National law mandates drug testing by employers in safety-sensitive industries such as transportation, aviation, NASA contractors, and the Department of defense. However, in most cases, the state and local law enforcement agencies determine the rights and limitations of an employer in performing a drug test. Oregon does not have any specific law regulating or restricting an employer from conducting drug testing. In 1973 Oregon became the first state t o legalize marijuana , and in 2014 became the first state to decriminalize recreational cannabis. Oregon also became the first state to legalize many drugs by approving two groundbreaking measures, Measure 109 and Measure 110. Measure 109 legalizes the personal possession of psilocybin, commonly referred to as magic mushrooms. Measure 110, on the other hand, decriminalize personal possession of a small amount of common controlled substances like Heroin , Methamphetamine , Cocaine , LSD , MDMA , Oxycodone , and Methadone ....