"They'll do the minimum they can get away with"
No, actually they'll do less than the minimum. After the explosion at Foxconn, Apple moved some of their iPad manufacture to Pegatron - who have an even worse record for workers' rights, if such is possible. Apple don't give a damn, so long as their devices are made for the cheapest price and they make the most money.
Incidentally, during the trial production run at Pegatron there was another minor explosion. It is believed that both explosions were caused by aluminium dust catching fire. Other manufacturers use aluminium backs on their tablets, so why is it only Apple who have assembly-line fires?