N.Y. Comp. Codes R. & Regs. tit. 4 § 205.5
A response shall be filed in the same manner as was the petition within 10 working days of receipt of the petition requesting arbitration. A copy of the response shall also be served simultaneously upon the petitioning party.
Such response shall contain respondent's position specifying the terms and conditions of employment that were resolved by agreement, and as to those that were not agreed upon, respondent shall set forth its position. Proposed contract language presented during negotiations shall be included. If the respondent has filed an improper practice charge or a declaratory ruling petition related to compulsory interest arbitration under section 205.6 of this Part, the response shall contain a reference to such charge or petition. The response must include the name, address, telephone number, fax number and electronic mail address if any, of the individual that the respondent is appointing to the public arbitration panel, the same information for the individual who will be representing the respondent in the interest arbitration, and proof of service upon the petitioning party.
A petitioner filing an objection to arbitrability under section 205.6(b) of this Part must file a cross-response notifying the director of conciliation of such filing. Such cross-response shall be filed within 10 working days of receipt of the response.
N.Y. Comp. Codes R. & Regs. Tit. 4 § 205.5