Well, there are some universal declarations and one very famous one on Human rights which can serve as an example and a criteria for doing fair business all over the world.
But it doesn't matter. What matters is that countries and international and national aviation organizations can restrict carriers if they don't follow certain rules, including human and labour laws and rights and somebody could finally use that fact to negotiate their goals.
Last edited by Nikita81; 6th Feb 2015 at 22:01.