Mass. Gen. Laws ch. 260 § 4C 1/2
An action of tort alleging that the defendant negligently supervised a person who sexually abused a minor or that the defendant's conduct caused or contributed to the sexual abuse of a minor by another person shall be commenced within the later to expire of: (i) 35 years of the acts alleged to have caused an injury or condition to such minor; or (ii) 7 years of the time the victim discovered or reasonably should have discovered that an emotional or psychological injury or condition was caused by such act; provided, however, that the time limit for commencement of such an action under this section shall be tolled for a child until the child reaches 18 years of age. For purposes of this section, "sexual abuse" shall have the same meaning as in section 4C.
Mass. Gen. Laws ch. 260, § 4C 1/2