AMENDED AND RESTATED
                             MANAGEMENT AGREEMENT

   This AMENDED AND RESTATED MANAGEMENT AGREEMENT ("Agreement") is made as of
the 1st day of July, 2008, as further amended as of November 12, 2013, by and
between PIONEER FUND (the "Trust"), a Delaware statutory trust, and Pioneer
Investment Management, Inc., a Delaware corporation (the "Manager").

   WHEREAS, the Trust is registered as a management investment company under
the Investment Company Act of 1940, as amended (the "1940 Act");

   WHEREAS, the Manager is engaged primarily in rendering investment advisory
and management services and is registered as an investment adviser under the
Investment Advisers Act of 1940, as amended;

   WHEREAS, the Trust wishes to retain the Manager to provide investment
advisory and management services to the Trust with respect to the series of the
Trust designated in Appendix A annexed hereto (the "Funds"); and

   WHEREAS, the Manager is willing to furnish such services on the terms and
conditions hereinafter set forth;

   NOW THEREFORE, in consideration of the promises and mutual covenants herein
contained, it is agreed as follows:

   1. The Trust hereby appoints the Manager to act as investment adviser of
each Fund for the period and on the terms set forth in this Agreement. The
Manager accepts such appointment and agrees to render the services herein set
forth, for the compensation herein provided.

   2.(a) Subject to the supervision of the Trust's Board of Trustees (the
"Board"), the Manager shall regularly provide each Fund with investment
research, advice, management and supervision and shall furnish a continuous
investment program for the Fund's portfolio of securities and other investments
consistent with the Fund's investment objectives, policies and restrictions, as
stated in the Fund's current Prospectus and Statement of Additional
Information. The Manager shall determine from time to time what securities and
other investments (including, without limitation, repurchase agreements, swap
agreements, options, futures and other instruments) will be purchased,
retained, sold or exchanged by each Fund and what portion of the assets of the
Fund's portfolio will be held in the various securities and other investments
in which the Fund invests, and what portion will be held uninvested in cash,
and shall implement those decisions (including the execution of investment
documentation), all subject to the provisions of the Trust's Declaration of
Trust and By-Laws (collectively, the "Governing Documents") and the 1940 Act,
as well as the investment objectives, policies and restrictions of the Fund
referred to above, and any other specific policies adopted by the Board and
disclosed to the Manager. The Manager is authorized as the agent of the Trust
to give instructions to the custodian of each Fund as to deliveries of
securities and other investments and payments of cash for the account of the
Fund. Subject to applicable provisions of the 1940 Act and direction from the
Board, the investment program to be provided hereunder may entail the
investment of all or substantially all of the assets of any Fund in one or more
investment companies. The Manager

will place orders pursuant to its investment determinations for each Fund
either directly with the issuer or with any broker or dealer, foreign currency
dealer, futures commission merchant or others selected by it. Except as
described herein, the Manager shall seek overall the best execution available
in the selection of brokers or dealers and the placing of orders for each Fund.
In assessing the best execution available for any transaction, the Manager may
consider factors it deems relevant, including the size and type of the
transaction, the nature and character of the markets for the security to be
purchased or sold, the execution capabilities and financial condition of the
broker or dealer, and the reasonableness of the commission or dealer spread, if
any (whether for a specific transaction or on a continuing basis). In
connection with the selection of such brokers or dealers and the placing of
such orders, subject to applicable law, brokers or dealers may be selected who
also provide brokerage and research services (as those terms are defined in
Section 28(e) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act")) to the Fund and/or the other accounts over which the Manager or its
affiliates exercise investment discretion. The Manager is authorized to pay a
broker or dealer who provides such brokerage and research services a commission
for executing a portfolio transaction for a Fund which is in excess of the
amount of commission another broker or dealer would have charged for effecting
that transaction if the Manager determines in good faith that such amount of
commission is reasonable in relation to the value of the brokerage and research
services provided by such broker or dealer, viewed in terms of either that
particular transaction or in terms of all of the accounts over which the
Manager or its affiliates exercise investment discretion. The Manager shall
also provide advice and recommendations with respect to other aspects of the
business and affairs of each Fund, shall exercise voting rights, rights to
consent to corporate action and any other rights pertaining to the Fund's
portfolio securities subject to such direction as the Board may provide, and
shall perform such other functions of investment management and supervision as
may be directed by the Board. Notwithstanding the foregoing, the Manager shall
not be deemed to have assumed any duties with respect to, and shall not be
responsible for, the distribution of the shares of any Fund, nor shall the
Manager be deemed to have assumed or have any responsibility with respect to
functions specifically assumed by any administrator, transfer agent, fund
accounting agent, custodian, shareholder servicing agent or other agent, in
each case employed by the Trust or a Fund to perform such functions. The
Manager may execute on behalf of each Fund certain agreements, instruments and
documents in connection with the services performed by it under this Agreement.
These may include, without limitation, brokerage agreements, clearing
agreements, account documentation, futures and options agreements, swap
agreements, other investment related agreements, and any other agreements,
documents or instruments the Manager believes are appropriate or desirable in
performing its duties under this Agreement.

     (b) Each Fund hereby authorizes any entity or person associated with the
Manager which is a member of a national securities exchange to effect any
transaction on the exchange for the account of the Fund which is permitted by
Section 11(a) of the Exchange Act and Rule 11a2-2(T) thereunder, and each Fund
hereby consents to the retention of compensation for such transactions in
accordance with Rule 11a2-2(T)(a)(2)(iv).

   3. Subject to the Board's approval, the Manager or any Fund may enter into
contracts with one or more investment subadvisers, including without
limitation, affiliates of the Manager, in which the Manager delegates to such
investment subadvisers any or all its duties specified hereunder, on such terms
as the Manager determines to be necessary, desirable or appropriate, provided
that in each case such contracts are entered into in accordance with and

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meet all applicable requirements of the 1940 Act. The Trust agrees that the
Manager shall not be accountable to the Trust or any Fund or any Fund's
shareholders for any loss or other liability relating to specific investments
selected by any such subadviser.

   4. The Trust shall at all times keep the Manager fully informed with regard
to the securities and other investments owned by each Fund, its funds
available, or to become available, for investment, and generally as to the
condition of its affairs. The Trust shall furnish the Manager with such other
documents and information with regard to its affairs as the Manager may from
time to time reasonably request. The Manager shall supply the Board and
officers of the Trust with such information and reports reasonably required by
them and reasonably available to the Manager.

   5.(a) Unless maintained by another party on the Fund's behalf, the Manager
shall maintain the books and records with respect to each Fund's securities and
other transactions and keep the Fund's books of account in accordance with all
applicable federal and state laws and regulations. In compliance with the
requirements of Rule 31a-3 under the 1940 Act, the Manager hereby agrees that
any records that it maintains for each Fund are the property of the Fund, and
further agrees to surrender promptly to the Fund any of such records upon the
Fund's request. The Manager further agrees to arrange for the preservation of
the records required to be maintained by Rule 31a-1 under the 1940 Act for the
periods prescribed by Rule 31a-2 under the 1940 Act.

     (b) The Manager shall furnish, at its expense, all necessary services,
facilities, equipment and personnel for performing the Manager's services under
this Agreement. Other than as herein specifically indicated, the Manager shall
not be responsible for the Trust's or any Fund's ordinary and extraordinary
expenses, and the Trust or a Fund shall pay the Trust's or the Fund's ordinary
and extraordinary expenses. The Manager may agree to provide to the Funds
services other than the services that are provided under this Agreement, on
such terms as the Manager and the Trust may agree from time to time, and
nothing herein shall preclude payment by the Trust or a Fund of compensation to
the Manager for any such services rendered pursuant to a written agreement or
agreements approved by the Board.

   6. From time to time, the Manager shall authorize and permit certain of its
directors, officers and employees, who may be elected as Board members or
officers of the Trust, to serve in the capacities in which they are elected.
The Manager will pay directly or reimburse the Trust for the compensation (if
any) of the Trustees who are affiliated persons of the Manager and all officers
of the Trust as such, except as the Board may decide.

   7. As compensation for the services performed and the facilities furnished
and expenses assumed by the Manager, each Fund shall pay the Manager, as
promptly as possible after the last day of each month, a fee, computed daily at
an annual rate set forth opposite the Fund's name on Appendix A annexed hereto,
based on the Fund's average daily net assets or otherwise as set forth on
Appendix A. If this Agreement is terminated with respect to any Fund as of any
date not the last day of a month, the fee payable by the Fund shall be paid as
promptly as possible after such date of termination and shall be computed on
the basis of the period ending on the last business day on which this Agreement
is in effect with respect to the Fund subject to a pro rata adjustment based on
the number of days elapsed in the current month as a percentage of the total
number of days in the month.

                                     - 3 -

   8. The Manager assumes no responsibility under this Agreement other than to
render the services called for hereunder, in good faith, and shall not be
liable for any error of judgment or mistake of law, or for any loss arising out
of any investment or for any act or omission in the execution of securities or
other transactions for any Fund, provided that nothing in this Agreement shall
protect the Manager against any liability to a Fund to which the Manager would
otherwise be subject by reason of willful misfeasance, bad faith, or gross
negligence in the performance of its duties or by reason of its reckless
disregard of its obligations and duties hereunder. As used in this paragraph 8,
the term "Manager" shall include any affiliates of the Manager performing
services for the Trust or any Fund pursuant to this Agreement and the partners,
shareholders, directors, officers and employees of the Manager and such
affiliates.

   9. Nothing in this Agreement shall limit or restrict the right of any
director, officer, or employee of the Manager who may also be a Trustee,
officer, or employee of the Trust or any Fund, to engage in any other business
or to devote his time and attention in part to the management or other aspects
of any other business, whether of a similar nature or a dissimilar nature, nor
to limit or restrict the right of the Manager to engage in any other business
or to render services of any kind, including investment advisory and management
services, to any other fund, firm, individual or association. If the purchase
or sale of securities or other investments consistent with the investment
policies of any Fund or one or more other accounts of the Manager is considered
at or about the same time, transactions in such securities or other investments
will be allocated among the accounts in a manner deemed equitable by the
Manager. Such transactions may be combined, in accordance with applicable laws
and regulations, and consistent with the Manager's policies and procedures as
presented to the Board from time to time.

   10. For the purposes of this Agreement, a Fund's "net assets" equal the
value of the Fund's securities plus any other assets minus its accrued
operating expenses and other liabilities, and the terms "assignment,"
"interested person," and "majority of the outstanding voting securities" shall
have the meanings given to them by Section 2(a) of the 1940 Act, and references
to the "1940 Act" shall include any rule, regulation or applicable exemptive
order of the Securities and Exchange Commission (the "Commission") thereunder
and interpretive guidance with respect to the 1940 Act by the Commission or its
staff.

   11. This Agreement will become effective with respect to each Fund on the
date first above written or such later date set forth opposite the Fund's name
on Appendix A annexed hereto, provided that it shall have been approved by the
Trust's Board and by the shareholders of the Fund in accordance with the
requirements of the 1940 Act and, unless sooner terminated as provided herein,
will continue in effect for each Fund designated on Appendix A on the date
hereof until December 31, 2009, and for each Fund added to Appendix A
hereafter, until the date specified in Appendix A. Thereafter, if not
terminated, this Agreement shall continue in effect with respect to each Fund,
so long as such continuance is specifically approved at least annually (i) by
the Board or (ii) by a vote of a majority of the outstanding voting securities
of the Fund, provided that in either event the continuance is also approved by
a majority of the Trustees who are not interested persons of any party to this
Agreement, by vote cast in person at a meeting called for the purpose of voting
on such approval.

   12. This Agreement is terminable with respect to any Fund without penalty by
the Board or by vote of a majority of the outstanding voting securities of the
Fund, in each case on

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not more than 60 days' nor less than 30 days' written notice to the Manager, or
by the Manager upon not less than 60 days' written notice to the Trust, and
will be terminated upon the mutual written consent of the Manager and the
Trust. This Agreement shall terminate automatically in the event of its
assignment. This Agreement may be terminated with respect to one or more Funds
without affecting the validity of this Agreement with respect to any other Fund
designated on Appendix A.

   13. The Manager agrees that for services rendered to each Fund, or for any
claim by it in connection with services rendered to the Fund, it shall look
only to assets of the Fund for satisfaction and that it shall have no claim
against the assets of any other portfolios of the Trust. The undersigned
officer of the Trust has executed this Agreement not individually, but as an
officer under the Trust's Declaration of Trust and the obligations of this
Agreement are not binding upon any of the Trustees, officers or shareholders of
the Trust individually.

   14. The Trust agrees that in the event that none of the Manager or any of
its affiliates acts as an investment adviser to a Fund, the name of the Fund
will be changed to one that does not contain the name "Pioneer" or otherwise
suggest an affiliation with the Manager.

   15. No provision of this Agreement may be changed, waived, discharged or
terminated orally, but only by an instrument in writing signed by the party
against which enforcement of the change, waiver, discharge or termination is
sought, and no material amendment of the Agreement with respect to any Fund
shall be effective until approved, if so required by the 1940 Act, by vote of
the holders of a majority of that Fund's outstanding voting securities.

   16. This Agreement embodies the entire agreement and understanding between
the parties hereto and supersedes all prior agreements and understandings
relating to the subject matter hereof. Should any part of this Agreement be
held or made invalid by a court decision, statute, rule or otherwise, the
remainder of this Agreement shall not be affected thereby. This Agreement shall
be binding on and shall inure to the benefit of the parties hereto and their
respective successors.

   17. This Agreement shall be construed and the provisions hereof interpreted
under and in accordance with the laws of The Commonwealth of Massachusetts.

   18. This Agreement may be executed in one or more counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

   19. This Agreement amends and restates in its entirety the prior management
agreement in effect for the Fund.

                          [signature page to follow]

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   IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their officers thereunto duly authorized.

                                          PIONEER FUND

                                          By:     /s/ Daniel K. Kingsbury
                                                  -----------------------------
                                          Name:   Daniel K. Kingsbury
                                          Title:  Trustee and Executive Vice
                                                  President

                                          PIONEER INVESTMENT MANAGEMENT, INC.

                                          By:     /s/ Gregg M. Dooling
                                                  -----------------------------
                                          Name:   Gregg M. Dooling
                                          Title:  Chief Financial Officer

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                                  Appendix A

<TABLE>
<C>           <S>
Fund          Effective Date/Initial Term Date
----          --------------------------------

Pioneer Fund  Effective Date: July 1, 2008

              Initial Term: July 1, 2008-December 31, 2009
</TABLE>

Fee
---

The Fund shall pay to the Manager, as compensation for the Manager's services
and expenses assumed hereunder, a fee as set forth below. Management fees
payable hereunder shall be computed daily and paid monthly in arrears.

(a)The fee payable hereunder shall be composed of the Basic Fee (defined below)
   and a Performance Adjustment (defined below) to the Basic Fee based upon the
   investment performance of the Fund in relation to the investment record of a
   securities index determined by the Trustees of the Trust to be appropriate
   over the same period. The Trustees have designated the S&P 500 Index (the
   "Index") for this purpose.

(b)From time to time, the Trustees may by a vote of the Trustees of the Trust
   voting in person, including a majority of its Trustees who are not parties
   to this Agreement or "interested persons" (as defined in the 1940 Act) of
   any such parties, determine 1) that another securities index is a more
   appropriate benchmark than the Index for purposes of evaluating the
   performance of the Fund; and/or 2) that a Class of shares of the Fund other
   than Class A is most appropriate for use in calculating the Performance
   Adjustment. After ten days' written notice to the Manager, a successor index
   (the "Successor Index") may be substituted for the Index in prospectively
   calculating the Performance Adjustment; and/or a different Class of shares
   may be substituted in calculating the Performance Adjustment. However, the
   calculation of that portion of the Performance Adjustment attributable to
   any portion of the performance period prior to the adoption of the Successor
   Index will still be based upon the Fund's performance compared to the Index.
   The use of a different Class of shares for purposes of calculating the
   Performance Adjustment shall apply to the entire performance period so long
   as such Class was outstanding at the beginning of such period. In the event
   that such Class of shares was not outstanding for all or a portion of the
   Performance Period, it may only be used in calculating that portion of the
   Performance Adjustment attributable to the period during which such Class
   was outstanding and any prior portion of the Performance Period shall be
   calculated using Class A shares.

(c)The Basic Fee is equal to a fee at the annual rate of 0.60% per annum of the
   Fund's average daily net assets up to $7.5 billion, 0.575% of the next $2.5
   billion and 0.55% of the excess over $10 billion.

(d)The Performance Adjustment consists of an adjustment to the monthly Basic
   Fee to be made by applying a Performance Adjustment rate to the average net
   assets of the Fund over the

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   Performance Period. The resulting dollar figure will be added to or
   subtracted from the Basic Fee depending on whether the Fund experienced
   better or worse performance than the Index.

      The Performance Adjustment rate is 0.01% for each percentage point,
   rounded to the nearer point (the higher point if exactly one-half point),
   that the Fund's investment performance for the Performance Period was better
   or worse than the performance of the Index as then constituted. The maximum
   Performance Adjustment is 0.10%.

      The Performance Period shall consist of a rolling 36-month period
   consisting of the most recently completed month and the previous 35 months.

      The Fund's investment performance will be measured by comparing the
   (i) opening net asset value of one Class A share of the Fund on the first
   business day of the performance period with (ii) the closing net asset value
   of one Class A share of the Fund as of the last business day of such period.
   In computing the investment performance of the Fund and the investment
   record of the Index, distributions of realized capital gains, the value of
   capital gains taxes per share paid or payable on undistributed realized
   long-term capital gains accumulated to the end of such period and dividends
   paid out of investment income on the part of the Fund, and all cash
   distributions of the companies whose stock comprise the Index, will be
   treated as reinvested in accordance with Rule 205-1 or any other applicable
   rule under the Investment Advisers Act of 1940, as the same from time to
   time may be amended.

      The computation of the Performance Adjustment will not be cumulative. A
   positive fee adjustment will apply even though the performance of the Fund
   over some period of time shorter than the performance period has been behind
   that of the Index, and, conversely, a negative fee adjustment will apply for
   the month even though the performance of the Fund over some period of time
   shorter than the performance period has been ahead of that of the Index.

(e)An appropriate percentage (based on the number of days in the current month)
   of the annual Performance Adjustment rate shall be multiplied by the average
   of the net assets of the Fund (computed in the manner set forth in the
   Declaration of Trust of the Trust adjusted as provided above, if applicable)
   determined as of the close of business on each business day through out the
   performance period. The resulting dollar amount is added to or deducted from
   the Basic Fee.

(f)Notwithstanding the foregoing, the Manager will limit the maximum annual fee
   payable hereunder for any fiscal year by limiting any positive adjustment of
   the Basic Fee to 0.10% of the Fund's average daily net assets for the
   current fiscal year.

(g)In the event of the termination of this Agreement, the Basic Fee then in
   effect shall be computed on the basis of the period ending on the last
   business day on which this Agreement is in effect subject to a pro rata
   adjustment based on the number of days elapsed in the current month as a
   percentage of the total number of days in such month. The amount of any
   Performance Adjustment to the Basic Fee will be computed on the basis of and
   applied to net assets averaged over the 36-month period ending on the last
   business day on which this Agreement is in effect.

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