N.J. Stat. Ann. § 52:13-1

Any joint committee of the legislature, any standing committee of either house, or any special committee directed by resolution to enter upon any investigation or inquiry, the pursuit of which shall necessitate the attendance of persons or the production of books or papers, shall have power to compel the attendance before it of such persons as witnesses and the production before it of such books and papers as it may deem necessary, proper and relevant to the matter under investigation. Any such committee shall also have the power to employ such legal and clerical assistance as it may deem necessary to the proper conduct of the investigation.