<PAGE>
                                                                    Exhibit 10.6


                              EMPLOYMENT AGREEMENT

     THIS AGREEMENT is made and entered into as of JUNE 1, 2002 by and between
MAGUIRE INSURANCE AGENCY, Inc., a Pennsylvania corporation ("Employer"), and
CRAIG KELLER ("Employee") for the purposes herein stated.

                             Background of Agreement

     Employee desires to continue in the employ of the Employer, and desires
certain protections and benefits; and

     Employee and the Employer deem it to be in their respective best interests
to enter into an agreement providing for compensation and benefits for Employee
pursuant to the terms stated in this Agreement; and

     The Employer desires to place reasonable restraints upon Employee's ability
to compete with the Employer during a specified period immediately following
Employee's termination from employment;

     Accordingly, in consideration of the mutual promises and agreements
contained herein, the parties hereto agree to the following:

     1. EMPLOYMENT. The Employer agrees to continue Employee in its employ, and
Employee agrees to remain in the employ of the Employer, for the Term of this
Agreement, subject to Sections 6 and below.

     2. DEFINITIONS. The following terms when used herein shall have the
meanings given below:

          (a) "AFFILIATE" means any party controlled by, under the control of,
or under common control with, Employer or PCHC.

          (b) "AGREEMENT AND GENERAL RELEASE" means a general release of claims
against the Employer in a form acceptable to the Employer.

          (c) "BASE COMPENSATION" means the annual base salary of Employee,
exclusive of any bonus, insurance, or other fringe benefits and perquisites.

          (d) "BOARD" means the Board of Directors of PCHC.

          (e) "CAUSE" means commission of any of the following listed conduct by
Employee: a felony or any crime involving moral turpitude (whether or not
related to Employee's employment), incompetence or gross negligence,
unsatisfactory performance of a substantial nature, drug or alcohol use which
interferes with Employee's job performance, insubordination, willful misconduct,
violation of any express directive or regulation established by the Employer
from time to time regarding the conduct of its business, misrepresentations by



<PAGE>

Employee related to this Agreement, any violation by Employee of the terms and
conditions of this Agreement not cured within ten days after written notice
thereof is given by the Employer to Employee, acceptance of employment with
another company (other than employment with a Successor or a purchaser of assets
from the Employer), and/or performing work for another company, as an employee,
consultant or in any other capacity, while still an employee of the Employer and
any other act, omission or circumstance which, under applicable law, would
result in a termination by the Employer of Employee's employment hereunder to be
deemed to be a termination for cause.

          (f) "EFFECTIVE DATE" means the date upon which this Agreement becomes
effective, as set forth in Section 4 below.

          (g) "GOOD REASON" means either of the following:

               (i) A change in Employee's position of authority in a manner that
materially reduces the responsibility of Employee's current position of (i),
provided, however, the fact that there may be additional executives in the
reporting structure above Employee will not be deemed to materially reduce the
responsibility of Employee's position.

               (ii) A reduction in Employee's Base Compensation.

          (h) "HOSTILE CHANGE IN CONTROL" mean individuals who are Continuing
Directors cease to constitute a majority of the members of the Board
("Continuing Directors" for this purpose being the members of the Board on the
date of this Agreement, provided that any person becoming a member of the Board
subsequent to such date whose election or nomination for election was supported
by two-thirds of those directors who were Continuing Directors at that time of
the election or nomination shall be deemed to be c Continuing Director).

               (i) "PCHC" means Philadelphia Consolidated Holding Corp., a
Pennsylvania corporation.

          (j) "SUCCESSORS" means any entity that acquires at least fifty (50)
percent of the shares of outstanding stock, and/or fifty percent (50%) of the
assets, of the Employer or PCHC (whether direct or indirect, by purchase,
merger, consolidation or otherwise).

          (k) "TERM" shall have the meaning set forth in Section 4 below.

     3. POSITION AND RESPONSIBILITIES.

          (a) During the Term of this Agreement, Employee agrees to serve the
Employer as SENIOR VICE PRESIDENT AND CFO. This in no way inhibits him from
being promoted to another position during the Term of this Agreement, or
assigned different duties, consistent with Employee's status and responsibility,
which changes are in the sole discretion of the Employer.

          (b) Throughout the Term of this Agreement, Employee shall devote his
entire working time, energy, attention, skill and best efforts to the affairs of
the Employer and its





                                      -2-
<PAGE>

Affiliates and to the performance of his duties hereunder in a manner which will
faithfully and diligently further the business and interests of the Employer.

     4. TERM. This Agreement shall be effective on JUNE 1, 2002 (the "Effective
Date") and shall expire in the absence of a Hostile Change in Control on the
fifth anniversary of such date, unless extended by agreement of Employee and the
Employer. In the event of a Hostile Change in Control, this Agreement shall be
automatically extended for a period of three years, commencing upon the
expiration date set forth in the immediately preceding sentence. Notwithstanding
the foregoing, Employee and the Employer agree that the provisions of Section 7
shall remain in effect and enforceable in accordance with its terms following
the expiration of this Agreement, except as otherwise provided in such Section
7. The applicable period referred to above is referred to herein as the "Term"
of this Agreement.

     5. COMPENSATION AND BENEFITS. During the Term of this Agreement, Employee
shall be eligible for the following, in return for all services rendered by
Employee to the Employer during the period of employment, subject to the
provisions of Section 6, as applicable:

          (a) BASE COMPENSATION. Upon the effective date of this Agreement,
Employee shall receive Base Compensation at the annual rate of TWO HUNDRED
THIRTY SIX THOUSAND FIVE HUNDRED Dollars ($236,500), subject to periodic reviews
and possible increases in the sole discretion of the Employer. Employee's Base
Compensation shall be payable in accordance with the Employer's regular payroll
practices in effect from time to time.

          (b) BENEFITS. Employee shall be entitled to all group health,
disability, life insurance and pension benefits as are made available to
employees of the Company generally as such benefit programs may be amended from
time to time. Benefits due under any Bonus Plan or Stock Option Plan will be
paid based upon the Agreements signed specific to those plans.

          (c) BUSINESS EXPENSES. Employee shall be reimbursed reasonable and
necessary expenses related to Employee's employment by the Employer in
accordance with, and subject to, the Employer's regular policies from time to
time in effect regarding reimbursement of expenses and the documentation
required.

     6. TERMINATION OF EMPLOYMENT. The following provisions shall govern in the
event that Employee's employment is terminated by the Employer or by Employee
during the term of this Agreement, except as provided in Section 8, if
applicable:

          (a) Discharge Without Cause or Resignation for Good Reason. Employee
shall receive from the Employer, provided (unless waived by the Employer)
Employee executes (without subsequent revocation) a General Release (except that
Employee shall not be obligated to do so following a Hostile Change in Control),
in the event that Employee either: (A) is discharged without Cause and for
reasons unrelated to his disability or death; or (B) resigns from the Employer
for Good Reason within twelve (12) weeks of the occurrence of the event upon
which Employee relies for claiming that his resignation is for Good Reason:

               His Base Compensation for the lesser of (A) 36 months or (B) the
remainder of the Terms of this Agreement, but in no event less than 6 months,
paid in accordance with the Employer's regular payroll practices then in effect.



                                      -3-
<PAGE>

          (b) Discharge With Cause, Resignation Without Good Reason, Discharge
in Connection With Disability or Death.

               (i)  Employee shall not be eligible for any payments or benefits
                    for the period subsequent to his separation in any of the
                    following circumstances: (A) he is discharged with Cause;
                    (B) he resigns without Good Reason, or more than twelve (12)
                    weeks following the occurrence of the event upon which
                    Employee relies for claiming that his resignation was for
                    Good Reason; (C) he is discharged due to his inability or
                    failure to perform satisfactorily the essential functions of
                    his position for six (6) months due to disability; or (D)
                    his death.

               (ii) Employee shall receive all Base Compensation for work
                    performed and benefits applicable to the period prior to his
                    separation from the Employer (including any earned and not
                    paid bonus for the prior year and any Base Compensation
                    and/or benefits for which he is entitled in accordance with
                    the Employer's compensation and disability policies, if
                    applicable, then in effect). In the event of his disability
                    or death, Employee shall be eligible, in addition, for any
                    disability or life insurance payments to which he or his
                    estate or beneficiaries may be entitled pursuant to the
                    applicable insurance documents relating to any group
                    disability or life insurance plans in which he participated
                    prior to his separation.

          (c) Notice of Termination. Any termination by the Employer or by
Employee shall be communicated by written Notice of Termination to the other
party given in accordance with Section 16 below. Such Notice of Termination
shall indicate the specific termination provision(s) in this Agreement relied
upon and specify the effective date of the termination if other than the date
such Notice of Termination is given (which effective date shall be not more than
thirty (30) calendar days thereafter).

     7. RESTRICTIVE COVENANTS AND CONFIDENTIALITY.

          (a) During Employee's employment with the Employer and for two (2)
years following Employee's separation from the Employer for any reason (whether
initiated by the Employer or Employee), Employee shall not directly or
indirectly either: (A) with respect to a Competitive Business (defined above),
solicit, divert or appropriate, or attempt to solicit, divert or appropriate,
any customer, distributor or supplier, or any potential customer, or supplier of
the Employer; or (B) solicit or entice, or attempt to solicit or entice, any of
the Employer's employees, consultants, directors or officers to terminate
her/his employment with the Employer, or join with any individual who is or was
within the prior six (6) months an employee, consultant, director or officer of
the Employer, in any direct or indirect capacity, or to hire, or commit to hire,
as an employee or consultant any individual who is or was within the prior six
(6) months an employee, consultant, officer or director of the Employer.



                                      -4-
<PAGE>

          (b) During Employee's employment with the Employer and at all times
thereafter, Employee shall not use for his personal benefit, or disclose,
communicate or divulge to, or use for the direct or indirect benefit of, any
person, firm, association or company other than the Employer, any confidential
information of the Employer which Employee acquires in the course of his
employment, which is not otherwise lawfully known by and readily available to
the general public. This confidential information includes, but is not limited
to: business, development, marketing, legal and accounting methods, policies,
plans, procedures, strategies and techniques; research and development projects
and results; trade secrets or other knowledge or processes of or developed by
the Employer; names and addresses of employees, suppliers and customers; and any
data on or relating to past, present or prospective customers, including
customer lists. Employee agrees that such information is confidential and
constitutes the exclusive property of the Employer, and Employee agrees that,
immediately upon Employee's termination, whether by Employee, or by the
Employer, Employee will deliver to the Employer, all correspondence, documents,
books, records, lists and other writings relating to the Employer's business,
retaining no copies.

          (c) The term "Employer", as used in this Section 7 and in Section 11,
shall include as well all Affiliates of Employer and PCHC.

          (d) Employee acknowledges and agrees that the provisions of this
Section 7 are reasonable with respect to their duration, scope and geographical
area. In particular, Employee acknowledges that the geographic scope of the
Employer's business makes reasonable the geographic restrictions of this
Agreement. Employee agrees that his general executive skills and abilities are
applicable outside of the Competitive Business and that he will therefore not be
unduly restricted by this Agreement. If, at the time of enforcement of any of
the provisions of this Section 7, a court holds that the restrictions therein
exceed those allowed by applicable law, then such court will be requested by the
Employer, Employee and all other relevant parties to enforce the provisions in
this Section 7 to the broadest extent possible under applicable law and this
Section 7 shall be deemed to have been so modified.

          (e) In the event of a breach or threatened breach of the provisions of
this Section 7, the Employer shall be entitled to an injunction restraining such
breach, but nothing herein shall be construed as prohibiting the Employer from
pursuing any other remedy available to them for such breach or threatened
breach, including, without limitation, an action at law for damages.

          (f) Notwithstanding anything to the contrary contained in this Section
7 or any other provisions of the Agreement, Employee shall not be bound by any
of the provisions of Section 7(a) following a Hostile Change in Control.

     8. HOSTILE CHANGE IN CONTROL. In the event of a Hostile Change in Control:

          (a) Section 6 shall apply, except as set forth in Section 8(b) below.

          (b) Enhanced Severance Package in the Event of Hostile Change in
Control. In the event that Employee, at any time after a Hostile Change in
Control, is discharged without Cause and for reasons unrelated to his disability
or death, or resigns for Good Reason within




                                      -5-
<PAGE>

twelve (12) weeks of the occurrence of the event upon which Employee relies for
claiming that his resignation is for Good Reason:

               (i) The period specified in Section 6(a)(i) above during which
Employee shall receive his Base Compensation shall be increased to 48 months
from 36 months.

               (ii) The maximum period during which Employee and his eligible,
previously enrolled dependents shall be eligible for Employer-paid group medical
and dental insurance under Section 6(a)(iii) above shall be increased to 36
months from twelve (12) months.

     9. INELIGIBILITY FOR PARTICIPATION IN OTHER EMPLOYER SEVERANCE PLANS. In
the event that Employee becomes entitled to the severance benefits set forth in
Section 6 above, Employee shall be ineligible for (and deemed to have waived his
right to receive) payments under any other severance plan, program or
arrangement maintained by the Employer.

     10. ARBITRATION. Except as set forth in Section 10(f), all disputes arising
under this Agreement or relating to Employee's employment or termination of
employment, including but not limited to statutory claims for violation of Title
VII of the Civil Rights Act, the Age Discrimination in Employment Act, the
Americans with Disabilities Act, the Family Medical Leave Act and ERISA as well
as state laws governing discrimination shall be exclusively resolved in
arbitration in accordance with the following:

          (a) The Rules for the Resolution of Employment Disputes ("Rules"),
then in effect, of the American Arbitration Association ("AAA") shall govern,
except that Employee and the Employer may mutually agree to utilize another
process for selection of the Arbitrator.

          (b) The Arbitrator, in cooperation with Employee and the Employer,
shall set the date, time and place of the hearing in Philadelphia, Pennsylvania.

          (c) The Arbitrator shall have all of the power of a court of competent
jurisdiction for hearing the particular claim, including the power to order
discovery, as set forth in the AAA's rules, and to grant such remedies as a
court would have authority to grant.

          (d) The decision of the Arbitrator shall be in writing and shall set
forth the findings and conclusions upon which the decision is based. It shall be
final and binding, and may be enforced under the terms of the Federal
Arbitration Act (9 U.S.C. Section 1 et seq), but may be set aside or modified by
a reviewing court in the event of a material error of law.

          (e) The Employer and Employee shall share the cost of the Arbitrator's
fees but each shall bear his or its, as applicable, attorneys' fees, expenses
and costs and its respective filing fees charged by the AAA; provided, however,
that the Arbitrator shall have the power to award such fees, expenses and costs
to the prevailing party in accordance with the law and to require the Employer
at the beginning of the proceedings to fully or partially reimburse to employee
the filing fee in the event Employee can demonstrate that the amount of the fee
is an unreasonable impediment to adjudication of his claims in arbitration.

          (f) This Section 10 shall not apply to any action by the Employer to
enforce Section 7 of this Agreement.



                                      -6-
<PAGE>

     11. EMPLOYER PROPERTY. All Employer information, including without
limitation, data processing reports, analyses, invoices, and/or any other
materials or data of any kind furnished to Employee by the Employer or developed
by Employee on behalf of the Employer, or at the Employer's direction or for the
Employer's use, or otherwise in connection with Employee's employment hereunder,
are and shall remain the sole and confidential property of the Employer, except
to the extent such information has been publicly disclosed voluntarily by the
Employer. If the Employer requests the return of such materials, Employee shall
immediately deliver them, retaining no copies.

     12. INCOME TAX WITHHOLDING. The Employer may withhold from any payments
made under this Agreement all Federal, State, City or other taxes and
withholdings as shall be required pursuant to any law or governmental regulation
or ruling.

     13. NO RESTRICTIONS ON EMPLOYEE'S EMPLOYMENT BY EMPLOYER. Employee
represents to Employer that: (i) there are no restrictions, agreements or
understandings whatsoever to which Employee is a party and no laws or
regulations of which he is aware which would or may prevent or make unlawful his
employment by the Employer; (ii) his execution of this Agreement and his
employment hereunder shall not constitute a breach of any contract, agreement or
understanding, oral or written, to which he is a party or by which he is bound;
and (iii) he is free and able to execute this Agreement and to enter into
employment with the Employer.

     14. ENTIRE UNDERSTANDING. This Agreement contains the entire understanding
between the Employer, and Employee superceding all others with respect to the
subject matter hereof, and there are no other agreements, understandings,
representations or warranties among the parties.

     15. SEVERABILITY. If any term or other provision of this Agreement is
invalid, illegal or incapable of being enforced by any rule of law of law or
public policy, all other conditions and provisions of this Agreement shall
nevertheless remain in full force and effect. Upon such determination that any
term or other provision is invalid, illegal or incapable of being enforced, the
parties hereto shall negotiate in good faith to modify this Agreement so as to
effect the original intent of the parties as closely as possible in an
acceptable manner to the end that the transactions contemplated hereby are
fulfilled to the extent possible.

     16. NOTICES. All notices hereunder shall be sufficient upon receipt for all
purposes hereunder if in writing and delivered personally, sent by documented
overnight delivery service or, to the extent receipt is confirmed, telecopy,
telefax or other documented transmission service to the appropriate address or
number as set forth below:

          (a) If to the Employee:

              Craig Keller
              29 Woodcroft Road
              Havertown, PA 19083


                                      -7-
<PAGE>


or at such other address as Employee may designate by written notice to the
Employer as specified below.

          (b) If to the Employer:

              Philadelphia Consolidated Holding Corp.
              One Bala Plaza
              Bala Cynwyd, PA
              Attention:  James J. Maguire, Jr.

or at such other address and to the attention of such other person as the
Employer may designate by written notice to Employee as specified above.

     17. SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon and inure
to the benefit of Employee, Employee's heirs and legal representatives, and to
the Employer, and its Successors and assigns. PCHC and its Affiliates are third
party beneficiaries of this Agreement.

     18. NO ASSIGNMENT BY EMPLOYEE. This Agreement is personal to Employee, and
Employee may not assign or delegate any of Employee's rights or obligations
hereunder without first obtaining the express written consent of the Employer.

     19. COUNTERPARTS AND PREREQUISITES TO BINDING EFFECT OF AGREEMENT. This
Agreement may be executed in one or more counterparts, all of which shall be
considered one and the same agreement, and shall be effective when one or more
counterparts have been signed by each of the parties and delivered to the other
party.

     20. AMENDMENTS AND WAIVERS. This Agreement may not be modified or amended
except by an instrument or instruments in writing signed by the party against
whom enforcement of any modification or amendment is sought. A party hereto may,
only by an instrument in writing, waive compliance by the other party hereto
with any term or provision of the Agreement on the part of such other party
hereto to be performed or complied with. The waiver by any party hereto of a
breach of any term or provision of the Agreement shall not be construed as a
waiver of any subsequent breach.

     21. GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the laws of the Commonwealth of Pennsylvania without reference
to the choice of law principles thereof.

     22. JURISDICTION AND VENUE. The courts of Montgomery County, Pennsylvania
and the United States District Court for the Eastern District of Pennsylvania
shall have exclusive jurisdiction and venue with respect to any action to
enforce this Agreement which is not subject to arbitration.

     IN WITNESS WHEREOF, the parties hereto, intending to be legally bound, have
duly executed and delivered, in Pennsylvania, this Agreement.



                                      -8-
<PAGE>

                                       MAGUIRE INSURANCE AGENCY, INC.


                                       By:    /s/ James J. Maguire
                                           -----------------------------------
                                        Title:  CEO



                                       I UNDERSTAND AND AGREE TO BE BOUND

                                         /s/ Craig P. Keller            8/7/02
                                       ---------------------------------------
                                       Employee                          DATE



                                      -9-