As of January 2014, Amendment 64 to the constitution of the State of Colorado went into effect. The amendment makes it legal for people over the age of 21 to use and possess up to one ounce of marijuana. Retail stores have begun to legally sell marijuana in that state.
Some Colorado employees have a false sense of security, believing they cannot be fired for using marijuana now that it is legal. Employers, both those in Colorado and other states, are concerned. They wonder if they can still have marijuana use as part of their employment screening background checks when it is legal to use it in Colorado.
Employers worry that the law may interfere with their policies that forbid employees from using marijuana. For example, employees from one state may travel to Colorado on vacation and engage in the lawful activity of smoking marijuana. Since they only engaged in the legal use of the drug, they may believe they cannot be fired for using it legally.
Marijuana can show up in the urine long after the use of the drug. It is possible for an employee to have a positive test weeks after returning from vacation and going back to work in the state where marijuana use is still illegal. The employee’s argument that the use was legal will fall on deaf ears and the person may still be terminated from the job.
Currently, there are several reasons why Colorado employers can still enforce their no marijuana policies and include drug use in their employment screening background checks.
According to the Colorado Court of Appeals, there was no “legislative intent to extend employment protection to those engaged in activities that violate federal law.” Also, since a positive marijuana urine test cannot identify when the marijuana was used and may be positive even weeks after the last use, there is no way to know whether the use was on or off the job.
Even if the legal use would prevent the employee from being fired, there is no way for employees to prove their positive test was the result of legal use of marijuana while on vacation in Colorado. Therefore, a positive marijuana use test may still be a reason for terminating an employee from employment not only in Colorado but in every other state where use is still illegal under federal and state law.
Resources:
http://www.denverpost.com/marijuana/ci_24799683/employers-can-still-fire-pot-smokers-legal-use
http://www.denverpost.com/ci_23104820/colorado-appeals-court-oks-firing-off-duty-marijuana
http://www.regulatemarijuana.org/s/regulate-marijuana-alcohol-act-2012