Section 750 ILCS 28/55 - Alternative procedures for service of an income withholding notice(a) The procedures of this Section may be used in any matter to serve an income withholding notice on a payor if: (1) for any reason the most recent order for support entered does not contain the income withholding provisions required under Section 20, irrespective of whether a separate order for withholding was entered prior to July 1, 1997; and(2) the obligor has accrued a delinquency after entry of the most recent order for support.(b) The obligee or public office shall prepare and serve the income withholding notice in accordance with the provisions of Section 25, except that the notice shall contain a periodic amount for payment of the delinquency equal to 20% of the total of the current support amount and the amount to be paid periodically for payment of any arrearage stated in the most recent order for support.(c) If the obligor requests in writing that income withholding become effective prior to the obligor accruing a delinquency under the most recent order for support, the obligee or public office may prepare and serve an income withholding notice on the payor as provided in Section 20. In addition to filing proofs of service of the income withholding notice on the payor and the obligor, the obligee or public office shall file a copy of the obligor's written request for income withholding with the Clerk of the Circuit Court.(d) All other provisions of this Act shall be applicable with respect to the provisions of this Section 55. P.A. 90-673, eff. 1/1/1999.