A Tribunal Judge shall apply the rules of evidence as applied in the trial of civil nonjury cases in the superior courts. With respect to Small Claims Division cases, the Tribunal Judge may, when necessary to ascertain facts not reasonably susceptible of proof under such rules, also consider evidence not otherwise admissible if it is of a type commonly relied upon by reasonably prudent persons in the conduct of their affairs.
Ga. Comp. R. & Regs. R. 616-1-3-.20
O.C.G.A. §§ 50-13A-14, 50-13A-14(c), and 50-13A-15(b).