At the earliest convenient time not later than three months after the date any suggested amendment is filed with the city or town clerk, the city council or board of selectmen shall order a public hearing to be held thereon before it or before a committee selected or established by it for the purpose, provided that any number of suggested amendments may be considered at the same hearing. Such a hearing shall be held not later than four months after the filing date of any suggested amendment to be considered, and at least seven days notice of such public hearing shall be published in a newspaper of general circulation in the city or town. Except where the hearing is held by a city council, the board or committee holding the public hearing shall report its recommendations to the city council or town meeting, as the case may be. Final action on such a suggested amendment shall be taken not later than six months after such filing date in the case of a city and, in the case of a town, not later than the first annual town meeting held at least six months after such filing date, provided that at any time after the public hearing two hundred registered voters of a town or twenty per cent of the total number of registered voters of such town, whichever is less, may in writing request the selectmen to call a special town meeting to consider the suggested amendment, and the selectmen shall thereupon call such meeting which shall be held not more than forty-five days after the receipt of the request.
Mass. Gen. Laws ch. 43B, § 43B:10