Some companies refuse to hire drivers who have failed substance tests in the past. Should you pass your returning drug test, you’ll be allowed to return to work. Pin On Labworks Trucking Guide Some employers have programs through which they allow employees who have failed dot drug test to return to work. How long does a failed dot drug test . The treatment could include meetings, residential or outpatient visits. Does a failed drug or alcohol test go on your record? You may be able to get a job in a trucking company office, though. Individuals progress through drug addiction treatment at various rates, so there is no predetermined length of treatment. Can i refuse a drug test? Any records on negative results or any test ending up being canceled must be kept for one year. Mro calls donor to ask for explanation. A number of things can happen when you fail a dot drug test. However, they will be immediately removed from duty and have to go through the return to duty p...