[quote name='PhrostByte']I've passed like 20 drug tests already... and I still use drugs. For someone like yourself, I'd say 3 days is enough for you to be clean if you drink water at a regular pace, no special accomodations necessary, 5 days or so if you wanna be safe about it. Friday -> Tuesday = 4 days so I think you'll be fine. THC tends to bind to fat cells... so, don't eat too many fatty foods and try to run (sweat) a little.
Btw, I heard that companies issue drug tests for legal reasons. Mainly, if you're found to fail a drug test after you've already been hired, not only are they not allowed to fire you, but they can choose to send you to mandatory rehap, all while paying for missed time AND your rehap. This is why companies try not to hire crackheads and give out those initial drug tests. Why they give out further drugs tests? I don't know, they'll probably black list you and fire you later for something else...[/quote]
If you're high and you injure yourself, (or worse) someone else, they are legally responsible so it's mostly a safety issue why they would retest certain people. Especially those who are "accident prone".