Iowa Admin. Code r. 495-6.6
6.6(2) If employer and employee contributions were overreported, wage adjustments shall be filed and the appropriate contribution amounts shall be credited to employers for distribution to the respective employee and employer contributors. If the reporting error caused an overpayment of retirement benefits, IPERS may offset excess contributions received against overpayments and shall request a repayment of the remainder of the overpayment, if any, from the recipient.
Wage adjustments, overpayments and underpayments, and unintentional reporting errors shall be determined as of the onset of the error. Notwithstanding the foregoing adjustment and collection standards, IPERS reserves the right to negotiate adjustments with individual employers in special situations, and no negotiated settlement with an employer shall be deemed to constitute a waiver of this rule or a binding precedent for other employers.
IPERS shall use the following guidelines in requiring corrections of overpayments and underpayments of contributions caused by misreported wages or IPERS-covered service. Corrections must be made for all current employees omitted in error, active, retired, and inactive members, subject to the following limitations:
[ARC 4337C, IAB 3/13/19, effective 4/17/19]