24 CFR § 180.400 - Service and filing.
(a) Service—(1) Service by the Office of Hearings and Appeals. The Office of Hearings and Appeals shall serve all notices, orders, decisions and other such documents by mail to each party and amicus curiae at the last known address.
(2) Service by others. A copy of each filed document shall be served on each party and each amicus curiae. Service shall be made upon counsel if a party is represented by counsel. Service on counsel shall constitute service on the party. Service may be made to the last known address by first-class mail or other more expeditious means, such as:
(i) Hand delivery to the person to be served or a person of suitable age and discretion at the place of business, residence, or usual place of abode of the person to be served;
(ii) Overnight delivery; or
(iii) Facsimile transmission or electronic means. The ALJ may place appropriate limits on service by facsimile transmission or electronic means.
(3) Certificate of service. Every document served shall be accompanied by a certificate of service containing a statement as to the date of service, the method of service, the parties served and the address at which they were served, which is signed and dated by the person making service.
(b) Filing—(1) Method. All documents shall be filed with the Docket Clerk. Filing may be by first class mail, delivery, facsimile transmission, or electronic means; however, the ALJ may place appropriate limits on filing by facsimile transmission or electronic means.
(2) Form. Every pleading, motion, brief, or other document shall contain a caption setting forth the title of the proceeding, the docket number assigned by the Office of Hearings and Appeals, and the designation of the type of document (e.g., charge, motion).
(3) Signature. Every document filed by a party shall be signed by the party or the party's attorney and must include the signer's address and telephone number. The signature constitutes a certification that: the signer has read the document; to the best of the signer's knowledge, information and belief, the statements made therein are true; and the document is not interposed for delay.