Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 222, § 3

The governor, with the advice and consent of the council, shall appoint commissioners to administer to public officers the oaths of office required by the constitution. Upon administering such oaths, the commissioners shall forthwith make return thereof, with the date of the same, to the state secretary. Neither the state secretary, nor any officer or employee in his department acting as such a commissioner, shall charge any fee for administering such an oath.