Mass. Gen. Laws ch. 152, § 10
(1) Any claim for benefits shall be filed with the division of administration and the insurer on a form prescribed by the division, and shall specifically state the benefits claimed to be due and unpaid. No claim for weekly compensation shall be accepted by the department unless it is either accompanied by a copy of an insurer's notification of denial pursuant to section seven, or at least thirty days have passed from the alleged onset of disability.
Unless otherwise expressly provided, on the receipt of a claim for compensation, a complaint from the insurer requesting a modification or discontinuance of benefits, or a complaint from any party requesting resolution of any other issue arising under this chapter, the division of administration shall notify the parties that it is in receipt of such claim or complaint, and may request the parties to appear and submit relevant information. The conciliation unit within the division of dispute resolution may attempt to resolve the claim or complaint by informal means and the parties shall cooperate with any conciliator assigned to the case. The assigned conciliator shall withdraw without prejudice the claim or complaint of any party that fails to cooperate or to produce requested material.
In order for an attorney's fee to be required under section thirteen A, pursuant to a dispute over a claim for benefits under this chapter, such claim shall have been sent to the insurer by certified mail. No attorney's fee shall be due for services involving a claim sent to the insurer which does not include a copy of a medical report relevant to the alleged claim in the possession of the employee or his attorney. In order for any attorney's fee to be due for services involving a claim for health care services, such claim shall include a copy of any relevant bill and a description from the health care provider of the services rendered. No attorney's fee shall be due for services involving claim for benefits for loss of function or disfigurement under section thirty-six unless such claim includes a copy of a letter from a physician describing the location and extent of the alleged loss of function or disfigurement and the specific amount requested for compensation therefor. No attorney's fee shall be due for services involving claims for mileage reimbursement unless such claims delineate the date and purpose for the travel, identity of the medical provider and mileage of each trip for which reimbursement is sought. No attorney's fee shall be due for any claim solely involving unpaid attorney's fees or expenses for past services.
(2) Any claim or complaint shall be referred to the industrial accident board within fifteen business days of its receipt by the division of administration unless:
(c) the conciliator receives an agreement signed by the parties, on a form prescribed by the department, indicating that they will abide by the findings of an independent arbitrator chosen by such parties to make findings as to compensation pursuant to section ten B. Any conciliator, within their departmental capacity, may also be chosen by the parties to serve as the arbitrator. Said agreement may specify that any subsequent claim or complaint regarding the instant injury shall, after having been filed with the department, and, provided that such subsequent claim or complaint has not been successfully mediated by the assigned conciliator, be forwarded to the same or other agreed upon arbitrator and not be referred to the division of dispute resolution. When presented with such a signed agreement, the assigned conciliator shall mark the case as forwarded to arbitration.
Any party aggrieved by an extension of the conciliation period or by the conciliator's withdrawal of a claim or complaint may file a written appeal with the senior judge who, if all requested information has been submitted, shall set a date for referral to the industrial accident board.
(4) In each instance in which a claim or complaint is referred to the industrial accident board following a conciliation, the conciliator to whom the case was assigned shall forward a written report setting out the issues in controversy and the information he deems to support: