Just came across this interesting CNN story.

As more Americans fail drug tests, employers turn to refugees

http://www.cnn.com/2017/03/27/us/refugees-jobs-drug-testing/index.html


"In Colorado, where marijuana is legal, some businesses have told Fay, "they see employees smoking pot on their lunch break and then going back to work."
One oil and trucking company in Colorado did random drug screening last year and flunked 80m% of their employees, mostly for marijuana, Fay said. Colorado's Supreme Court has ruled that companies may fire employees who smoke pot, even if legally."