论文标题

衡量右审查下的工资不平等

Measuring wage inequality under right censoring

论文作者

Nicolau, João, Raposo, Pedro, Rodrigues, Paulo M. M.

论文摘要

在本文中,我们通过分析相应的尾部指数来研究在工资分布右尾的概率质量中可能发生的潜在变化。在特定的情况下,引入了有条件的尾部指数估计器,该估计量明确允许右尾部审查(顶部编码),这是广泛使用的当前人口调查(CPS)以及其他调查的特征。忽略顶部编码可能会导致尾部指数以及随着时间的流逝的不平等及其进化的陈述估计不一致。因此,具有明确说明此样本特征的尾部索引估计器对于更好地理解和计算工资分布的右尾部中的尾部索引动力学非常重要。本文的贡献是三倍:i)我们引入了一个有条件的尾部指数估算器,该估计值明确处理了顶级编码问题,并评估其有限的样本性能并将其与竞争方法进行比较; ii)我们强调,用于调整顶级工资的因子值随着时间的推移发生了变化,并取决于个人,职业和行业的特征,并提出了合适的价值。 iii)我们使用1992年至2017年的公共用途CPS数据库提供了对美国工资分布右尾部动态的深入实证分析。

In this paper we investigate potential changes which may have occurred over the last two decades in the probability mass of the right tail of the wage distribution, through the analysis of the corresponding tail index. In specific, a conditional tail index estimator is introduced which explicitly allows for right tail censoring (top-coding), which is a feature of the widely used current population survey (CPS), as well as of other surveys. Ignoring the top-coding may lead to inconsistent estimates of the tail index and to under or over statements of inequality and of its evolution over time. Thus, having a tail index estimator that explicitly accounts for this sample characteristic is of importance to better understand and compute the tail index dynamics in the censored right tail of the wage distribution. The contribution of this paper is threefold: i) we introduce a conditional tail index estimator that explicitly handles the top-coding problem, and evaluate its finite sample performance and compare it with competing methods; ii) we highlight that the factor values used to adjust the top-coded wage have changed over time and depend on the characteristics of individuals, occupations and industries, and propose suitable values; and iii) we provide an in-depth empirical analysis of the dynamics of the US wage distribution's right tail using the public-use CPS database from 1992 to 2017.

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