, in
accordance with the provisions of Appendix A attached hereto." 

        9.    Section 6.1(d)
of the Plan is amended to read as follows effective January 1, 1998: 

        "(d)
Notwithstanding the foregoing, if, on or after January 1, 1998, the nonforfeitable balance in the Participant's Accounts exceeds $5,000, (or, if greater, such other amount as
may be provided for under Section 411(a)(ii)(A) of the Code or the Treasury Regulations promulgated thereunder), distribution shall be made following a Break in Employment only if the
Participant consents to a distribution of the nonforfeitable balance of his Accounts. If the Participant does not so consent, (unless Treasury Regulations otherwise provide and the Committee adopts
different rules) distribution of the amounts payable shall be delayed until the end of the month in which the Participant's death occurs or in which the Participant attains Normal Retirement Age." 

        10.  Section 6.7(b)
of the Plan is amended to read as follows effective January 1, 1997: 

        "(b)
Notwithstanding anything to the contrary contained herein, the distribution options under the Plan shall comply with Section 401(a)(9) of the Code and regulations promulgated
thereunder, which are hereby incorporated by this reference as a part of the Plan. Accordingly, unless otherwise permitted by law, the entire interest of each Participant who is a five percent (5%)
owner with respect to the Plan Year in which the Participant attains age 701/2 shall commence to be distributed by April 1 of the calendar year following the calendar year in
which the Participant reaches age 701/2. Any Participant not described in the prior sentence who has not commenced receipt of distributions as of January 1, 1997, shall be
required to receive distribution of his interest in the Plan by April 1 following the later of the calendar year in which the Participant attains age 701/2 or the calendar year
in which he retires." 

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        11.  Section 6.8(b)
of the Plan is amended to read as follows effective January 1, 1999: 

        "(b)
For purposes of this Section 6.8, an "Eligible Rollover Distribution' is any distribution of all or any portion of the balance to the credit of the Distributee, except that
an Eligible Rollover Distribution does not include: 

          (i)  any
distribution that is one of a series of substantially equal periodic payments (not less frequently than annually) made for the life (or joint life expectancies) of
the Distributee and the Distributee's designated Beneficiary, or for a specified period of ten years or more; 

        (ii)  any
distribution to the extent such distribution is required under Section 401(a)(9) of the Code; 

        (iii)  the
portion of any distribution that is not includible in gross income (determined without regard to the exclusion for net unrealized appreciation with respect to
employer securities); 

        (iv)  effective
January 1, 1999, hardship withdrawals from Compensation Deferral Accounts; and 

        (v)  any
other type of distribution which the Internal Revenue Service announces (pursuant to regulation, notice or otherwise) is not an Eligible Rollover Distribution." 

        12.  The
definition of "Section 415 Compensation" in Section A.1 of the Plan is amended to read as follows effective January 1, 1998: 

        "'Section 415 Compensation' shall mean a Participant's wages within the meaning of Code Section 3401(a) and all other
payments of compensation to the Participant by the Company (in the course of the Company's business) for which the Company is required to provide the Participant a written statement under Code
Sections 6041(d), 6051(a)(3) and 6052. Section 415 Compensation shall be determined without regard to any rules under Code Section 3401(a) that limit the remuneration included in wages
based on the nature or location of the employment or the services performed.
Compensation for any limitation year is the compensation actually paid or includible in gross income during such year. Effective January 1, 1998, "Section 415 Compensation' shall include
elective deferrals as defined in Section 402(g)(3) of the Code and any amount which is contributed or deferred by the Company or an Affiliated Employer at the election of an Employee and which
is not includible in the gross income of the Employee by reason of Code Section 125, 132(f)(4) or 457." 

        13.  Section B.5(c)
of the Plan is amended by the addition of the following sentence at the end thereof effective January 1, 2000: 

"This
Section B.5(c) shall not apply to Participants who are Employees on or after January 1, 2000." 

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        IN
WITNESS WHEREOF, the Committee has caused this amendment to be executed this 12th day of June, 2002. 

	 	 	Hilton Hotels Corporation

Pension and Thrift Committee
	

 	
 	

By:	

/s/  MATTHEW J. HART      

	

 	
 	

By:	

/s/  MOLLY McKENZIE-SWARTS      

	

 	
 	

By:	

/s/  DIETER HUCKESTEIN      

4

QuickLinks

Exhibit 10.37

AMENDMENT 2002-1 TO HILTON HOTELS 401(K) SAVINGS PLAN

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