Here we go, now that more states are legalizing pot there are somethings people didn't consider...like drug testing at work. A Colorado Appeals Court you can still be fired at your job if you test positive for marijuana, even if you have a medical preseciption. Siding with federal law, which supercedes state law, the court said your employer CAN fire you for testing positive. So hold off from the Cheetos in the vending machine, you don't want to tip your hand. Read more here.