{"data":{"id":"us/29-cfr-1905.21","jurisdiction":"us","citation":"29 CFR 1905.21","heading":"Manner of service.","body":"Service of any document upon any party may be made by personal delivery of, or by mailing, a copy of the document to the last known address of the party. The person serving the document shall certify to the manner and the date of the service.","path":["Title 29—Labor","Subtitle B—Regulations Relating to Labor","CHAPTER XVII—OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","PART 1905—RULES OF PRACTICE FOR VARIANCES, LIMITATIONS, VARIATIONS, TOLERANCES, AND EXEMPTIONS UNDER THE WILLIAMS-STEIGER OCCUPATIONAL SAFETY AND HEALTH ACT OF 1970","Subpart C—Hearings"],"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":"7eb43928f4920edd5a11c37dd2cdda682eacfc92867a2b0334dfea2602b6f41c","source_id":"us-cfr","stale":true,"prev":"us/29-cfr-1905.20","next":"us/29-cfr-1905.22"},"notice":"GroundRules: Original legal text. Not legal advice."}