Mass. Gen. Laws ch. 149 § 30B
All service in excess of eight hours in any one tour of duty or forty hours in any one work week rendered by any employee of the commonwealth at the request of an officer of the commonwealth or other person whose duty it is to employ, direct or control such employee, except the state police uniformed force and detectives, fire prevention engineer, boatswain coastal patrol boat, captain coastal patrol boat, coastal warden coastal patrol boat, coastal warden engineer coastal patrol boat, industrial relations adjuster, labor relations examiners, teachers, armorers, elected officers, appointees of the governor, heads of departments and divisions and their deputies and assistants, confidential secretaries, incumbents of the positions of superintendents, assistant superintendents, deputy superintendents, stewards, physicians, dentists, head farmers, business manager, institutions chief power plant engineers at mental health, intellectual disability, public health, correctional institutions, state-operated veterans' homes and agencies under the jurisdiction of the department of youth services, the manager of the boarding hall at the University of Massachusetts, the adjutants of the state-operated veterans' homes, and any employees while on full travel status, shall be compensated for at the rate of one and one half times the regular hourly rate of said employee for every hour or fraction thereof of such services rendered. The personnel administrator is empowered to make rules and regulations, subject to the approval of the commissioner of administration, to carry out the provisions of this section.
Mass. Gen. Laws ch. 149, § 30B