Because medical cannabis users are not a protected class, there are no renter protections for those who choose to possess and use medical cannabis.
There are some limited protections for state and local government employees. The Utah Medical Cannabis Act allows these employers to treat medical cannabis use in the same fashion as opioids or opiates, meaning that disciplinary action and/or termination may occur due to impairment or poor job performance.
Private employees are subject to their employer's policies, which may include zero-tolerance for cannabis and/or drug testing.