Briefs may be filed by a party or any interested individual either before or during the course of the hearing, or within such time thereafter as the presiding officer shall designate. Failure to file a brief shall in no way prejudice the rights of any party.
Ga. Comp. R. & Regs. R. 20-14-.37
O.C.G.A. Secs. 43-3-8, 43-3-20, 43-3-21, 43-3-22, 43-3-23, 43-3-24, 43-3-28.