7 Pa. Code § 179.16 – Limited discovery.

(a) The ability to obtain discovery in an administrative proceeding before the Commission or presiding officer is committed to the discretion of the Commission or presiding officer and unless otherwise privileged or unavailable, discovery may be granted but limited to the following:
1. (1) Production of documents previously introduced at a Judges/Stewards hearing, if applicable.
2. (2) Production of documents or things to be introduced at the proceeding or hearing, including a list of witnesses.
(b) Requests for the limited discovery above, shall be in writing and shall set forth, with particularity, the information, documents and names of witnesses sought. The written request shall be filed with the presiding officer, if appointed and served upon the Commission’s attorney or the opposing party in sufficient time to allow completion of discovery prior to the hearing.
(c) The Commission or presiding officer may grant the limited request for discovery if the request will serve to facilitate the efficient and expeditious hearing process, and will not unduly prejudice or burden the responding party.
(d) Discovery is not permitted which is sought in bad faith, would cause unreasonable delay, annoyance, embarrassment, burden or expense to the Commission or opposing party.
(e) Each party shall attempt to determine the witnesses they intend to call at the hearing and the names shall be exchanged between parties no later than 3 work days in advance of the hearing. Calling a witness whose name does not appear on the list may be permitted at the discretion of the Commission or presiding officer.
(f) Confidential information, as determined by the Commission, which is furnished to or obtained by the Commission from any source will not be discoverable under this subsection.
(g) Notwithstanding subsections (a)—(f), the parties to the proceeding are encouraged and may, by agreement, and informal basis provide or exchange, or both, the applicable documentation before the proceeding.
(h) Subsections (a)—(g) supersede 1 Pa. Code § § 35.145—35.152 (relating to depositions).