N.J. Stat. Ann. § 18A:16-4

If the result of any such examination indicates mental abnormality or communicable disease, the employee shall be ineligible for further service until proof of recovery, satisfactory to the board, is furnished, but if the employee is under contract or has tenure, he may be granted sick leave with compensation as provided by law and shall, upon satisfactory recovery, be permitted to complete the term of his contract, if he is under contract, or be reemployed with the same tenure as he possessed at the time his services were discontinued, if he has tenure, unless his absence shall exceed a period of two years.