Econ Papers Daily / 期刊论文
重访移民剩余
The Immigration Surplus Revisited
摘要
We extend the immigration surplus results of Borjas (1995). In a closed competitive constant-returns economy, we show that an influx of migrants (holding their skill mix fixed) must increase the total real income of natives, for any number of factor inputs, any pattern of substitutability or complementarity between them, and any number of intermediate or final goods – with larger gains if natives and migrants differ more in skill mix. If natives supply labour elastically across skill types, their welfare gains are diminished, even if they respond by moving to higher-paying jobs. We illustrate our results using a US calibration.
中文摘要
我们扩展了Borjas（1995）的移民剩余结果。在一个封闭的竞争性恒定回报经济中，我们证明，移民流入（保持其技能组合不变）必然增加本地居民的总实际收入，无论要素投入数量多少、它们之间替代性或互补性的模式如何，以及中间产品或最终产品的数量多少——如果本地居民与移民在技能组合上的差异越大，收益就越大。如果本地居民在不同技能类型间弹性供给劳动，他们的福利增益会减少，即使他们通过转向更高薪酬的工作来回应。我们使用美国校准来展示我们的结果。