StacksVerified U.S. regulatory reference

29 CFR §1905.21

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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.