Mass. Gen. Laws ch. 41, § 111G1/2: Vacations; duration

Section 111G1/2. In any city or town in which the provisions of section one hundred and eleven apply and which accepts this section, any employee thereof who has worked for five years but less than ten years, in the aggregate, shall be granted an annual vacation of three weeks without loss of pay, and any employee thereof who has worked for ten years, in the aggregate, or more shall be granted an annual vacation of four weeks without loss of pay.