With increasingly relaxed attitudes toward marijuana legalization in the United States, some employers are evaluating their drug screening protocols and wondering if it is time for a change. While most employers in the state agree they do not want to create work environments full of perceived “stoners,” many are questioning whether to allow some reasonable amounts of THC to be present in an employee’s system. The costs of allowing THC in employees’ systems must be measured against the benefits. But it really comes down to this question: What is safe? The answer is that no one really knows. There exists no standard by which to measure.

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