For 502(c)(2) civil penalty proceedings, this section shall apply in lieu of § 18.10 of this title.

(a) The term “party” wherever used in these rules shall include any natural person, corporation, employee benefit plan, association, firm, partnership, trustee, receiver, agency, public or private organization, or government agency. A party against whom a civil penalty is sought shall be designated as “respondent.” The Department shall be designated as the “complainant.”

(b) Other persons or organizations shall be permitted to participate as parties only if the administrative law judge finds that the final decision could directly and adversely affect them or the class they represent, that they may contribute materially to the disposition of the proceedings and their interest is not adequately represented by existing parties, and that in the discretion of the administrative law judge the participation of such persons or organizations would be appropriate.

(c) A person or organization not named as a respondent wishing to participate as a party under this section shall submit a petition to the administrative law judge within fifteen (15) days after the person or organization has knowledge of or should have known about the proceeding. The petition shall be filed with the administrative law judge and served on each person or organization who has been made a party at the time of filing. Such petition shall concisely state:

(1) Petitioner's interest in the proceeding;

(2) How his or her participation as a party will contribute materially to the disposition of the proceeding;

(3) Who will appear for petitioner;

(4) The issues on which petitioner wishes to participate; and

(5) Whether petitioner intends to present witnesses.

(d) Objections to the petition may be filed by a party within fifteen (15) days of the filing of the petition. If objections to the petition are filed, the administrative law judge shall then determine whether petitioners have the requisite interest to be a party in the proceedings, as defined in paragraph (b) of this section, and shall permit or deny participation accordingly. Where petitions to participate as parties are made by individuals or groups with common interests, the administrative law judge may request all such petitioners to designate a single representative, or he or she may recognize one or more of such petitioners. The administrative law judge shall give each such petitioner as well as the parties, written notice of the decision on his or her petition. For each petition granted, the administrative law judge shall provide a brief statement of the basis of the decision. If the petition is denied, he or she shall briefly state the grounds for denial and shall then treat the petition as a request for participation as amicus curiae.