(a) On any substantive matter regarding facts, issues, law, or rules, an arbitrator may not communicate with any party outside the arbitration unless the communication is:

(1) in writing; and

(2) a copy is delivered to all parties to the arbitration.

(b) Notwithstanding subsection (a) of this section, any party may communicate with the arbitrator concerning any procedural matter.

The provisions of this §144.2 adopted to be effective December 31, 1991, 16 TexReg 7358; amended to be effective May 31, 2012, 37 TexReg 3856.