It's not just so that employers can find out who's using drugs or drinking on the job; it's to make sure that workers are safe at work. With the absence of any federal or provincial definition of a safety sensitive position, it's left to workplace parties to work it out and, ultimately, to litigate this. There are literally hundreds of cases every year fighting about whether a particular position is safety sensitive or not. The statutory definition wouldn't answer everything, but it would give guidance, and that's what needed.
