N.J. Stat. Ann. § 44:8-121

15. When a person shall apply for public assistance for himself or his dependents, the municipal or county director of welfare, as appropriate, shall inquire into the facts, conditions and circumstances of the case, including customary place of abode, family connections, living conditions, resources, income, and causes direct and indirect of the person's need, and such other matters as the commissioner may require, making a written record thereof in such manner as may be prescribed by the commissioner. Upon ascertainment of the foregoing facts, conditions and circumstances, the municipal or county director of welfare, as appropriate, shall render assistance to an eligible applicant or his dependents. The cost of public assistance shall be borne by the State.