N.J. Stat. § 24:15-7
All employees of a food, drug or cosmetic establishment who handle the material from which food, drugs or cosmetics intended for distribution or sale are prepared, or the finished product shall, before beginning work and after visiting the toilet, wash their hands and arms thoroughly with clean water and soap. Every person owning or operating a food, drug or cosmetic establishment shall provide adequate facilities for such washing and shall take all reasonable means to compel such employees to perform such washing.
Adequate, conveniently located toilet facilities shall be provided for employees on the premises of a food, drug or cosmetic establishment.
All toilet rooms shall be separate from the rooms where any processes incident to the production, manufacture, preparation, packing, storage, sale or distribution of food, drugs or cosmetics are carried on and shall be kept in a clean and sanitary condition.
N.J.S. § 24:15-7