(1) All notices, pleadings, and other papers filed with the presiding officer shall be served upon all counsel and representatives of record and upon unrepresented parties or upon their agents designated by them or by law.

(2) Service shall be made personally or, unless otherwise provided by law, by first-class, registered, or certified mail; by telegraph, by electronic telefacsimile transmission and same-day mailing of copies, or by commercial parcel delivery company.

(3) Service by mail shall be regarded as completed upon deposit in the United States mail properly stamped and addressed. Service by telegraph shall be regarded as completed when deposited with a telegraph company properly addressed and with charges prepaid. Service by electronic telefacsimile transmission shall be regarded as completed upon production by the telefacsimile device of confirmation of transmission. Service by commercial parcel delivery shall be regarded as completed upon delivery to the parcel delivery company with charges prepaid.

(4) Papers required to be filed with the office shall be deemed filed upon actual receipt during office hours at any location of the office. Papers required to be filed with the presiding officer shall be deemed filed upon actual receipt during office hours at the office of the presiding officer.