FFS, you literally know next to nothing about the situation. Why do you feel like you're in a position to self righteously adjudicate him as being a criminal? None of us, not even lordnacho himself, know enough about his friend's housekeeper to legitimately make claims like that (or casually throw around terms like slave).
Seriously, the housekeeper's situation may not be too far off from the archetypal startup employee working 18 hour days and sleeping under his desk. None of us know, and none of us should claim to know.