Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 43, § 132

If, within the time prescribed by section one hundred and thirty-one, the city council shall fail to make a division of the city into districts as required by that section, the mayor of such city in any city having a mayor elected by the people, or the city clerk in any city having a council-manager form of government, shall propose a plan of districts in the required number to the local election district review commission, which shall approve the same with or without amendments as it deems appropriate and necessary to meet constitutional requirements, after a public hearing.