Ariz. Rev. Stat. § 23-415 – Citations

A. If the director, following an inspection or investigation determines that there is reasonable cause to believe that violation exists he shall with reasonable promptness issue a citation to the employer. Each citation shall be in writing and shall contain the following:
1. 1. A particular description of the nature of the violation, including a reference to the provision of this article, or of any standard or regulation alleged to have been violated.
2. 2. A reasonable time for the abatement of the violation.
3. 3. A notice that the employer may request a hearing pursuant to section 23-420 if he is aggrieved by the citation.
B. A certified mail delivery receipt or a signed verification of delivery in person shall be prima facie evidence of receipt of a citation.
C. Each citation issued under this section or a copy or copies thereof shall be prominently posted at or near each place a violation referred to in the citation existed.
D. No citation may be issued after the expiration of a period of six months from the date of the inspection or investigation which produced evidence of the violation.