This paper develops a simple model that provides a unified explanation of the increased skewness of wage income distribution based on differences in flexibility of skills--modeled as differences in the setup costs required to combine/perform a given number of tasks. Our numerical experiments in a calibrated model show that, by increasing task variety, a decrease in the fixed costs of entry due to entry deregulation can be a quantitatively important source of both the increase in below-top skewness and the larger increase in within-top skewness. Moreover, the experiments imply that the observed differences in entry deregulation can cause significant differences in the top skewness across countries that have similar technological change. This can provide an answer to Piketty and Saez's (2006) question.

中文翻译：

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入门成本，任务多样性和技能灵活性：（顶部）收入偏斜的简单理论

本文开发了一个简单的模型，该模型基于技能灵活性的差异为工资收入分配的偏斜度提供了统一的解释-建模为组合/执行给定数量的任务所需的设置成本差异。我们在经过校准的模型中进行的数值实验表明，通过增加任务种类，由于取消入境管制而导致的固定入境费用减少可能是上下偏斜增加和上下偏内较大增加的数量上重要的来源。偏度。此外，这些实验表明，观察到的放松进口管制的差异可能会导致技术变化相似的国家之间的最大偏度产生显着差异。这可以为Piketty和Saez（2006）的问题提供答案。