42 Pa.C.S. § 7380: Party participation.

(a) Representation.--A party may:

(1) be represented in an arbitration by counsel;

(2) be accompanied by an individual who will not be called as a witness or act as an advocate; and

(3) participate in the arbitration to the full extent permitted under sections 7321.16 (relating to arbitration process) and 7383 (relating to powers and duties of arbitrator).

(b) Ex-parte communications.--A party or representative of a party may not communicate ex parte with the arbitrator except to the extent allowed in a family law proceeding for communication with a judge.