Any party, including the Board, may amend any pleading or notice without leave until the eighth day prior to the date set for the hearing on the matter. Thereafter a party may amend his pleadings only by leave of the Board or its designee and leave shall be freely given when justice so requires. If an amendment is made to a notice of hearing, the answer to said amended notice shall be filed within seven (7) days after service of the amended notice, unless otherwise ordered by the Board or its designee.
Ga. Comp. R. & Regs. R. 480-39-.04
O.C.G.A. §§ 26-4-27, 26-4-28, 50-13-3, 50-13-13.