29 C.F.R. § 4000.13 What methods of issuance may I use?
Title 29 - Labor
(a) In general. You may use any method of issuance, provided you use measures reasonably calculated to ensure actual receipt of the material by the intended recipient. Posting is not a permissible method of issuance under the rules of this part. (b) Electronic safe-harbor method. Section 4000.14 provides a safe-harbor method for meeting the requirements of paragraph (a) of this section when providing an issuance using electronic media.
Title 29: Labor
PART 4000—FILING, ISSUANCE, COMPUTATION OF TIME, AND RECORD RETENTION
Subpart B—Issuance Rules
§ 4000.13 What methods of issuance may I use?