New Jersey Statutes Title 9. Children Juvenile and Domestic Relations Courts 9 § 6-8.42

If the parent or guardian is not present, the court may proceed to hear a complaint under this act only if the child is represented by a law guardian. If the parent or guardian thereafter makes a motion to the court that a resulting disposition be vacated and asks for a rehearing, the court shall grant the motion on an affidavit showing such relationship or responsibility unless the court finds that the parent or guardian willfully refused to appear at the hearing in which case the court may deny the motion.