Md. Code, Labor and Employment § 9–715

(a) The Commission may conduct an investigation in the manner that the Commission finds best to:

(1) determine the substantial rights of each party; and

(2) carry out justly the spirit of this title.

(b) Except as otherwise provided in this title, the Commission is not bound by:

(1) any common law or statutory rule of evidence; or

(2) any formal or technical rule of procedure.