Mass. Gen. Laws ch. 6 § 175
A subject shall have the right to inspect, and if practicable, obtain a copy of all criminal offender record information from the department that refers to the subject. The commissioner shall publish and furnish, upon request, guidelines for individuals on how to correct inaccurate or incomplete information. Subject to appropriation, the department shall provide assistance to individuals that have requested assistance to correct inaccurate or incomplete criminal offender record information. Such assistance shall include but not be limited to cooperation with appropriate entities to correct, modify or appropriately supplement criminal offender record information that has been determined to be inaccurate or incomplete. If criminal offender record information is corrected by the office of the commissioner of probation or the courts, any corrections made by such commissioner or court shall be transmitted forthwith to the department and the department's database shall reflect the corrected criminal offender record information.
Requestors shall prescribe reasonable hours and places for subjects to inspect their criminal offender record information under subsection (f) of section 172 and shall impose such additional restrictions as are reasonably necessary both to ensure the record's security and to verify the identities of those who seek to inspect them.
Mass. Gen. Laws ch. 6, § 175