Document:

<PAGE>

                                                                   Exhibit 10.16

                             English translation of
                      AMENDMENT TO THE EMPLOYMENT CONTRACT

BETWEEN:

      Autocam France, a limited liability company with capital of #eu#
2,200,000, having its registered office at Zone Industrielle des Pchons, 294
Promenade de l'Arve, 74300 Thiez, registered in the Registry of Companies and
Commerce of Bonneville under no. B 420 291 411, represented by John C. Kennedy,
duly authorized,

                                                      hereinafter, "the Company"

                                                              in the first part,

                                                                             AND

      Bruno Le Sech, a French national, born on June 25, 1962 at Saint Germain
en Laye (78), residing at La Boulaie, 72100 Beaufray,

                                                     hereinafter, the "Employee"

                                                             in the second part.

This amendment is intended to clarify and complete the contents of Article 5.4
of the employment contract for Mr. Le Sech concerning the reimbursement of
various costs by SARL Autocam France. It is agreed that SARL Autocam France will
pay all relocation costs for Mr. Le Sech, including:

      -     costs of lodging and food at Marnaz, as well as weekly travel costs
            to visit his family so long as they have not yet moved, until July
            31, 2002 at the latest;

      -     moving costs, on presentation of appropriate receipts;

      -     realtors costs, on presentation of appropriate receipts; and

      -     notarial fees, including the provisions for purchase costs and a
            mortgage, on presentation of appropriate receipts.

Done in three copies at Thyez
June 4, 2002

For Autocam France SARL
/sgn/                                                /sgn/
John Kennedy                                         Bruno Le Sech
Manager<PAGE>

                                                                   Exhibit 10.17

English Translation of

LEAN MANAGEMENT

SERVICES AGREEMENT NR._001/98

DATE: JANUARY 1, 1998

By this private instrument, LEAN MANAGEMENT CONSULTORIA EMPRESARIAL S/C LTDA.,
with headquarters at Rua Joao Pires de Araujo, 200, suite 01, Centro, in the
city of Juquitiba, State of Sao Paulo, enrolled with federal taxpayers' registry
(CGC/MF) under # 02.474.502/0001-95, herein represented by Mr. Eduardo Renner de
Castilho, quotaholder, hereinafter simply referred to as CONTRACTED PARTY, and
AUTOCAM DO BRASIL USINAGEM LTDA., with headquarters at Avenida Romualdo de Souza
Brito, 2.060, in the city of Pinhal, State of Sao Paulo, enrolled with federal
taxpayers' registry (CGC/MF) under # 00.025.160/0001-95, with branches in the
city of Campinas, State of Sao Paulo, at Rua Estacio de Sa # 1.042, enrolled
with federal taxpayers' registry (CGC/MF) under # 00.025.160/0002-76 and in the
city of Boituva, State of Sao Paulo, at Rodovia de Acesso Boituva Porto Feliz,
km 12, enrolled with federal taxpayers' registry (CGC/MF) under #
00.025.160/0003-57, herein represented by Ms. Leila Teresinha Gozzi,
Administrative Manager, hereinafter simply referred to as CONTRACTING PARTY,
resolve, in consideration to their mutual covenants, to enter into the present
agreement which shall be governed by the following terms and conditions:

                                    CLAUSE I
                                     OBJECT

Article 1. The object of this agreement is the rendering of Advisory Services in
the Operational Management of AUTOCAM DO BRASIL'S industrial plants, which may,
or not, be executed within its premises.

                                    CLAUSE II
                       TERM FOR THE RENDERING OF SERVICES

Article 2. The services shall be rendered as of January 1, 1998 for an
indeterminate term. Both parties may terminate the agreement by giving a 90-days
prior written notice to the other party.

                                   CLAUSE III
                     ACCESS, OCCUPATIONAL HEALTH AND SAFETY

Article 3. The CONTRACTING PARTY guarantees to the CONTRACTED PARTY the access
to its premises, as well as the access to all information regarding the
rendering of services described in this agreement.

<PAGE>

LEAN MANAGEMENT

SERVICES AGREEMENT NR._001/98

DATE: JANUARY 1, 1998

Article 4. During the execution of the services, the CONTRACTED PARTY's
employees shall observe the Safety Guidelines and the demeanor prescribed by
AUTOCAM DO BRASIL, the CONTRACTED PARTY being entirely responsible for any
accident or incident that may occur due to non-compliance of the above referred
Rules.

                                    CLAUSE IV
                                  PROJECT TEAM

Article 5. The partner in charge of the project, on behalf of the CONTRACTED
PARTY, shall be Mr. Eduardo Renner de Castilho. Messrs. Caetano Roberto
Ferraiolo, Luiz Fernandes Aparecido Goncalves and Walter Wincker shall also be
part of the team and shall carry out the managerial advisory tasks in the
Boituva unit and in the Departments of Engineering and Thermic Treatment,
respectively.

                                    CLAUSE V
                                 CONFIDENTIALITY

Article 6. All confidential information possibly transmitted to the CONTRACTED
PARTY shall be treated with maximum confidentiality for an indeterminate term,
according to the ethical standards that guide the parties' professional conduct.
Documents from AUTOCAM DO BRASIL provided, temporarily, for the CONTRACTED
PARTY, shall be controlled and tracked by specific procedures and restricted
access. All documents originated from this project shall be considered as
property of AUTOCAM DO BRASIL and shall not be used by the CONTRACTED PARTY
without prior authorization from the CONTRACTING PARTY.

Article 7. Both parties, by themselves and on behalf of their representatives,
herein undertake to inform their employees on the conduct to be observed
concerning the confidentiality provisions.

                                    CLAUSE VI
                           SOCIAL SECURITY OBLIGATIONS

Article 8. The CONTRACTED PARTY is solely responsible for any and all labor and
social security obligations as well as any other legal obligation concerning the
advisors, quotaholders, and/or subcontracted parties.

<PAGE>

LEAN MANAGEMENT

SERVICES AGREEMENT NR._001/98

DATE: JANUARY 1, 1998

                                   CLAUSE VII
                           JOINT AND SEVERAL LIABILITY

Article 9. This agreement shall remain in full force and effect regardless of
the parties being subject to any merger, amalgamation, spin-off or any kind of
corporate restructuring, provided that such party gives immediate notice of any
such events to the other party, and informs any actual or potential successors
of the existence of this agreement and its amendments, if any, so as to maintain
the compliance of all its terms and conditions.

                                   CLAUSE VIII
                          ADMINISTRATIVE RESPONSIBILITY

Article 10. Any of the quotaholders and/or employees of the CONTRACTED PARTY may
undertake obligations usually inherent to management, as long as necessary legal
documents for such purpose are granted by the CONTRACTING PARTY.

                                    CLAUSE IX
                                     PAYMENT

Article 11. The monthly price of the advisory services rendered by each advisor
of the CONTRACTED PARTY shall be as follows:

EDUARDO RENNER DE CASTILHO - US$ 22,916.67 (twenty two thousand, nine hundred
and sixteen dollars and sixty seven cents) - (US$ 275,000 per year)

CAETANO ROBERTO FERRAIOLO - R$ 9,180.00 (nine thousand, one hundred and eighty
reais)

LUIZ FERNANDES APARECIDO GONCALVES - R$ 9,180.00 (nine thousand, one hundred
eighty reais)

WALTER WINCKER - R$ 7,135.00 (seven thousand, one hundred and thirty five reais)

Article 12. The amounts due to each advisor shall be readjusted every year
according to the IGPM index (Brazilian General Index of Market Prices) or at any
other periodicity agreed upon by the CONTRACTING PARTY, exception made to Mr.
Eduardo Renner de Castilho whose amount is fixed in US commercial dollars.

<PAGE>

LEAN MANAGEMENT

SERVICES AGREEMENT NR._001/98

DATE: JANUARY 1, 1998

                                    CLAUSE X
                                      VENUE

Article 13. Any disputes arising under this agreement shall be settled before
the courts of the City of Campinas, State of Sao Paulo, to the exclusion of all
other courts, however privileged they may be.

In witness whereof, the parties have executed this Agreement in three
counterparts of identical form and content, in the presence of the 2 (two)
witnesses below.

Campinas, January 1, 1998

AUTOCAM DO BRASIL USINAGEM LTDA.
Name of the legal representative: LEILA TERESINHA GOZZI
                                  ADMINISTRATIVE MANAGER

LEAN MANAGEMENT CONSULTORIA GERENCIAL LTDA.(1)
Name of the legal representative: EDUARDO RENNER DE CASTILHO
                                  QUOTAHOLDER

WITNESSES:

1 - Illegible Signature
Name: Elaine C. Nunes Trofino
ID: 21494157

2 - Illegible Signature
Name: Jose Roberto Boscolo
ID: 762507-9

-------------
(1) Please notice that the Contracted Party's name is LEAN MANAGEMENT
CONSULTORIA EMPRESARIAL S/C LTDA., and not LEAN MANAGEMENT CONSULTORIA GERENCIAL
LTDA.<PAGE>
                                                                Exhibit 10.18

English Translation of

LEAN MANAGEMENT

AMENDMENT TO THE SERVICES AGREEMENT NR._001/98 - VERSION 2

DATE: JANUARY 1, 2000

By this private instrument, LEAN MANAGEMENT CONSULTORIA EMPRESARIAL S/C LTDA.,
with headquarters at Rua Joao Pires de Araujo, 200, sala 01, Centro, in the city
of Juquitiba, State of Sao Paulo, enrolled with federal taxpayers' registry
(CGC/MF) under # 02.474.502/0001-95, herein represented by Mr. Eduardo Renner de
Castilho, quotaholder, hereinafter simply referred to as CONTRACTED PARTY, and
AUTOCAM DO BRASIL USINAGEM LTDA., with headquarters at Avenida Romualdo de Souza
Brito, 2.060, in the city of Pinhal, State of Sao Paulo, enrolled with federal
taxpayers' registry (CGC/MF) under # 00.025.160/0001-95, with branches in the
city of Campinas, State of Sao Paulo, at Rua Estacio de Sa # 1.042, enrolled
with federal taxpayers' registry (CGC/MF) under # 00.025.160/0002-76 and in the
city of Boituva, State of Sao Paulo, at Rodovia de Acesso Boituva Porto Feliz,
km 12, enrolled with federal taxpayers' registry (CGC/MF) under #
00.025.160/0003-57, herein represented by Ms. Leila Teresinha Gozzi,
Administrative Manager, hereinafter simply referred to as CONTRACTING PARTY,
resolve, in consideration to their mutual covenants, the following:

    -    Clause IV is hereby amended to withdraw Mr. Walter Wincker from the
         team.

    -    Clause IX is hereby amended to withdraw Mr. Walter Wincker from the
         employees' chart.

In view of the amendments above, the parties agree to consolidate the content of
this agreement, which shall read as follows:

                                    CLAUSE I
                                     OBJECT

Article 1. The object of this agreement is the rendering of Advisory Services in
the Operational Management of AUTOCAM DO BRASIL industrial plants, which may, or
not, be executed within its premises.

                                    CLAUSE II
                       TERM FOR THE RENDERING OF SERVICES

Article 2. The services shall be rendered from January 1, 1998 for an
indeterminate term. Both parties may terminate the agreement by giving prior
90-days written notice to the other party.

<PAGE>

LEAN MANAGEMENT

AMENDMENT TO THE SERVICES AGREEMENT NR._001/98 - VERSION 2

DATE: JANUARY 1, 2000

                                   CLAUSE III
                     ACCESS, OCCUPATIONAL HEALTH AND SAFETY

Article 3. The CONTRACTING PARTY guarantees to the CONTRACTED PARTY the access
to its premises, as well as the access to all information regarding the
rendering of services described in this agreement.

Article 4. During the execution of the services, the CONTRACTED PARTY's
employees shall observe the Safety Guidelines and the demeanor prescribed by
AUTOCAM DO BRASIL, the CONTRACTED PARTY being entirely responsible for any
accident or incident that may occur due to non-compliance of the above referred
Rules.

                                    CLAUSE IV
                                  PROJECT TEAM

Article 5. The partner in charge of the project, on behalf of the CONTRACTED
PARTY, shall be Mr. Eduardo Renner de Castilho. Messrs. Caetano Roberto
Ferraiolo and Luiz Fernandes Aparecido Goncalves shall also be part of the team
and shall carry out the managerial advisory tasks in the Boituva unit and in the
Departments of Engineering and Thermic Treatment, respectively.

                                    CLAUSE V
                                 CONFIDENTIALITY

Article 6. All confidential information possibly transmitted to the CONTRACTED
PARTY shall be treated with maximum confidentiality for an indeterminate term,
according to the ethical standards that guide the parties' professional conduct.
Documents from AUTOCAM DO BRASIL provided, temporarily, for the CONTRACTED
PARTY, shall be controlled and tracked by specific procedures and restricted
access. All documents originated from this project shall be considered as
property of AUTOCAM DO BRASIL and shall not be used by the CONTRACTED PARTY
without prior authorization from the CONTRACTING PARTY.

Article 7. Both parties, by themselves and on behalf of their representatives,
herein undertake to inform their employees on the conduct to be observed
concerning the confidentiality provisions.

<PAGE>

LEAN MANAGEMENT

AMENDMENT TO THE SERVICES AGREEMENT NR._001/98 - VERSION 2

DATE: JANUARY 1, 2000

                                    CLAUSE VI
                           SOCIAL SECURITY OBLIGATIONS

Article 8. The CONTRACTED PARTY is solely responsible for any and all labor and
social security obligations as well as any other legal obligation concerning the
advisors, quotaholders, and/or subcontracted parties.

                                   CLAUSE VII
                           JOINT AND SEVERAL LIABILITY

Article 9. This agreement shall remain in full force and effect regardless of
the parties being subject to any merger, amalgamation, spin-off or any kind of
corporate restructuring, provided that such party gives immediate notice of any
such events to the other party, and informs any actual or potential successors
of the existence of this agreement and its amendments, if any, so as to maintain
the compliance of all its terms and conditions.

                                   CLAUSE VIII
                          ADMINISTRATIVE RESPONSIBILITY

Article 10. Any of the quotaholders and/or employees of the CONTRACTED PARTY may
undertake obligations usually inherent to management, as long as necessary legal
documents for such purpose are granted by the CONTRACTING PARTY.

                                    CLAUSE IX
                                     PAYMENT

Article 11. The monthly price of the advisory services rendered by each advisor
of the CONTRACTED PARTY shall be as follows:

EDUARDO RENNER DE CASTILHO - US$ 22,916.67 (twenty two thousand, nine hundred
and sixteen dollars and sixty seven cents) - (US$ 275,000 per year)

CAETANO ROBERTO FERRAIOLO - R$ 9,180.00 (nine thousand, one hundred and eighty
reais)

LUIZ FERNANDES APARECIDO GONCALVES - R$ 9,180.00 (nine thousand, one hundred
eighty reais)

<PAGE>

LEAN MANAGEMENT

AMENDMENT TO THE SERVICES AGREEMENT NR._001/98 - VERSION 2

DATE: JANUARY 1, 2000

Article 12. The amounts due to each advisor shall be readjusted every year
according to the IGPM index (Brazilian General Index of Market Prices) or at any
other periodicity agreed upon by the CONTRACTING PARTY, exception made to Mr.
Eduardo Renner de Castilho whose amount is fixed in US commercial dollars.

                                    CLAUSE X
                                      VENUE

Article 13. Any disputes arising under this agreement shall be settled before
the courts of the City of Campinas, State of Sao Paulo, to the exclusion of all
other courts, however privileged they may be.

In witness whereof, the parties have executed this Agreement in three
counterparts of identical form and content, in the presence of the 2 (two)
witnesses below.

Campinas, January 1, 2000

AUTOCAM DO BRASIL USINAGEM LTDA.
Name of the legal representative: LEILA TERESINHA GOZZI
                                  ADMINISTRATIVE MANAGER

LEAN MANAGEMENT CONSULTORIA GERENCIAL LTDA.(1)
Name of the legal representative: EDUARDO RENNER DE CASTILHO
                                  QUOTAHOLDER

WITNESSES:

1 - Illegible Signature
Name: illegible name
RG: 16123480-x

2 - Illegible Signature
Name: Illegible name
RG: 28.022.639-1

------------
(1) Please notice that the Contracted Party's name is LEAN MANAGEMENT
CONSULTORIA EMPRESARIAL S/C LTDA., and not LEAN MANAGEMENT CONSULTORIA GERENCIAL
LTDA.

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