But my job involves chemical plants and oil refineries, and they use DISA, and DISA drug tests everyone thoroughly.
I can count on getting a test that involves hair, urine, and breath samples at least twice per year. (It's supposed to be annual and random, but "random" seems to be rather heavily-weighted.)
THC hangs out way too long for that.
It's stupid: A person can be completely ripped on booze every night and cocaine occasionally, or live entirely in a world of psychedelic drugs like LSD or mescaline and that's... fine, I guess?
But smoking a bowl will ruin them on those tests.