Mass. Gen. Laws ch. 13, § 22
(p) Chapters 268A and 268B shall apply to the members of the board; provided, however, that the board shall establish a code of ethics, which shall be more restrictive than said chapters 268A and 268B, for all members, investigative agents appointed pursuant to section 25 and employees. A copy of the code shall be filed with the state ethics commission. The code shall include provisions reasonably necessary to carry out the purposes of this section and any other laws pertaining to the jurisdiction of the board including, but not limited to: