A member of a police or fire department of a city, town or a fire or water district who retires under sections 56 to 60, inclusive and who was appointed a reserve police officer or call fire fighter shall, for the purpose of retirement, be entitled to count as creditable service the person's service as a reserve police officer or call fire fighter as the retiring authority shall determine.
This section shall take effect:
Mass. Gen. Laws ch. 32, § 57B