29 CFR 18.20 : Labor (§ 0.735-1 To Parts 4908-4999) — (§ 0.735-1 To § 99.530) — Office Of The Secretary Of Labor (§ 0.735-1 To § 99.530) — Rules Of Practice And Procedure For Administrative Hearings Before The Office Of Administrative Law Judges (§ 18.10 To Appendix To Subpart B Of Part 18) — General (§ 18.10 To § 18.95) — Parties And Representatives (§ 18.20 To § 18.24) — Parties to a proceeding.

4 Aug 2016

A party seeking original relief or action is designated a complainant, claimant or plaintiff, as appropriate. A party against whom relief or other action is sought is designated a respondent or defendant, as appropriate. When participating in a proceeding, the applicable Department of Labor's agency is a party or party-in-interest.

29 CFR 18.20