29 CFR § 18.20
Parties to a proceeding
July 28, 2023
§ 18.20 Parties to a proceeding.
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.