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。
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.