Ariz. Admin. Code § R2-19-118
All witnesses at the hearing shall testify under oath or affirmation. At the request of a party, or at the discretion of the administrative law judge, the administrative law judge may exclude witnesses who are not parties from the hearing room so that they cannot hear the testimony of other witnesses.
Section adopted by final rulemaking at 5 A.A.R. 563, effective February 3, 1999 (Supp. 99-1).
R2-19- 119. Proof
A. Standard of proof. Unless otherwise provided by law, the standard of proof is a preponderance of the evidence.
B. Burden of proof. Unless otherwise provided by law:
1. The party asserting a claim, right, or entitlement has the burden of proof;
2. A party asserting an affirmative defense has the burden of establishing the affirmative defense; and
3. The proponent of a motion shall establish the grounds to support the motion.
Section adopted by final rulemaking at 5 A.A.R. 563, effective February 3, 1999 (Supp. 99-1).