Since Colorado legalized marijuana and other states have moved to follow, more and more workers are testing positive for the drug, according to a new report from Quest Diagnostics.
Since Colorado legalized marijuana and other states have moved to follow, more and more workers are testing positive for the drug, according to a new report from Quest Diagnostics. Kai-Huei Yau McClatchy file photo
Since Colorado legalized marijuana and other states have moved to follow, more and more workers are testing positive for the drug, according to a new report from Quest Diagnostics. Kai-Huei Yau McClatchy file photo

Employee screenings show big jump for marijuana

November 11, 2014 10:40 AM