With the enactment of the Arizona Medical Marijuana Act (AMMA) in 2010, the number of medical marijuana card holders in Arizona is over 65,000 and growing. Chances are your business does or will employ one of them. This article will answer the five most pressing questions facing Arizona employers with the goal of helping them avoid the legal weeds surrounding medical marijuana in the workplace. 1. Can employers discipline or refuse to hire an employee/applicant because he/she is a medical marijuana cardholder? No. The AMMA prohibits employers from discriminating against individuals who are authorized to use medical marijuana. 2. What if the employee/applicant tests positive for marijuana use? Doesn’t matter. Although Arizona employers are permitted to drug test their employees or applicants, the AMMA protects medical marijuana cardholders who test positive for marijuana from adverse employment action based solely on the positive test results.