(b) Any active member who has concurrent employment in an additional job or jobs and the additional employment requires the deputy sheriff to be a member of another retirement system which is administered by the Consolidated Public Retirement Board pursuant to article ten-d, chapter five of this code shall make an additional contribution to the fund of eight and one-half percent of his or her monthly salary earned from any additional employment which requires the deputy sheriff to be a member of another retirement which is administered by the Consolidated Public Retirement Board pursuant to article ten-d, chapter five of this code. An additional amount shall be paid to the fund by the concurrent employer for which the member is employed in an amount determined by the board: Provided, That in any year preceding July 1, 2011, the total of the contributions provided in this section, to be paid by the concurrent employer, may not exceed ten and one- half percent of the monthly salary of the employee: Provided, however, That on or after July 1, 2011, the total of the contributions provided in this section, to be paid by the concurrent employer, may not exceed thirteen percent of the monthly salary of the employee. If the board finds that the benefits provided by this article can be funded with a lesser contribution, then the board shall reduce the required member or employer contributions or both. The sums withheld each calendar month shall be paid to the fund no later than fifteen days following the end of the calendar month.
(c) If any change or employer error in the records of any participating public employer or the retirement system results in any member receiving from the system more or less than he or she would have been entitled to receive had the records been correct, the board shall correct the error, and as far as is practicable shall adjust the payment of the benefit in a manner that the actuarial equivalent of the benefit to which the member was correctly entitled shall be paid. Any employer error resulting in an underpayment to the retirement system may be corrected by the member remitting the required employee contribution and the participating public employer remitting the required employer contribution. Interest shall accumulate in accordance with the retirement board reinstatement interest as established in Legislative Rule 162 CSR 7 and any accumulating interest owed on the employee and employer contributions resulting from the employer error shall be the responsibility of the participating public employer. The participating public employer may remit total payment and the employee reimburse the participating public employer through payroll deduction over a period equivalent to the time period during which the employer error occurred.