Prohormones and job testing is a whole different ball game. They can't do shit to you for taking a legal substance. In fact, that's one of the problems with nor-andro and other prohormones.
One can't distinguish between someone taking nor-andro and Deca. Even with repeated tests, we don't know how long someone who takes transdermal nor-andro is going to test positive. There's only been data on the oral form thus far.
The whole prohormone issue is to the juicers benefit in a job situation. Sports are different because prohormones are banned. One could even test positive for methandrostenolone (d-bol) and claim it was a prohormone. With all the fly-by-night gray market prohormone companies on the internet, you really never know if someone might spike their prohormones, sell the shit out of them for a few months then disappear.
If someone fires you for taking prohormones, get a good lawyer and tell them to prove beyond a doubt that you’re taking an illegal substance. They can’t. Then ask them for your job back and a substantial cash settlement or else it’s lawsuit time.