{"data":{"id":"us/29-cfr-1205.4","jurisdiction":"us","citation":"29 CFR 1205.4","heading":"Substantive rules.","body":"The only substantive rules issued by the National Mediation Board are those authorized under section 2, Ninth, of the Railway Labor Act to implement the procedure of determining employee representation.","path":["Title 29—Labor","Subtitle B—Regulations Relating to Labor","CHAPTER X—NATIONAL MEDIATION BOARD","PART 1205—NOTICES IN RE: RAILWAY LABOR ACT"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-29.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:20Z","sha256":"c6a2d5097815f20be9a06d87626289680122cd4cfd4a5ce43edd3e48344dff63","source_id":"us-cfr","stale":true,"prev":"us/29-cfr-1205.3","next":"us/29-cfr-1206.1"},"notice":"GroundRules: Original legal text. Not legal advice."}