N.J. Stat. § 34:8C-1
As used in this act:
"Client employer" means a business entity in the construction industry, regardless of its form, that obtains or is provided workers, directly from a labor contractor or indirectly from a subcontractor, to perform labor or services in the construction industry and within its usual course of business, but does not include a client employer employing workers pursuant to a collective bargaining agreement.
"Commissioner" means the Commissioner of Labor and Workforce Development.
"Labor contractor" means any individual, consulting firm, or other entity that supplies, either directly or indirectly, a client employer with workers to perform labor or services in the construction industry and within the client employer's usual course of business, except that "labor contractor" does not include a contractor employing workers pursuant to a collective bargaining agreement, a bona fide labor organization or apprenticeship program, or a hiring hall operated pursuant to a collective bargaining agreement.
"Usual course of business" means the regular and customary work of a business, performed within or upon the premises or worksite of the client employer, or any other place of business of the client employer for which services or labor are performed.
N.J.S. § 34:8C-1