These rules govern formal adversarial adjudications of the United States Department of Labor conducted before a presiding officer.
(a) Which are required by Act of Congress to be determined on the record after opportunity for an administrative agency hearing in accordance with the Administrative Procedure Act, 5 U.S.C. 554, 556 and 557, or
(b) Which by United States Department of Labor regulation are conducted in conformance with the foregoing provisions, to the extent and with the exceptions stated in § 18.1101. Presiding officer, referred to in these rules as the judge, means an Administrative Law Judge, an agency head, or other officer who presides at the reception of evidence at a hearing in such an adjudication.