To be on the safe side, host countries often try to limit immigration to skilled workers, because they join segments of the labor market in which sufficient downward wage flexibility provides immigrants with additional jobs. But countries have so far had mixed success in attracting skilled immigrants.
为了保险起见，接收国家经常试图把移民限制在具有一技之长的工人上，因为他们加入到劳动力市场部分之中，而这些部分中足够的压低工资灵活度给移民提供了额外的就业机会。但是各国目前在吸引具有技能的移民上成效不一。这一方面最为成功的都是盎格鲁撒克逊国家(按照顺序是加拿大、爱尔兰、澳大利亚、美国以及英国)，还有丹麦和挪威。