N.J. Stat. Ann. § 24:16B-17

For the purposes hereinbefore set forth, the secretary shall cause to be made by inspectors an examination and inspection of animals, carcasses and parts thereof, meat and meat food products prepared in licensed establishments and of the sanitary conditions of licensed establishments and the manner of handling of carcasses, parts thereof and meat and meat food products therefrom by any licensee and, for the purposes of an examination and inspection, said inspectors shall have access to every part of said establishment at any time, whether the establishment is in operation or not.