29 C.F.R. § 417.6
Powers of Administrative Law Judge
The designated Administrative Law Judge shall have authority:
(a) To give notice concerning and to conduct hearings;
(b) To administer oaths and affirmations;
(c) To issue subpoenas;
(d) To rule upon offers of proof and receive relevant evidence;
(e) To take or cause depositions to be taken whenever the ends of justice would be served thereby;
(f) To regulate the course of the hearing;
(g) To hold conferences for the settlement or simplification of the issues by consent of the parties;
(h) To dispose of procedural requests or other matters;
(i) To limit the number of witnesses at hearings, or limit or exclude evidence or testimony which may be irrelevant, immaterial, or cumulative;
(j) If appropriate or necessary to exclude persons or counsel from participation in hearings for refusing any proper request for information or documentary evidence, or for contumacious conduct;
(k) To grant continuances or reschedule hearings for good cause shown;
(l) To consider and decide procedural matters;
(m) To take any other actions authorized by the regulations in this part.