Whenever a city, town or district votes to grant a salary increase to all or any of its employees, such increase may be retroactive to a date not earlier than the beginning of the fiscal year prior to the date of such vote.
Mass. Gen. Laws ch. 44, § 68
Retroactive salary increases
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.