Ariz. Admin. Code § 20-5-619
If the Division Director determines that an inspection is not warranted because there are no reasonable grounds to believe that a violation or danger exists with respect to a complaint in accordance with A.R.S. § 23-408, the Division Director shall notify the complaining party in writing of such determination. The complaining party may obtain review of such determination by submitting a written statement of position with the Industrial Commission and, at the same time, providing the employer with a copy of such statement by certified mail. The employer may submit an opposing written statement of position with the Industrial Commission and, at the same time, provide the complaining party with a copy of such statement by certified mail. Upon the request of the complaining party or the employer, the Industrial Commission, at their discretion, may hold an informal conference in which the complaining party and the employer may orally present their views. After considering all written and oral views presented, the Industrial Commission shall affirm, modify, or reverse the determination of the Division Director and furnish the complaining party and the employer a written notification of their decision and the reasons therefore. The decision of the Industrial Commission shall be final and not subject to further review. Such determination shall be without prejudice to the filing of a new complaint meeting the requirements of A.R.S. § 23-408.
Ariz. Admin. Code § R20-5-619