Nike was Seatle protests. Indirectly they probably do.
China receives attention for using prison labor as slave labor.
Nike and most cloths manufactures use a network of subcontracts many who are notorious for these types of behavior. They serve to keep cost down and help the larger companies feign ignorance, plausible deniability was the phrase coined in the Reagan administration I believe. Pressure groups, I think have embarassed them enough where many large companies now issue code of ethics. Some might even enforce them to some degree. But I suspect, somewhere in the world there is someone in a form of slave labor that is making big name clothes that will arrive in a store near you.