Document:

<PAGE>
                                                                    Exhibit 10.6

                                                                 August 27, 2002

Mr. Dennis Haggerty
40 Cross Creek Blvd.
Rochester Hills, MI  48306

Dear Dennis:

This confirms our discussions on the offer of employment, and your acceptance,
on the following terms and conditions:

TITLE. Your title will be Vice President of Supply Chain Management, reporting
directly to me. I will submit your name to the Board of Directors at the next
board meeting for election as an officer of the corporation.

RESPONSIBILITIES. You will be responsible for supply chain management, which
will include internal manufacturing and distribution of products.

BASE SALARY.  Your base salary will be $225,000 per year.

BONUS. Your target bonus opportunity under the company's Management Incentive
Program will be 50% of base salary per year. Your bonus for 2002 will be
prorated.

SIGN-ON BONUS. You will receive a sign-on bonus of $20,000.00 grossed up for
taxes.

SHARE PURCHASE. You will purchase 2,000 shares of common stock of Dayton
Superior Corporation at a price of $27.50 per share. You will complete such
purchase within 30 days after commencing your employment with the company. This
purchase of common stock will be presented to the Board of Directors for
approval.

STOCK OPTIONS. You will receive a grant to acquire 35,000 shares of common stock
in Dayton Superior Corporation at the time you join the company, at a price of
$27.50 per share, subject to the terms of the company's 2000 Stock Option Plan.
This grant of options will be presented to the Board of Directors for its
approval.

CAR ALLOWANCE. You will receive a car allowance of $1,150 per month.

START DATE. Your employment will commence on or about October 1, 2002.

<PAGE>

Mr. Dennis Haggerty, Page 2, August 27, 2002

EMPLOYMENT AGREEMENT. As you understand, your employment with the company is "at
will." However, we will enter into an employment agreement that will provide you
with twelve (12) months of base salary and car allowance payments if your
employment with the company is terminated for any reason other than "for cause,"
as will be further defined in the agreement, within one year from the date you
commence employment with the company.

RELOCATION. You will be eligible to participate in the relocation program for
existing employees.

EMPLOYEE BENEFITS. You will be eligible to participate in the normal Dayton
Superior benefits programs under the terms of the plan documents. For your
medical and health benefits, the company will reimburse you monthly for private
health and medical coverage (COBRA, etc.) until such time as you are eligible to
participate in the Dayton Superior programs.

VACATION. You will receive four (4) weeks of vacation each year. Your vacation
for 2002 will be prorated.

DRUG SCREEN. This offer is contingent upon you passing a pre-employment drug
screen. You should contact Doug Good at (937) 866-0711, extension 260, to
arrange for this test.

Dennis, I'm excited about you joining our team and look forward to working with
you on the many challenges we will be facing in the future. Please sign the
enclosed copy of this letter indicating your acceptance of these terms. Please
fax the signed copy to my attention at (937) 428-9115 and return the original in
the enclosed envelope.

                                    Sincerely,

                                    DAYTON SUPERIOR CORPORATION

                                    Stephen R. Morrey
                                    President and Chief Executive Officer
SRM:ll
Enclosures

Accepted by:

/s/ Dennis Haggerty                      August 28, 2002
-----------------------------            ------------------------------
Dennis Haggerty                          Date<PAGE>
                                                                 Exhibit (10)(d)
                            THE LUBRIZOL CORPORATION
                           EXCESS DEFINED BENEFIT PLAN
                              (As Amended 9/23/02)

         The Lubrizol Corporation hereby establishes, effective as of January 1,
1986, The Lubrizol Corporation Excess Defined Benefit Plan (the "Plan") for the
purpose of providing supplemental benefits to certain employees, as permitted by
Section 3(36) of the Employee Retirement Income Security Act of l974.

                                    ARTICLE I

                          DEFINITIONS AND CONSTRUCTION

         1.1 DEFINITIONS. For the purposes hereof, the following words and
phrases shall have the meanings indicated, unless a different meaning is plainly
required by the context:

                  (a) CODE. the term "Code" shall mean the Internal Revenue Code
         as amended from time to time. Reference to a section of the Code shall
         include such section and any comparable section or sections of any
         future legislation that amends, supplements, or supersedes such
         section.

                  (b) COMPANY. The term "Company" shall mean The Lubrizol
         Corporation, an Ohio corporation, its corporate successors and the
         surviving corporation resulting from any merger of The Lubrizol
         Corporation with any other corporation or corporations, and any
         subsidiaries of The Lubrizol Corporation which adopt the Plan.

                  (c) LUBRIZOL PENSION PLAN. The term "Lubrizol Pension Plan"
         shall mean The Lubrizol Corporation Revised Pension Plan as the same
         shall be in effect on the date of a Participant's retirement, death, or
         other termination of employment.

                  (d) PARTICIPANT. Effective June 22, 1992, the term
         "Participant" shall mean any person employed by the Company who is
         listed on Appendix A attached hereto, or who is designated by the Board
         of Directors as an officer for the purposes of Section 16 of the
         Securities Exchange Act of 1934, or whose benefits under the Lubrizol
         Pension Plan are limited by the application of Section 401(a)(17) of
         the Internal Revenue Code of 1986, as amended.

                  (e) PLAN. The term "Plan" shall mean the excess defined
         benefit pension plan as set forth herein, together with all amendments
         hereto, which Plan shall be called "The Lubrizol Corporation Excess
         Defined Benefit Plan."

                  (f) TRUST. The term "Trust" shall mean The Lubrizol
         Corporation Excess Defined Benefit Plan Trust established pursuant to
         the Trust Agreement.

                  (g) TRUST AGREEMENT. The term "Trust Agreement" shall mean The
         Lubrizol Corporation Excess Defined Benefit Plan Trust Agreement.

         1.2. ADDITIONAL DEFINITIONS. All other words and phrases used herein
shall have the meanings given them in the Lubrizol Pension Plan, unless a
different meaning is clearly required by the context.

<PAGE>

                                   ARTICLE II

                          SUPPLEMENTAL PENSION BENEFIT

         2.1 ELIGIBILITY. Effective January 1, 1997, A Participant who retires,
dies, or otherwise terminates his employment with the Company and its
subsidiaries and

                  (a) whose benefits under the Lubrizol Pension Plan are limited
         by the provisions of Section 401(a)(17) or 415 of the Code,

                  (b) who either was a Participant on January 1, 1989 or had
         attained age 55 on January 1, 1989, and thereafter became a
         Participant, and whose benefits under the Lubrizol Pension Plan are
         curtailed due to the revision of the pension benefit formula, effective
         as of January 1, 1989, to comply with the requirements of the Tax
         Reform Act of 1986, as amended,

                  (c) who participated in The Lubrizol Corporation Deferred
         Compensation Plan for Officers (which was adopted effective July 25,
         1994), or

                  (d) who participated in The Lubrizol Corporation Executive
         Council Deferred Compensation Plan (which was adopted effective January
         1, 1997)

shall be eligible for a supplemental pension benefit determined in accordance
with the provisions of Section 2.2.

         2.2 AMOUNT. Effective January 1, 1997, subject to the provisions of
Article III, the monthly supplemental pension benefit payable to an eligible
Participant shall be an amount which when added to the monthly pension payable
to such Participant under the Lubrizol Pension Plan (prior to any reduction
applicable to an optional method of payment) equals the monthly pension benefit
which would have been payable under the Lubrizol Pension Plan (prior to any
reduction applicable to an optional method of payment and adjusted for any
amount payable under The Lubrizol Corporation Excess Defined Contribution Plan
which is attributable to The Lubrizol Corporation Employees' Profit-Sharing Plan
and which would have affected the benefit that the Participant would have
received under the Lubrizol Pension Plan had it been payable from The Lubrizol
Corporation Employees' Profit-Sharing Plan) if the limitations of Section
401(a)(17) and 415 of the Code were not in effect and, (if he is a Participant
described in Section 2.1(ii)), his benefits had not been curtailed due to the
revision of the Lubrizol Pension Plan effective as of January 1989, to comply
with the provisions of the Tax Reform Act of 1986, as amended, and, (if he is a
Participant described in Section 2.1(iii)), if he did not participate in The
Lubrizol Corporation Deferred Compensation Plan for Officers (which was adopted
effective July 25, 1994) or in The Lubrizol Corporation Executive Council
Deferred Compensation Plan (which was adopted effective January 1, 1997).

         2.3 PAYMENT. The terms of payment of the supplemental pension benefit
shall be identical to those specified in the Lubrizol Pension Plan for the type
of benefit the Participant receives under the Lubrizol Pension Plan.

         2.4 VESTING. Each Participant as of December 31, 1993, shall be 100
percent vested in his supplemental pension benefit determined in accordance with
the provisions of Section 2.2. Each new Participant after December 31, 1993,
shall be vested in his supplemental pension

<PAGE>

benefit under this Plan as determined in accordance with the vesting provisions
of the Lubrizol Pension Plan.

                                   ARTICLE III

                               PAYMENT OF BENEFITS

         3.1  PAYMENT TO PARTICIPANT.  (Effective November 27, 1995)

                  (a) Each Participant who terminates employment with the
         Company and its related corporations shall receive payment of his
         supplemental pension benefit under the Plan determined as of his date
         of termination of employment in the standard form of benefit of a
         monthly retirement benefit commencing within 30 days following
         employment termination and payable to such Participant for his lifetime
         following such employment termination, with the continuance to his
         Beneficiary of such amount after his death for the remainder, if any,
         of the 120-month term that commenced with the date as of which the
         first payment of such monthly benefit is made, and with any such
         monthly benefits remaining unpaid upon the death of the survivor of the
         Participant and his Beneficiary to be made to the estate of such
         survivor.

                  (b) Participants may instead elect within a 60 day period
         commencing 90 days prior to employment termination to receive the
         actuarial equivalent of the standard form of benefit determined under
         paragraph (a), on the date of employment termination, in accordance
         with any one of the following options:

                           (i) for Participants hired prior to February 1, 1984,
                  a single lump-sum payment payable within 30 days following
                  employment termination;

                           (ii) effective October 1, 2000, for Participants
                  hired prior to February 1, 1984, a single lump-sum payment
                  payable within 30 days following the end of the calendar year
                  in which the Participant's employment terminated. Interest on
                  the lump-sum deferral shall accrue and be paid with the
                  lump-sum; such interest to be computed at the applicable
                  interest rate, as defined in Section 417(e)(3)(A)(ii)(II) of
                  the Code, in effect on the date of the employment termination.

                           (iii) a reduced monthly retirement benefit commencing
                  within 30 days following employment termination and payable to
                  such Participant for his lifetime following such employment
                  termination, with the continuance of a monthly benefit equal
                  to fifty percent (50%) of such reduced amount after his death
                  to the Participant's Beneficiary during the lifetime of the
                  Beneficiary, provided that such Beneficiary is living at the
                  time of such Participant's employment termination and survives
                  such Participant;

                           (iv) a reduced monthly retirement benefit commencing
                  within 30 days following employment termination and payable to
                  such Participant during his lifetime following his
                  termination, with the continuance of a monthly benefit equal
                  to one hundred percent (100%) of such reduced amount after his
                  death to the Participant's Beneficiary during the lifetime of
                  the Beneficiary, provided such Beneficiary is living at the
                  time of such Participant's termination and survives such
                  Participant.

<PAGE>

         Such optional forms of payment described above shall be calculated
using the same actuarial factors and interest rates used under The Lubrizol
Corporation Pension Plan (or its successor) as in effect on the date of
employment termination; provided, however, that for any person who was a
Participant as of December 31, 1993, who elects to have his supplemental pension
benefit paid in a single lump-sum payment, the interest rate used to discount
the portion of the Participant's supplemental pension benefit which represents
his accrued benefit as of December 31, 1993, shall be the arithmetic average of
the 7-day compound yield rates for the six full calendar months prior to the
month of termination as published in Donoghue's Tax-Free MONEY FUND AVERAGE
which is reported weekly in BARRON'S; provided further that such rate with
respect to any month shall be the rate reported in the first issue of BARRON'S
published during such month.

         Notwithstanding the foregoing provisions of the Plan to the contrary,
if the present actuarial value of any retirement benefit or survivor benefit
under the Plan to any person, determined as described above, is less than
$25,000, such benefit shall be paid in a single lump-sum payment to such person
within 30 days following employment termination.

         3.2 PAYMENT IN THE EVENT OF DEATH PRIOR TO COMMENCEMENT OF
DISTRIBUTION. If a Participant dies prior to commencement of benefits under the
Plan, his surviving spouse, if any, shall be eligible for a survivor benefit
which is equal to one-half of the reduced monthly benefit the Participant would
have received under the Plan if the Participant had retired on the day before
his death and had elected to receive his benefit under the Lubrizol Pension Plan
in a 50 percent joint and survivor annuity form. In making the determinations
and reductions required in this Section 3.2, the Company shall apply the
assumptions then in use under the Lubrizol Pension Plan. For purposes hereof, a
surviving spouse shall only be eligible for a benefit under this Section 3.2, if
such spouse had been married to the deceased Participant for at least one year
as of the date of the Participant's death.

         3.3 SPECIAL FORM OF BENEFIT FOR E. VICTOR LUOMA. Notwithstanding the
first sentence of Section 3.1, E. Victor Luoma may elect prior to his retirement
or other termination of employment to receive payment of his supplemental
pension benefit under the Plan in the form of a single sum amount, determined
and payable in accordance with the second and third sentences of Section 3.1.

         3.4 LUMP SUM FORM OF BENEFIT FOR ROGER Y. K. HSU. Effective January 1,
1996, notwithstanding the provisions of Section 3.1(b), Roger Y. K. Hsu shall
receive payment of his supplemental pension benefit under the Plan in the form
of a single sum amount.

                                   ARTICLE IV

                       ADMINISTRATION (Effective 9/23/02)

         4.1 AUTHORITY OF THE COMPANY. The Company shall be responsible for the
general administration of the Plan, for carrying out the provisions hereof, and
for making, or causing the Trust to make, any required supplemental benefit
payments. The Company shall have all such powers as may be necessary to carry
out the provisions of the Plan, including the power to determine all questions
relating to eligibility for and the amount of any supplemental pension benefit
and all questions pertaining to claims for benefits and procedures for claim
review; to resolve all other questions arising under the Plan, including any
questions of construction; and

<PAGE>

to take such further action as the Company shall deem advisable in the
administration of the Plan. The Company may delegate any of its powers,
authorities, or responsibilities for the operation and administration of the
Plan to any person or committee so designated in writing by it and may employ
such attorneys, agents, and accountants as it may deem necessary or advisable to
assist it in carrying out its duties hereunder. The actions taken and the
decisions made by the Company hereunder shall be final and binding upon all
interested parties.

         4.2 CLAIMS REVIEW PROCEDURE. The Company shall notify the person who
files a claim for benefits (hereinafter referred to as the "Claimant") of the
Plan's adverse benefit determination within a reasonable period of time, but not
later than 90 days after the receipt of the claim by the Plan, unless the
Company determines that special circumstances require an extension of time for
processing the claim. If the Company determines that special circumstances
require an extension of time for processing is required, written notice of the
extension shall be furnished to the Claimant prior to the termination of the
initial 90-day period. In no event shall such extension exceed a period of 90
days from the end of such initial period. The extension notice shall indicate
the special circumstances requiring an extension of time and the date by which
the Plan expects to render the benefit determination. Whenever the Company
decides for whatever reason to deny, whether in whole or in part, a claim for
benefits filed by any Claimant, the Company shall transmit to the Claimant a
written notice of the Company's decision, which shall be written in a manner
calculated to be understood by the Claimant and contain a statement of the
specific reasons for the denial of the claim, reference to the specific Plan
provisions on which the determination was based, a description of any additional
material or information necessary for the Claimant to perfect the claim and an
explanation of why such material or information is necessary, a description of
the Plan's review procedures and the time limits applicable to such procedures,
include a statement of the Claimant's right to bring civil action under Section
502(a) ERISA following an adverse benefit determination on review. Within 60
days of the date on which the Claimant receives such notice, he or his
authorized representative may request that the claim denial be reviewed by
filing with the Company a written request therefor, which request shall contain
the following information:

               (a) the date on which the Claimant's request was filed with the
               Company; provided, however, that the date on which the Claimant's
               request for review was in fact filed with the Company shall
               control in the event that the date of the actual filing is later
               than the date stated by the Claimant pursuant to this paragraph
               (a);

               (b) the specific portions of the denial of his claim which the
               Claimant requests the Company to review;

               (c) a statement by the Claimant setting forth the basis upon
               which he believes the Company should reverse the Company's
               previous denial of his claim for benefits and accept his claim as
               made; and

               (d) any written comments, documents, records and other
               information which the Claimant desires the Company to examine in
               its consideration of his position as stated pursuant to paragraph
               (c).

Claimant shall be provided, upon request and free of charge, reasonable access
to, and copies of, all documents, records, and other information relevant to the
Claimant's claim for benefits. The review of the claim will take into account
all comments, documents, records and other

<PAGE>

information submitted by the Claimant relating to the claim, without regard to
whether such information was submitted or considered in the initial benefit
determination. Within no later than 60 days of the date determined pursuant to
paragraph (a) of this Section 4.2, the Company shall notify Claimant of the
Plan's benefit determination, unless the Company determines that special
circumstances require an extension of time for processing the claim. If the
Company determines that an extension of time for processing is required, written
notice of the extension will be furnished to the Claimant prior to the
termination of the initial 60-day period. In no event shall such extension
exceed a period of 60 days from the end of the initial period. The extension
notice shall indicate the special circumstances requiring an extension of time
and the date by which the Plan expects to render the determination on review.
The Company shall provide the Claimant with a written notification of the Plan's
benefit determination on review, written in a manner calculated to be understood
by the Claimant, including the reasons and Plan provisions upon which its
decision was based, a statement that the Claimant is entitled to receive, upon
request and free of charge, reasonable access to, and copies of, all documents,
records and other information relevant to the Claimant's claim for benefits, and
a statement of the Claimant's right to bring an action under Section 502(a) of
ERISA.

                                    ARTICLE V

                            AMENDMENT AND TERMINATION

         The Company reserves the right to amend or terminate the Plan in whole
or in part at any time and to suspend operation of the Plan, in whole or in
part, at any time, by resolution or written action of its Board of Directors or
by action of a committee to which such authority has been delegated by the Board
of Directors; provided, however, that no amendment shall result in the
forfeiture or reduction of the interest of any Participant or person claiming
under or through any one or more of them pursuant to the Plan. Any amendment of
the Plan shall be in writing and signed by authorized individuals.

                                   ARTICLE VI

                                  MISCELLANEOUS

         6.1 NON-ALIENATION OF RETIREMENT RIGHTS OR BENEFITS. No Participant
shall encumber or dispose of his right to receive any payments hereunder, which
payments or the right thereto are expressly declared to be non-assignable and
non-transferable. If a Participant attempts to assign, transfer, alienate or
encumber his right to receive any payment hereunder or permits the same to be
subject to alienation, garnishment, attachment. execution, or levy of any kind,
then thereafter during the life of such Participant, and also during any period
in which any Participant is incapable in the judgment of the Company of
attending to his financial affairs, any payments which the Company is required
to make hereunder may be made, in the discretion of the Company, directly to
such Participant or to any other person for his use or benefit or that of his
dependents, if any, including any person furnishing goods or services to or for
his use or benefit or the use or benefit of his dependents, if any. Each such
payment may be made without the intervention of a guardian, the receipt of the
payee shall constitute a complete acquittance to the Company with respect
thereto, and the Company shall have no responsibility for the proper allocation
thereof.

<PAGE>

         6.2 PLAN NON-CONTRACTUAL. Nothing herein contained shall be construed
as a commitment or agreement on the part of any person employed by the Company
to continue his employment with the Company, and nothing herein contained shall
be construed as a commitment on the part of the Company to continue the
employment or the annual rate of compensation of any such person for any period,
and all Participants shall remain subject to discharge to the same extent as if
the Plan had never been established.

         6.3 TRUST. In order to provide a source of payment for its obligations
under the Plan, the Company has established the Trust, the terms of which are
governed by the Trust Agreement.

         6.4 INTEREST OF A PARTICIPANT. Subject to the provisions of the Trust
Agreement, the obligation of the Company under the Plan to provide a Participant
with a supplemental pension benefit constitutes the unsecured promise of the
Company to make payments as provided herein, and no person shall have any
interest in, or a lien or prior claim upon, any property of the Company.

         6.5 CONTROLLING STATUS. No Participant shall be eligible for a benefit
under the Plan unless such Participant is a Participant on the date of his
retirement, death, or other termination of employment.

         6.6 CLAIMS OF OTHER PERSONS. The provisions of the Plan shall in no
event be construed as giving any person, firm or corporation any legal or
equitable right as against the Company, its officers, employees, or directors,
except any such rights as are specifically provided for in the plan or are
hereafter created in accordance with the terms and provisions of the Plan.

         6.7 SEVERABILITY. The invalidity or unenforceability of any particular
provision of the Plan shall not affect any other provision hereof, and the Plan
shall be construed in all respects as if such invalid or unenforceable provision
were omitted herefrom.

         6.8 GOVERNING LAW. The provisions of the Plan shall be governed and
construed in accordance with the laws of the State of Ohio.

<PAGE>

                                   APPENDIX A
                                       TO
                            THE LUBRIZOL CORPORATION
                           EXCESS DEFINED BENEFIT PLAN

Participants(1)                                           Effective Date
---------------                                           --------------

1. W. G. Bares                                            December 31, 1986
2. G. R. Hill                                             December 31, 1986
3. J. R. Ahern                                            April 1, 1990
4. J. W. Bauer                                            April 27, 1992
5. S. F. Kirk                                             April 26, 1993
6. Y. Le Couedic                                          April 26, 1993
7. J. E. Hodge                                            April 26, 1993
8. M. W. Meister                                          April 26, 1993
9. S. A. Di Biase                                         April 26, 1993
10. G. P. Lieb                                            April 25, 1994
11. L. M. Reynolds                                        April 24, 1995
12.  C. P. Cooley                                         April 1, 1998
13.  D. W. Bogus                                          April 1, 2000
14.  J. L. Hambrick                                       May 1, 2000
15.  G. R. Lewis                                          April 23, 2001
16.  R. S. Potter                                         September 4, 2001
17.  J. Wanstreet                                         April 22, 2002

Former Participants(2)
---------------------
1. P. L. Krug (R)
2. W. T. Beargie (R)
3. W. D. Manning (R)
4. R. W. Scher (R)
5. J. P. Arzul (D)
6. J. R. Cooper (R)
7. J. I. Rue (R)
8. R. J. Senz (T)
9. E. V. Luoma (R)
10. R. Y. K. Hsu (R)
11. L. E. Coleman (D)
12. J. G. Bulger (R)
13.  D. A. Muskat (R)
14.  W. R. Jones (R)
15.  R. A. Andreas (R)
16.  J. A. Thomas (R)
17.  K. H. Hopping (R)
18.  R. D. Robins (R)

--------
(1) This listing of Participants is limited to those Participants who are also
officers for purposes of Section 16 of the Securities Exchange Act of 1934.
(2) R = Retired, D = Deceased, T = Terminated.

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