This paper studies outcomes for workers moving from a poor to a rich economy employing a job tasks based approach. It uses a data case, whereby a worker could decide to work in a richer economy and place himself there by a daily or weekly commute. This set-up faciliates the disentanglement of income differences motives from a plethora of other motives. Thus it eschews the bias inherent in many studies.

The paper emphasizes the idea that tasks are tied to locations, and workers choose a location-task-wage ‘pack.’ The task demanded, which is a bundle of skills, constrains human capital returns for movers. Relatively low task returns generate a substantial offset to the productivity gain for migrants, stemming from the rich economy having higher TFP and capital.

本文研究了采用基于工作任务的方法从贫困经济体转向富裕经济体的工人的结果。它使用一个数据案例，工人可以决定在更富裕的经济体中工作，并通过每天或每周的通勤时间将自己置于那里。这种设置有助于将收入差异的动机与过多的其他动机分开。因此，它避免了许多研究中固有的偏见。

该论文强调了任务与地点相关的想法，工人选择地点-任务-工资“包”。所要求的任务是一系列技能，限制了搬运工的人力资本回报。相对较低的任务回报对移民的生产力提高产生了实质性的抵消，源于富裕经济具有更高的全要素生产率和资本。