Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 221, § 80

Court officers receiving stated salaries and deputy sheriffs in attendance upon the supreme judicial, appeals or superior court in Suffolk, Middlesex, Bristol, Norfolk, Hampden and Worcester counties shall, while on duty in said courts, wear uniforms which shall be designated by the court administrator and which shall be furnished at the expense of the commonwealth.