N.J. Stat. Ann. § 26:4B-1

Any place of employment or of public accommodation which maintains public restrooms shall make available at least one-half of the units in each such restroom without charge and shall charge equally for the use of the remaining units designated for men and women. Where a public restroom has only one unit, that unit shall be made available without charge. For the purpose of this act "unit" shall include only toilets and "one-half" means the number of units divided by two, but where such division results in a whole number and a fraction, "one-half" means said whole number.