N.J. Stat. § 2B:24-9
Eligibility for services of the municipal public defender shall be determined by the municipal court on the basis of the need of the defendant, except as provided in section 11 of this act. Need shall be measured according to section 14 of P.L. 1967, c.43 (C.2A:158A-14) and guidelines promulgated by the New Jersey Supreme Court.
In the event that a determination of eligibility cannot be made before the time when the first services are to be rendered, or if an initial determination is found to be erroneous, the municipal court shall refer the defendant to the municipal public defender provisionally, and if subsequently it is determined that the defendant is ineligible the municipal court shall inform the defendant, and the defendant shall be obliged to engage his own counsel and to reimburse the municipality for the cost of the services rendered to that time.
N.J.S. § 2B:24-9