N.J. Stat. § 2B:5-2
The State shall be responsible for the cost of employees necessary for the operation, management and recordkeeping of the Supreme Court, the Appellate Division, the Chancery Division other than the Family Part, and the Office of the Clerk of the Superior Court.
Each county shall provide employees necessary for the operation, management and recordkeeping of the Law Division and Family Part of the Chancery Division of the Superior Court assigned to cases from that county. For the purpose of providing their compensation only, these employees shall be considered to be county employees. Employees who are responsible for overall operation and management of the court system, who are direct and confidential support employees to judges, or who perform duties of a highly technical or specialized nature shall be in the unclassified service.
N.J.S. § 2B:5-2