{"data":{"id":"us-ma/mass.-gen.-laws-ch.-150a-4b","jurisdiction":"us-ma","citation":"Mass. Gen. Laws ch. 150A, § 4B","heading":"Refusal to bargain collectively with employer","body":"Section 4B. It shall be an unfair labor practice for a labor organization to refuse to bargain collectively with any employer who has recognized it as the exclusive representative of employees in a unit appropriate for the purposes of collective bargaining.","path":["Part I","Title XXI","Chapter 150A"],"source_url":"https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXXI/Chapter150A/Section4B","current_through":"amendments passed before May 31, 2026","vintage":"","retrieved_at":"2026-09-17T05:23:31Z","sha256":"8726a168250adc6cef19201bc84e4de61a16b2041d416d788aac34e363ddbd25","source_id":"us-ma","stale":false,"prev":"us-ma/mass.-gen.-laws-ch.-150a-4a","next":"us-ma/mass.-gen.-laws-ch.-150a-4c"},"notice":"GroundRules: Original legal text. Not legal advice."}