Ariz. Rev. Stat. § 38-760
B. The optional retirement benefits available under this section include the following:
1. Joint and survivor life annuity in a reduced amount payable to the retiring member during life, with the provisions that after the member's death all, two-thirds or one-half of the retirement income, as the member elects, shall be continued during the lifetime of the contingent annuitant designated by the retiring member subject to the restrictions prescribed in section 38-764. The amount of retirement income shall be the actuarial equivalent of the retirement income to which the member would be entitled under normal or early retirement. The election in a manner prescribed by the board shall name the contingent annuitant. The election may be revoked at any time before the member's effective date of retirement. At any time after benefits have commenced, the member may name a different contingent annuitant or rescind the election by written notice to the board as follows:
3. Beginning on July 1, 2002, a lump sum payment equal to not more than thirty-six months of the member's retirement benefits based on the actuarial equivalent of the retirement income to which the member would be entitled under normal or early retirement. The member's benefit shall be actuarially reduced to provide for the lump sum payment. The lump sum payment shall be made at the time of retirement. If a member has received an overpayment pursuant to section 38-765 or 38-797.08, ASRS shall withhold the overpayment amount plus any required income tax withholding from the partial lump sum. Any benefit increase granted to a member who elects a lump sum payment pursuant to this paragraph is subject to the following conditions: