(A) Any party may be represented by an attorney who is licensed in Ohio. The attorney shall represent the party at the party's own expense. All attorneys who appear in a representative capacity on behalf of a party must file with the commission, at its Columbus office, a written notice of appearance setting forth:
(1) The attorney's name, address, telephone number and bar number; and
(2) The name and address of the party represented.
(B) An attorney who has not filed an appearance may not address the hearing examiner or sign any briefs, motions or other writings filed with the commission in the matter.
(C) An attorney may only withdraw his or her appearance upon written notice to the commission or hearing examiner assigned.
(D) A natural person party may appear on his or her own behalf.
(E) A partnership may be represented by a partner provided the partner is authorized to do so.
(F) A limited liability company or corporation shall be represented by counsel.