Establishes protection from adverse employment action for authorized medical cannabis patients.

New Jersey's S 4993 prohibits employers from taking adverse actions (like firing, refusing to hire, or discriminating) against employees or job applicants who are registered medical cannabis patients under state law. Employers cannot penalize patients based on their status or a positive cannabis drug test unless they provide clear proof that the patient’s medical cannabis use impaired their job performance. The bill requires employers with drug testing policies to give affected individuals three days to explain a positive test using medical documentation (like a healthcare provider's recommendation or registry card) or request a retest. This law does not override federal restrictions, nor does it permit cannabis use during work hours.