It would be a legally operated system. They would still have human rights. However, while in work they should do as they're told as long as it involves the work, common sense can be used.
Not really. They would still have the vote. If they refused to work they'd have their benefits cut for lack of commitment to the cause. They wouldn't be tortured or anything sadistic like that from the old era, they'd be financially penalised for a period.
You think it being government sanctioned makes it automatically ok? The Egyptians rulers kept an entire race as slaves, which obviously was approved by their rulers. Does that makes it ok??
And how the heck do you financially penolise a slave? A slave is not paid for their labour. An employee or servant recieves wages.
Do I really need to point out how utterly stupid this whole thread is? Are you some kind of neo nazi or something? You'll be suggesting herding them "work" camps next.