Either party may file a Counterclaim in response to an Arbitration application within 10 days after receiving notice that request has been filed and accepted. Complete the provided spreadsheet.(a) A Demand for Arbitration Form and applicable arbitration agreement must be submitted for each Claimant. You must complete the "Claimant" and "Respondent" portions on the front of a Submission Agreement. In the blank spaces provided for the claimants' names, you. Arbitration disputes are final and legally binding at MDRS, a Massachusetts Abritration and Mediation firm in Boston and Salem. In order to begin the process, either party to a legal fee dispute may file a "Petition for Arbitration. The agreement shall also identify all costs and fees which may be payable in the arbitration and shall state which party shall be responsible for the payments.