N.J. Stat. § 52:34-10.8
Contracts awarded for professional services by a State agency, as defined in section 11 of P.L. 2005, c. 336(C.52:34-10.11),shall be contracts only for services rendered or performed by a person authorized by law to practice a recognized profession and whose practice is regulated by law or the performance of which services requires knowledge of an advanced type in a field of learning acquired by a prolonged formal course of specialized instruction and study as distinguished from general academic instruction or apprenticeship and training. Professional services contracts shall also include those services rendered in the provision of goods or performance of services that are original and creative in character in a recognized field of artistic endeavor. Professional services contracts shall also include contracts for extraordinary unspecifiable services if, after evaluation and assessment, such services are determined to be such that they cannot reasonably be described by written specifications.
N.J.S. § 52:34-10.8