N.J. Stat. § 2A:17-56.14
An obligee who has not established a IV-D case through the probation department shall file an affidavit when applying for the income withholding, stating that the payments not made for support have accrued arrearages in an amount equal to the amount of support payable for 14 days. The probation department shall administer the withholding in accordance with procedures specified for keeping adequate records to document, track, and monitor support payments or establish or permit the establishment of alternative procedures for the collection and distribution of amounts withheld by an entity other than a designated public agency. Alimony, maintenance or child support payments not presently made through the probation department shall be so made upon application of either party unless the other party upon application to the court shows good cause to the contrary.
A monitoring fee of $25.00 annually shall be applied upon the request of either the obligor or obligee for the payment of support through the probation department, regardless of whether or not arrearages exist or withholding procedures have been instituted. The probation department shall monitor all amounts paid and the dates of payments and record them separately. The court and the probation department shall follow the procedures established in this act.
N.J.S. § 2A:17-56.14