Mass. Gen. Laws ch. 138, § 33B: Sales of alcoholic beverages by on-premise licensees on Sundays and certain legal holidays; sales between 10:00 A.M. and 12:00 noon

Section 33B. The local licensing authority of any city or town which accepts this section may authorize licensees under section twelve to sell alcoholic beverages between the hours of 10:00 a.m. and 12:00 noon on Sundays, the last Monday in May and on Christmas day or on the day following when said day occurs on Sunday.