A person engaged in manufacturing who requires from his employees, under penalty or forfeiture of a part of the wages earned by them, a notice of intention to leave such employ shall be liable to a like forfeiture, if, without similar notice, he discharges an employee.
Mass. Gen. Laws ch. 149, § 159
Discharge of employee without notice
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.