Payments required to be made by the member, the employer, or both under sub-subdivision a. or b. of this subdivision are due by the 15th of the month following the month for which the service credit is allowed and payments made after the due date shall be assessed a penalty, in lieu of interest, of one percent (1%) per month or fraction thereof the payment is made beyond the due date; provided, that these payments shall be made prior to retirement and provided further, that if the member did not become a contributing member within 12 months after completing the educational program and failed to complete three years of subsequent membership service, except in the event of death or disability, any payment made by the member including penalty shall be refunded with regular interest thereon and the service credits cancelled prior to or at retirement.
The members' contributions picked up by an employer shall be designated for all purposes of the Retirement System as member contributions, except for the determination of tax upon a distribution from the System. These contributions shall be credited to the annuity savings fund and accumulated within the fund in a member's account which shall be separately established for the purpose of accounting for picked-up contributions.
Member contributions picked up by an employer shall be payable from the same source of funds used for the payment of compensation to a member. A deduction shall be made from a member's compensation equal to the amount of his contributions picked up by his employer. This deduction, however, shall not reduce his compensation as defined in subdivision (7a) of G.S.135-1. Picked up contributions shall be transmitted to the System monthly for the preceding month by means of a warrant drawn by the employer and payable to the Teachers' and State Employees' Retirement System and shall be accompanied by a schedule of the picked-up contributions on such forms as may be prescribed. In the case of a failure to fulfill these conditions, the provisions of subsection (f)(3) of this section shall apply.
The pick up of employee contributions by an employer as provided for hereunder shall be equally applicable to participant contributions required under the optional retirement program as specified in G.S.135-5.1(c).
For members or beneficiaries electing to make the employee contributions on the retroactive adjustment in compensation or on the underreported compensation, the member's or beneficiary's employer, which granted the retroactive promotion or erred in underreporting compensation and contributions, shall make the required employer contributions. Nothing contained in this subsection shall prevent an employer from paying all or a part of the interest assessed on the employee contributions; and to the extent paid by the employer, the interest paid by the employer shall be credited to the pension accumulation fund; provided, however, an employer does not discriminate against any member or beneficiary or group of members or beneficiaries in his employ in paying all or any part of the interest assessed on the employee contributions due.
In the event the retroactive adjustment in compensation or the underreported compensation is for a period that occurs during the four consecutive calendar years that would have produced the highest average annual compensation pursuant to G.S.135-1(5) the compensation the member or beneficiary would have received during the period shall be included in calculating the member's or beneficiary's average final compensation only in the event the appropriate employee and employer contributions are paid on such compensation.
An employer error in underreporting compensation shall not include a retroactive increase in compensation that occurs during the four consecutive calendar years that would have produced the highest average annual compensation pursuant to G.S.135-1(5) for reasons other than a wrongfully denied promotional opportunity or wrongful demotion where the member is promoted or the demotion is reversed retroactively.
Under rules adopted by the Board of Trustees, the Retirement System shall report monthly to each employer a list of those members for whom the employer made a contribution to the Retirement System in the preceding month that are most likely to require an additional employer contribution should they elect to retire in the following 12 months, if applicable. Reports received under this section shall not be public records. Employers or former employers in receipt of a report under this section shall treat the report, and the information contained within that report, as confidential and as though it were still held by the Retirement System under G.S. 135-6.1.
In the event that an employer fails to submit payment of any required contributions or payments to the Retirement Systems Division, other than the one percent (1%) payment provided for in the first paragraph of this subdivision, within 90 days after the date set by the Board of Trustees, the Board shall notify the State Treasurer of its intent to collect the delinquent contributions and other payments due to the Retirement Systems Division and request an interception of State appropriations due to the participating employer.
Except as provided in this subdivision, upon notification by the Board of Trustees to the State Treasurer and the Office of State Budget and Management as to the default of the employer, the Office of State Budget and Management shall withhold from any State appropriation due to that employer an amount equal to the sum of all delinquent contributions and other debts due to the Retirement Systems Division and shall transmit that amount to the Retirement Systems Division. For the purposes of this subsection, the date set by the Board of Trustees for payment of the contribution-based benefit cap liability shall be 12 months after the member's effective date of retirement, or the first day of the month coincident with or next following six months after the date of the invoice, whichever is later.
N.C. Gen. Stat. § 135-8