{"data":{"id":"us-ma/mass.-gen.-laws-ch.-149-12","jurisdiction":"us-ma","citation":"Mass. Gen. Laws ch. 149, § 12","heading":"Regulations prevailing over regulations of workmen's compensation insurer","body":"Section 12. If any rule or regulation made under authority of section sixty-four of chapter one hundred and fifty-two conflicts with or differs from a rule or regulation of the department, its rule or regulation shall prevail.","path":["Part I","Title XXI","Chapter 149"],"source_url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXXI/Chapter149/Section12","current_through":"amendments passed before May 31, 2026","vintage":"","retrieved_at":"2026-09-17T05:23:27Z","sha256":"8d50db2a03a1bd62e536bf31d0a04fa7bd3325445df1cf3a47d0a3cd5a4813c9","source_id":"us-ma","stale":false,"prev":"us-ma/mass.-gen.-laws-ch.-149-11a","next":"us-ma/mass.-gen.-laws-ch.-149-13"},"notice":"GroundRules: Original legal text. Not legal advice."}