Maybe we also need a HRAT, a "Human Rights Added Tax", which imposes extra fees based on things like human rights abuses, poverty wages, etc embodied in the production of a product, to provide a level playing field for countries with higher standards.
Or to provide more highly-paid jobs for designers of robots to perform the task without human labor.
You should be a little careful with ideas like that... you may end up hurting the people you're trying to help. In many cases, they'd rather have the crappy, exploitive job than starve while watching the machines do what they used to. The machines will come eventually, but taxes like the one you describe will accelerate the process. In general, taxes and other regulatory inhibitors that are intended to fulfill some social goal are viewed by the market as damage, and routed around if at all possible. That doesn't make them useless, but it does mean that you have to step very carefully.