[Firestormalpha]

The root of the problem is that discrimination is extremely difficult to prove, especially in such an indirect manner. It's hard enough to prove that your boss said you were fired because you're the wrong religion, political party, sexual orientation, gender, or nationality. Typically because you aren't thinking ahead of time, "I'd better record this, I think they're going to fire me for a discriminatory reason." And far more often because most employers are smart enough not to express such a reason. Not that it can't be proven, but you'd need records of the events, corroboration by witnesses, etc. Discrimination isn't an easy case to make.