Ariz. Rev. Stat. § 38-820
A. Except as provided in subsection B of this section, a member of the plan who has at least five years of credited service with the plan may receive credited service for periods of active military service performed before employment with the member's current employer if:
C. An active member of the plan who volunteers or is ordered to perform military service may receive credited service for not more than sixty months of military service as provided by the uniformed services employment and reemployment rights act of 1994 (38 United States Code part III, chapter 43). The member's employer shall make employer contributions and the member shall make the member contributions pursuant to subsection D of this section if the member meets the following requirements:
D. Contributions made pursuant to subsection C of this section shall be for the period of time beginning on the date the member began military service and ending on the later of one of the following dates:
F. The employer and the member shall make contributions pursuant to subsection C of this section as follows: