Mass. Gen. Laws ch. 6E, § 3
(a) The commission shall have all powers necessary or convenient to carry out and effectuate its purposes, including, but not limited to, the power to:
(28) adopt, amend or repeal regulations in accordance with chapter 30A for the implementation, administration and enforcement of this chapter, including, but not limited to, regulations:
(iv) establishing a physical and psychological fitness evaluation pursuant to section 4 that measures said fitness to ensure officers are able to perform essential job duties; and (v) identifying patterns of unprofessional police conduct, including, but not limited to, patterns of: