Massachusetts Rules of Professional Conduct Rule 3.9: Advocate in Nonadjudicative Proceedings
A lawyer representing a client before a legislative or administrative tribunal in a nonadjudicative proceeding shall disclose that the appearance is in a representative capacity and shall conform to the provisions of Rules 3.3(a) through (c), 3.4(a) through (c), and 3.5(a) through (c).
Adopted June 9, 1997, effective January 1, 1998.
 In representation before bodies such as legislatures, municipal councils, and executive and administrative agencies acting in a rule-making or policy-making capacity, lawyers present facts, formulate issues and advance argument in the matters under consideration. The decision-making body, like a court, should be able to rely on the integrity of the submissions made to it. A lawyer appearing before such a body should deal with the tribunal honestly and in conformity with applicable rules of procedure.
 Lawyers have no exclusive right to appear before nonadjudicative bodies, as they do before a court. The requirements of this Rule therefore may subject lawyers to regulations inapplicable to advocates who are not lawyers. However, legislatures and administrative agencies have a right to expect lawyers to deal with them as they deal with courts.
 This Rule does not apply to representation of a client in a negotiation or other bilateral transaction with a governmental agency; representation in such a transaction is governed by Rules 4.1 through 4.4.
 Unless otherwise expressly prohibited, ex parte contacts with legislators and other persons acting in a legislative capacity are not prohibited.
Corresponding Former Massachusetts Rule. DR 7-106 (B)(2).