Section 4B. At any time after the expiration of three years from the date on which a law to take effect upon its acceptance by a city or town or a municipality as defined in section four, or is to be effective in such cities, towns or municipalities accepting its provisions, has been accepted in any such city, town or municipality such statute may be revoked in the same manner as it was accepted by such city, town or municipality, but such revocation shall be subject to the following restrictions:
(a) This section shall not apply if such law provides for another manner of revocation.
(b) This section shall not apply to any such law which authorizes, but does not require, acceptance by a city, town or municipality to act.
(c) This section shall not apply to any action taken under chapter thirty-two or thirty-two B.
(d) This section shall not apply to any action taken to establish a regional district, authority or other entity which involves another city, town, municipality, district or other governmental entity.
(e) This section shall not affect any contractual or civil service rights which have come into existence between the city, town or municipality and any officer or employee thereof as a result of the original acceptance of any such law or the provisions thereof; provided, however, that such revocation shall apply to the successor to the incumbent officer or employee, which application shall prevent such contractual or civil service right from automatically continuing with respect to such successor officer or employee.
“Shall the acceptance by ___ (City, Town) of section(s) ___ of chapter ___ of the General Laws be revoked?
If, on the sixty-first day following the date a vote has been taken to revoke the acceptance of an optional provision of the General Laws, and no petition as aforesaid has been filed, the vote to revoke shall become effective forthwith.
If at the time a city, town, municipality or district is authorized to revoke its acceptance of a law under the provisions of this section and such city, town, municipality or district has adopted a change in charter or otherwise is required to adopt a different procedure for acceptance of such law other than that procedure used for its original acceptance, then the procedure for acceptance in effect at the time of revocation shall be the manner for revoking such original acceptance.