Mass. Gen. Laws ch. 234A § 3
Juror service in the participating counties shall be a duty which every person who qualifies under this chapter shall perform when selected. All persons selected for juror service on grand and trial juries shall be selected at random from the population of the judicial district in which they reside. All persons shall have equal opportunity to be considered for juror service. All persons shall serve as jurors when selected and summoned for that purpose except as hereinafter provided. No person shall be exempted or excluded from serving as a grand or trial juror because of race, color, religion, sex, national origin, economic status, or occupation. Persons with a physical disability shall serve except where the court finds such service is not feasible. The court shall strictly enforce the provisions of this section.
Mass. Gen. Laws ch. 234A, § 234A:3