49 C.F.R. § 209.209 – Hearing.

(a) When a respondent files a reply contesting allegations in a notice of investigation issued under § 209.203 or when the FRA and the respondent fail to agree upon an acceptable consent order, the hearing officer designated by the Chief Counsel convenes and presides over a hearing on the proposed compliance order.
(b) The presiding official may:
1. (1) Administer oaths and affirmations;
2. (2) Issue subpoenas as provided by § 209.7;
3. (3) Adopt procedures for the submission of evidence;
4. (4) Take or cause depositions to be taken;
5. (5) Rule on offers of proof and receive relevant evidence;
6. (6) Examine witnesses at the hearing;
7. (7) Convene, recess, reconvene, ad- journ and otherwise regulate the course of the hearing;
8. (8) Hold conferences for settlement, simplification of the issues or any other proper purpose; and
9. (9) Take any other action authorized by or consistent with the provisions of this subpart pertaining to compliance orders and permitted by law which may expedite the hearing or aid in the disposition of an issue raised therein.
(c) The Chief Counsel has the burden of providing the facts alleged in the notice of investigation and may offer such relevant information as may be necessary fully to inform the presiding officer as to the matter concerned.
(d) The respondent may appear and be heard on his or her own behalf or through counsel of his or her choice. The respondent or his or her counsel may offer relevant information, including testimony which he or she believes should be considered in defense of the allegations or which may bear on the remedial action being sought, and conduct such cross-examination as may be required for a full disclosure of the material facts.
(e) At the conclusion of the hearing or as soon thereafter as the hearing officer shall provide, the parties may file proposed findings and conclusions, together with supporting reasons therefor.