Quest Diagnostics, a company that has been performing employment related drug test has documented a 20 percent growth in positive tests of legalized recreational marijuana in the state of Colorado. Reported by the Coloradoan, the increase was from 2012 to 2013, the first year of legalized recreational marijuana usage. Though the actual sample size was not released, Quest Diagnostics has conducted about 100,000 tests in Colorado every year since 2005. With the increase, there is no evidence of employers changing their testing patterns to find employees who are partaking in recreational use. However Mason Tvert, the Denver-based communications director for the Marijuana Policy Project believes it's an employer problem not and employee problem.

"It would appear the only thing that's actually causing harm to people is these companies' drug testing policies, not employees using marijuana in their off hours,"

I don't really know what people expected to happen when the law was passed. However the argument between employers and employees rights is going to to continue to be at the forefront of this argument as long as marijuana is still considered a controlled substance by the federal government. It is also going to be an issue until law enforcement an science can come up with an appropriate timely manner to dictate how backed someone is and if they are currently in a condition that would put the people around them in harms way in the work place.

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