Document:

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                                                                   EXHIBIT 10.13

A R M K E L
-----------

September 26, 2001

Mr. Adrian Huns
Two Research Way
Princeton, NJ 08543

Re:  Employment with Armkel, LLC

Dear Adrian:

     As you know, Armkel, LLC, a joint venture formed by Church & Dwight Co.,
Inc. and Kelso Co., Inc., has entered into an agreement to purchase various
assets from Carter-Wallace. The acquisition is expected to occur on September
28, 2001. As you also know, we are currently negotiating and hopefully
finalizing a new employment agreement with you. However, in case the new
agreement cannot be executed prior to the Effective Time of the acquisition, we
wanted to assure you that the terms and conditions of your current
employment/change in control agreement would remain in force, and that, upon the
closing of the acquisition, we will assume all obligations thereunder from
Carter-Wallace and perform those obligations in the same manner and to the same
extent as Carter-Wallace would have been required to perform.

     In particular, contingent upon the acquisition, we would like to offer you
the position of President, International Consumer Affairs Products Division with
Armkel, reporting to the Chief Executive Officer of Armkel, at your current
salary and with benefits substantially the same in the aggregate as under your
current Carter-Wallace plans. In addition, your split-dollar life insurance
arrangement and any cash build-up thereunder would be transferred from
Carter-Wallace to Armkel. We have included a brief benefits summary sheet with
this package, and a complete benefits orientation will take place shortly after
the acquisition. Of course, the terms of this offer may be superseded by any
subsequent employment agreement we enter into.

     As you know, Church & Dwight has been one of the fastest growing consumer
products companies in the United States. We look forward to you joining our team
and believe you will have a successful, rewarding career with Armkel. If you
have any additional questions, please do not hesitate to contact me at (609)
497-7414.

                                        Sincerely,

                                        /s/ Steven P. Cugine

                                        Steven P. Cugine
                                        Vice President, Human Resources

________________________________________________________________________________
          469 North Harrison Street . Princeton, New Jersey 08543-5297
                              Phone: (609) 683-5900

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Mr. Adrian Huns
Page 2

Acceptance of this employment offer is indicated by signing below. Please return
this signed document along with your signed Confidential Information and
Inventions Agreement, Policy Regarding Harassment and Discrimination, and
Personal Business Conduct receipt and acknowledgement forms to me as soon as
possible.

Acceptance:

/s/ Adrian Huns                                                 9/26/01
---------------------------                             ----------------------
Adrian Huns                                             Date

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                                    RECEIPT
                                    -------

     By my signature below, I acknowledge that I have received a copy of Church
& Dwight's "Policy Regarding Harassment and Discrimination". I agree to read it
thoroughly, including the "Complaint Procedure." I also agree that if there is
any provision in the policy that I do not understand, I will seek clarification
from the Human Resources Department or the Law Department.

/s/ ADRIAN J. L. HUNS
----------------------------------
Signature

ADRIAN J. L. HUNS
----------------------------------
Print Name

        9/26/01
----------------------------------
Date

INTERNATIONAL
----------------------------------
Department

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                                    RECEIPT
                                    -------

     By my signature below, I acknowledge that I have received a copy of Church
& Dwight's "Guidelines for Personal Business Conduct of Church & Dwight
Employees". I agree to read it thoroughly. I also agree that if there is any
provision in the policy that I do not understand, I will seek clarification from
the Human Resources Department or the Law Department.

     /s/  ADRIAN J. L. HUNS
------------------------------
Signature

      ADRIAN J. L. HUNS
------------------------------
Print Name

           9/26/01
------------------------------
Date

         INTERNATIONAL
------------------------------
Department

<PAGE>

[LETTERHEAD OF CHURCH & DWIGHT CO., INC.]              [LOGO OF ARM & HAMMER/R/]

               CONFIDENTIAL INFORMATION AND INVENTIONS AGREEMENT
               -------------------------------------------------

Agreement made as of the date set forth below between Church & Dwight Co., Inc.,
herein called the "Company", and the employee named below, herein called the
"Employee".

In consideration of the Employee's employment or continued employment it is
agreed as follows:

1.   The Employee shall keep secret and confidential and shall not disclose or
     use, except in connection with his employment by the Company, any
     information acquired during the course of employment affecting or relating
     to the business of the Company, including without limitation, data related
     to marketing, sales, distribution, production, finance, research and
     development, customers, employees, suppliers, plans, processes, formulae
     and equipment, all of which is deemed to be confidential information. All
     notes, records, sketches or other documents made or compiled during the
     course of employment are the exclusive property of the Company and shall be
     surrendered to the Company upon termination of employment or on demand at
     any time by the Company.

2.   Any and all ideas, inventions, trademarks, discoveries and improvements
     made or conceived by the Employee, whether solely or jointly, during the
     employee's employment whether or not during working hours, that are within
     the scope of the Company's business operations or that relate to the
     business or activities of the Company shall be the exclusive property of
     the Company and shall be promptly disclosed to the Company. The Employee
     assigns and agrees to assign to the Company his entire right, title and
     interest in and to any such ideas, inventions, trademarks, discoveries and
     improvements, and, whenever requested to do so by the Company, at the
     Company's expense, to execute any and all applications, assignments or
     other instruments which the Company deems desirable to apply for and obtain
     United States or foreign patents or to otherwise protect the Company's
     interests.

3.   The Employee represents and covenants that the Employee has not and will
     not disclose to the Company any information which the Employee is not
     legally free to disclose.

4.   The obligations contained in this agreement shall survive termination of
     employment and shall be binding on the Employee's successors,
     representatives and assigns. Employee agrees to disclose the existence of
     this agreement to all future employers, if that employer's business is in
     any way related to or in competition with the business of the Company.

AGREED AND ACCEPTED:                            CHURCH & DWIGHT CO., INC.

/s/ ADRIAN J. L. HUNS                           By: /s/ STEVE P. CUGINE
-----------------------------------                 ---------------------------
Employee Signature

ADRIAN J. L. HUNS                               Title: V.P. Human Resources
-----------------------------------                    ------------------------
(Please Print Name)

9/26/01                                         Date: 9/26/01
-----------------------------------                   -------------------------
Date<PAGE>

                                                                     Exhibit 4.1

                                 GLOBAL SECURITY

                         UNIVERSAL HEALTH SERVICES, INC.

                              6 3/4% NOTES DUE 2011

Principal Amount: $200,000,000                              CUSIP No. 913903AM2

No. R-1

         Unless and until this Security is exchanged in whole or in part for
Securities in definitive form, this Security may not be transferred except as a
whole by The Depository Trust Company, a New York corporation ("DTC" or the
"Depositary"), to a nominee of DTC or by a nominee of DTC to DTC or another
nominee of DTC or by DTC or any nominee to a successor Depositary or a nominee
of any successor Depositary. Unless this certificate is presented by an
authorized representative of DTC to the Issuer or its agent for registration of
transfer, exchange or payment, and any certificate issued is registered in the
name of Cede & Co. or in such other name as is requested by an authorized
representative of DTC (and any payment is made to Cede & Co. or to such other
entity as is requested by an authorized representative of DTC), ANY TRANSFER,
PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS
WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest
herein.

         UNIVERSAL HEALTH SERVICES, INC., a Delaware corporation (the "Issuer"),
for value received, hereby promises to pay to Cede & Co. or registered assigns,
at the agency of the Issuer in the City of New York, New York, the principal sum
of TWO HUNDRED MILLION DOLLARS ($200,000,000) on November 15, 2011, in
immediately available funds in such coin or currency of the United States of
America as at the time of payment shall be legal tender for the payment of
public and private debts, and to pay interest, semiannually on May 15 and
November 15 of each year (each, an "Interest Payment Date"), commencing May 15,
2002, on said principal sum at said office or agency, in like coin or currency,
at the rate per annum specified in the title of this Security, from the most
recent Interest Payment Date to which interest has been paid or, if no interest
has been paid, from November 9, 2001, until payment of said principal sum has
been made or duly provided for; provided, that payment of interest may be made
at the option of the Issuer by check mailed to the address of the person
entitled thereto as such address shall appear on the Security register. The
amount of interest payable on any Interest Payment Date shall be computed on the
basis of a 360-day year of twelve 30-day months. Each payment of interest in
respect of an Interest Payment Date shall include interest accrued through the
day prior to such Interest Payment Date. The interest so payable on any Interest
Payment Date will, subject to certain exceptions provided in the Indenture
referred to on the reverse hereof, be paid to the person in whose name this
Security is registered at the close of business on the May 1 or November 1, as
the case may be, which shall be a Business Day next preceding such Interest
Payment Date.

<PAGE>

         Reference is made to the further provisions of this Security set forth
on the reverse hereof. Such further provisions shall for all purposes have the
same effect as though fully set forth at this place.

         This Security shall not be valid or become obligatory for any purpose
until the certificate of authentication hereon shall have been signed by the
Trustee under the Indenture referred to on the reverse hereof.

<PAGE>

         IN WITNESS WHEREOF, Universal Health Services, Inc. has caused this
instrument to be signed by its duly authorized officers and has caused its
corporate seal to be affixed hereunto or imprinted hereon.

                       UNIVERSAL HEALTH SERVICES, INC.

[SEAL]

                       By: __________________________________________
                           Kirk E. Gorman
                           Senior Vice President and Chief Financial Officer

                       By: __________________________________________
                           Cheryl K. Ramagano
                           Assistant Treasurer

                     TRUSTEE'S CERTIFICATE OF AUTHENTICATION

         This is one of the Securities described in the within-mentioned
Indenture.

Dated: November 9, 2001            BANK ONE TRUST COMPANY, N.A.,
                                     as Trustee

                                   By: _______________________________
                                       Authorized Signatory

<PAGE>

                              [REVERSE OF SECURITY]

                         UNIVERSAL HEALTH SERVICES, INC.

                              6 3/4% NOTES DUE 2011

         This Security is one of a duly authorized issue of unsecured
debentures, notes or other evidence of indebtedness of the Issuer (hereinafter
called the "Securities") of the series hereinafter specified, all issued or to
be issued under and pursuant to an indenture dated as of January 20, 2000
(herein called the "Indenture"), duly executed and delivered by the Issuer to
Bank One Trust Company, N.A., as Trustee (herein called the "Trustee"), to which
Indenture and all indentures supplemental thereto reference is hereby made for a
description of the rights, limitations of rights, obligations, duties and
immunities thereunder of the Trustee, the Issuer and the holders of the
Securities. The Securities may be issued in one or more series, which different
series may be issued in various aggregate principal amounts, may mature at
different times, may bear interest (if any) at different rates, may be subject
to different sinking, purchase or analogous funds (if any) and may otherwise
vary as in the Indenture provided. This Security is one of a series designated
as the 6 3/4% Notes due 2011 of the Issuer.

         The Securities of this series may be redeemed, in whole at any time or
in part from time to time, at the option of the Issuer, at a redemption price
equal to accrued and unpaid interest on the principal amount being redeemed to
the redemption date plus the greater of:

         (a)      100% of the principal amount of the Securities to be redeemed;
                  and

         (b)      the sum of the present values of the remaining scheduled
                  payments of principal and interest on the Securities to be
                  redeemed (not including any portion of such payments of
                  interest accrued to the date of redemption) discounted to the
                  date of redemption on a semiannual basis (assuming a 360-day
                  year consisting of twelve 30-day months) at the Adjusted
                  Treasury Rate, plus 30 basis points.

         "Adjusted Treasury Rate" means, with respect to any date of redemption,
the rate per year equal to the semiannual equivalent yield to maturity of the
Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for that date of redemption.

         "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the remaining
term of the Securities to be redeemed that would be used, at the time of
selection and under customary financial practice, in pricing new issues of
corporate debt securities of comparable maturity to the remaining term of the
Securities.

         "Comparable Treasury Price" means, with respect to any date of
redemption, the average of the Reference Treasury Dealer Quotations for the date
of redemption, after excluding the highest and lowest Reference Treasury Dealer
Quotations, or if the Trustee obtains fewer than three Reference Treasury Dealer
Quotations, the average of all Reference Treasury Dealer Quotations.

<PAGE>

         "Quotation  Agent" means J.P. Morgan  Securities Inc. or another
Reference  Treasury Dealer  appointed by the Issuer.

         "Reference Treasury Dealer" means each of J.P. Morgan Securities Inc.
and Banc of America Securities LLC and their respective successors and any other
primary treasury dealer selected by the Issuer. If any of the foregoing ceases
to be a primary U.S. Government securities dealer in New York City, the Issuer
must substitute another primary treasury dealer.

         "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer and any date of redemption, the average, as determined
by the Trustee, of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Trustee by the Reference Treasury Dealer at 5:00 p.m., New York
City time, on the third Business Day before the date of redemption.

         Notice of any redemption will be mailed at least 30 days but not more
than 60 days before the date of redemption to each Holder of the Securities to
be redeemed. Unless the Issuer defaults in payment of the redemption price, on
and after the date of redemption, interest will cease to accrue on the
Securities or portions of the Securities called for redemption.

         In case an Event of Default with respect to the Securities shall have
occurred and be continuing, the principal hereof may be declared, and upon such
declaration shall become, due and payable, in the manner, with the effect and
subject to the conditions provided in the Indenture.

         The Indenture contains provisions permitting the Issuer and the
Trustee, with the consent of the Holders of not less than a majority in
aggregate principal amount of the Securities at the time Outstanding (as defined
in the Indenture) of all series to be affected (voting as one class), evidenced
as in the Indenture provided, to execute supplemental indentures adding any
provisions to or changing in any manner or eliminating any of the provisions of
the Indenture or of any supplemental indenture or modifying in any manner the
rights of the Holders of the Securities of each such series; provided, however,
that no such supplemental indenture shall (i) change the final maturity of any
Security, or reduce the principal amount thereof or any premium thereon, or
reduce the rate or extend the time of payment of any interest thereon, or reduce
any amount payable on redemption thereof or reduce the amount of the principal
of an Original Issue Discount Security (as defined in the Indenture) payable
upon acceleration thereof or the amount thereof provable in bankruptcy, or
impair or affect the rights of any Holder to institute suit for the payment
thereof, or, if the Securities provide therefor, any right of repayment at the
option of the Holder, without the consent of the Holder of each Security so
affected, or (ii) reduce the aforesaid percentage of Securities, the Holders of
which are required to consent to any such supplemental indenture, without the
consent of the Holder of each Security affected. It is also provided in the
Indenture that, with respect to certain defaults or Events of Default regarding
the Securities of any series, prior to any declaration accelerating the maturity
of such Securities, the Holders of a majority in aggregate principal amount
Outstanding of the Securities of such series (or, in the case of certain
defaults or Events of Default, all or certain series of the Securities) may on
behalf of the Holders of all the Securities of such series (or all or certain
series of the Securities, as the case may be) waive any such past default or
Event of Default and its consequences. The preceding sentence shall not,
however, apply to a default in the payment of

<PAGE>

the principal of or premium, if any, or interest on any of the Securities. Any
such consent or waiver by the Holder of this Security (unless revoked as
provided in the Indenture) shall be conclusive and binding upon such Holder and
upon all future Holders and owners of this Security and any Securities which may
be issued in exchange or substitution herefor, irrespective of whether or not
any notation thereof is made upon this Security or such other Securities.

         No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Issuer, which is
absolute and unconditional, to pay the principal of and any premium and interest
on this Security in the manner, at the respective times, at the rate and in the
coin or currency herein prescribed.

         The Securities are issuable only in registered form, without coupons,
in denominations of $1,000 and any integral multiple thereof, and in book-entry
form. The Securities may be represented by one or more Global Securities (each,
a "Global Security") deposited with the Depositary and registered in the name of
the nominee of the Depositary, with certain limited exceptions. So long as the
Depositary or any successor Depositary or its nominee is the registered Holder
of a Global Security, such successor Depositary or such nominee, as the case may
be, will be considered the sole owner or Holder of the Securities represented by
such Global Security for all purposes under the Indenture and the Securities.
Beneficial interest in the Securities will be evidenced only by, and transfer
thereof will be effected only through, records maintained by DTC and its
participants. Except as provided below, an owner of a beneficial interest in a
Global Security will not be entitled to have Securities represented by such
Global Security registered in such owner's name, will not receive or be entitled
to receive physical delivery of the Securities in certificated form and will not
be considered the owner or Holder thereof under the Indenture.

         No Global Security may be transferred except as a whole by the
Depositary to a nominee of such Depositary or by a nominee of such Depositary to
such Depositary or another nominee of such Depositary or by such Depositary or
any such nominee to a successor Depositary for such series or a nominee of such
successor Depositary. Global Securities are exchangeable for certificated
Securities only if (x) the Depositary notifies the Issuer that it is unwilling
or unable to continue as Depositary for such Global Securities or if at any time
the Depositary ceases to be a clearing agency registered under the Exchange Act
and the Issuer fails within 90 days thereafter to appoint a successor
Depositary, (y) the Issuer in its sole discretion determines that such Global
Securities shall be so exchangeable or (z) there shall have occurred and be
continuing an Event of Default or an event which with the giving of notice or
lapse of time or both would constitute an Event of Default with respect to the
Securities represented by such Global Securities. In such event, the Issuer will
issue Securities in certificated form in exchange for such Global Securities. In
any such instance, an owner of a beneficial interest in the Global Securities
will be entitled to physical delivery in certificated form of Securities equal
in principal amount to such beneficial interest and to have such Securities
registered in its name. Securities so issued in certificated form will be issued
in denominations of $1,000 or any integral multiple thereof, and will be issued
in registered form only, without coupons.

         The Issuer, the Trustee and any authorized agent of the Issuer or the
Trustee may deem and treat the registered Holder hereof as the absolute owner of
this Security (whether or not this Security shall be overdue and notwithstanding
any notation of ownership or other writing

<PAGE>

hereon), for the purpose of receiving payment of, or on account of, the
principal hereof and premium, if any, and subject to the provisions on the face
hereof, interest hereon, and for all other purposes, and neither the Issuer nor
the Trustee nor any authorized agent of the Issuer or the Trustee shall be
affected by any notice to the contrary.

         No recourse under or upon any obligation, covenant or agreement of the
Issuer in the Indenture or any indenture supplemental thereto or in any
Security, or because of the creation of any indebtedness represented thereby,
shall be had against incorporator, stockholder, officer or director, as such, of
the Issuer or of any successor corporation, either directly or through the
Issuer or any successor corporation, under any rule of law, statute or
constitutional provision or by the enforcement of any assessment or by any legal
or equitable proceeding or otherwise, all such liability being expressly waived
and released by the acceptance hereof and as part of the consideration for the
issue hereof.

         The acceptance of this Security shall be deemed to constitute the
consent and agreement of the Holder hereof to all of the terms and provisions of
the Indenture. Terms used herein which are defined in the Indenture shall have
the respective meanings assigned thereto in the Indentures.

         THE INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO CONFLICTS
OF LAW PRINCIPLES THEREOF.

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