In a 2012 statistical finding released by the National Survey in Drug Use and Health , there were 9.8 million full-time Americans adults who use drugs in the workplace including medical marijuana . In a separate study, it is found out that more or less 50% of industrial accidents are related to marijuana consumption. Effects of Marijuana Use in Work Performance Despite the legal regulation of cannabis laboratories and dispensaries in few states, marijuana is still considered an illicit, strictly controlled drug under the federal law. Marijuana use in the workplace greatly affects the individual’s healthy, safety and productivity. Impaired thinking, reduced concentration, loss of balance and decreased reaction time are among the most known adverse affects of marijuana. Thus, every establishment strives for a drug free workplace recognizing the hazardous consequences of its use and its impact to the workers’ productivity. Note : Marijuana traces can be detected through blo