With marijuana earning respect from mainstream citizens in support of its legalized use for medical reasons, employers find themselves wondering about its impact on productivity and quality. It is important to be aware of the myths surrounding the use of medical marijuana. First, it is a myth that it is not illegal to use medical marijuana if the state allows it. The fact is, marijuana is illegal under federal law. It also is not entirely true that employees legally using medical marijuana under state law are protected by the Americans with Disabilities Act. In fact, the ADA generally does not protect current users of drugs that are illegal under federal law.