Mass. Gen. Laws ch. 30, § 12: Oaths of office; failure to take and subscribe

Section 12. A person appointed to an office by the governor with or without the advice and consent of the council shall be notified of his appointment by the state secretary and his commission delivered to him upon qualification, and if he does not, within three months after the date of such appointment, take and subscribe the oaths of office, his appointment shall be void, and the secretary shall forthwith notify him thereof, and shall also certify said facts to the governor. This section shall be printed on every such commission.