富裕的劳动力输入国和贫穷的劳动力输出国存在互相依赖的关系；但劳动力输入国可以单方面收紧或放松移民或劳动力市场规则，而劳动力输出国永远需要面临不确定性。
Rich labor-importing countries and poor labor-exporting countries have a mutually dependent relationship; but labor importers can unilaterally tighten or loosen immigration or labor-market regulations, leaving exporters in a constant state of uncertainty.