Exhibit h(4)




                          Domini Social Investments LLC
                             536 Broadway, 7th Floor
                            New York, New York 10012


                                                  November 30, 2004


Domini Social Investment Trust
536 Broadway, 7th Floor
New York, New York 10012


         Re:      Expense Limitation Agreement

Ladies and Gentlemen:

         Domini Social Investments LLC currently provides oversight and
administrative and management services to Domini Social Investment Trust (the
"Trust"), a Massachusetts business trust. We hereby agree with the Trust that we
will waive expenses payable to us by the Trust's series designated Domini Social
Equity Fund (the "Fund") or will reimburse the Fund for all expenses payable by
the Fund to the extent necessary so that the Fund's aggregate expenses
(excluding brokerage fees and commissions, interest, taxes, and other
extraordinary expenses), net of waivers and reimbursements, would not exceed, on
a per annum basis, 0.95% of the average daily net assets representing the Fund's
Investor shares and 0.63% of the average daily net assets representing the
Fund's Class R shares.

         The agreement in this letter shall take effect on November 30, 2004,
and shall remain in effect until November 30, 2005, absent an earlier
modification by the Board of Trustees, which oversees the Fund

         Please sign below to confirm your agreement with the terms of this
letter.

                                            Sincerely,

                                            Domini Social Investments LLC


                                            By:
                                                -------------------------------
                                                Title: Chief Executive Officer


Agreed:
Domini Social Investment Trust


By:
    --------------------------
    Title: Treasurer