that the default was willful, the court may, in addition to the action required by paragraph (1) of this subsection a., impose a term of imprisonment or participation in a labor assistance program or enforced community service to achieve the objective of the court-imposed financial obligation, restitution, or child support or other support or maintenance ordered by a court. These options shall not reduce the amount owed by the person in default. The term of imprisonment or enforced community service or participation in a labor assistance program in such case shall be specified in the order of commitment. It need not be equated with any particular dollar amount but, in the case of a fine it shall not exceed one day for each $50 of the fine nor shall it exceed a period of 90 consecutive days. In no case shall the total period of imprisonment in the case of a disorderly persons offense for both the sentence of imprisonment and for failure to pay a fine exceed six months.

senior magisterial district judge appointed by the president judge for the purposes of this section may conduct a hearing to determine whether the defendant is financially able to pay. (2) If the issuing authority, senior judge or senior magisterial district judge determines that the defendant is financially able to pay the fine or costs, the issuing authority, senior judge or senior magisterial district judge may turn the delinquent account over to a private collection agency or impose imprisonment for nonpayment, as provided by law.

the hearing, the defendant has the burden of proof to establish to the reasonable satisfaction of the magistrate or circuit judge that the defendant did not willfully fail to pay the fine, costs, or restitution or that the defendant did make a bona fide effort to pay the fine, costs, or restitution.
Failure by the defendant to make such a showing is grounds for being imprisoned or jailed. If the sentence provided for payment of fine or costs only, the term of jail or imprisonment may be no longer than the number of days equal to the total amount of the fine or costs imposed divided by sixty. For purposes of making this computation, any fraction of less than one day shall be dropped from the term of imprisonment. In no event may such imprisonment for failure to pay the fine, costs, and restitution together with all other time served or to be served exceed the maximum allowed by statute.
If the defendant establishes that nonpayment was not willful or that the defendant did make a bona fide effort to pay, the defendant may not be imprisoned or jailed for nonpayment. The magistrate or circuit judge shall consider other alternatives which take into account the state's interest in punishment and deterrence.
The court shall make findings in its decision.