Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 111, § 26E

Every such commissioner of health shall make rules and regulations for the department of health, its officers, agents and assistants. He may appoint such necessary assistants and clerks as may be required to execute the health laws and regulations of the department. They shall devote their entire time to the performance of their duties unless specifically employed on a part-time basis.