U.S. Job Seekers Test Positive For Drugs At Highest Rate Since 2007, Study Finds

If you eliminate ALL employment drug testing, regardless of how sensitive or dangerous the position being tested for is, you invite the inevitable accident caused by being high or the decreased brain function from years of drug abuse.

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Re-read my comment.  I said, ".....absent a work-related accident/injury".
Read the Article at HuffingtonPost