Form, filing and service of papers

(a) Form. (1) The original and two copies of all papers in a proceeding conducted under this subpart shall be filed with the ALJ assigned to the case.

(2) Every pleading and paper filed in the proceeding shall contain a caption setting forth the title of the action, the case number assigned by the ALJ, and a designation of the paper (e.g., motion to quash subpoena).

(3) Every pleading and paper shall be signed by and shall contain the address and telephone number of the representative for the party or the person on whose behalf the paper was filed.

(4) Papers are considered filed when they are mailed. Date of mailing may be established by a certificate from the party or his representative or by proof that the document was sent by certified or registered mail.

(b) Service. A party filing a document with the ALJ shall, at the time of filing, serve a copy of such document on every other party. Service upon any party of any document other than the complaint or notice of hearing shall be made by delivering or mailing a copy to the party's last known address. When a party is represented by a representative, service shall be made upon such representative in lieu of the actual party.

(c) Proof of service. A certificate of the person serving the document by personal delivery or by mail, setting forth the manner of service, shall be proof of service.