I have said this in another post, Western employers love to hire non-Western immigrants because non-Western cultures are still traditional and conditioned to obey authority and hierarchy, and to value work more. And more importantly, this results in a less class conscious population, so non-Westerners are less likely to complain and unionise than their Western counterparts. While the minimum wage in most Western countries is peanuts these days when one considers the worsening cost of living, immigrants think Western minimum wage is CEO-level salary when compared to their home country's basic pay, and thus don't complain for being overworked for little pay by Western standards. Needless to say, Western companies exploit non-Westerners because the latter don't know better.