Faculty of Economic Sciences, University of Warsaw, Warsaw, Poland.
FAME|GRAPE, Warsaw, Poland.
PLoS One. 2020 Nov 4;15(11):e0241107. doi: 10.1371/journal.pone.0241107. eCollection 2020.
Methods for estimating the scope of unjustified inequality differ in their sensitivity to address institutional and structural deficiencies. In the case of gender wage gaps, adjusting adequately for individual characteristics requires prior assessment of several important deficiencies, primarily whether a given labor market is characterized by gendered selection into employment, gendered segmentation and whether these mechanisms differ along the distribution of wages. Given that countries are characterized by differentiated prevalence of these deficiencies, ranking countries on gender wage gaps is a challenging task. Whether a country is perceived as more equal than others depends on the interaction between the method of adjusting gender wage gap for individual characteristics and the prevalence of these deficiencies. We make the case that this interaction is empirically relevant by comparing the country rankings for the adjusted gender wage gap among 23 EU countries. In this relatively homogeneous group of countries, the interaction between method and underlying deficiencies leads to substantial variation in the extent of unjustified inequality. A country may change its place in the ranking by as much as ten positions-both towards greater equality and towards greater inequality. We also show that, if explored properly, this variability can yield valuable policy insights: changes in the ranking positions across methods inform on the policy priority of the labor market deficiencies across countries in relative terms.
估算不合理不平等程度的方法在解决制度和结构性缺陷方面的敏感度不同。在性别工资差距方面,充分调整个人特征需要预先评估几个重要的缺陷,主要是特定劳动力市场是否存在性别就业选择、性别分割以及这些机制是否沿着工资分布存在差异。鉴于各国存在这些缺陷的不同程度,对性别工资差距进行国家排名是一项具有挑战性的任务。一个国家是否被认为比其他国家更平等,取决于调整性别工资差距的方法与这些缺陷的流行程度之间的相互作用。我们通过比较 23 个欧盟国家调整后的性别工资差距的国家排名,证明了这种相互作用在经验上是相关的。在这个相对同质的国家群体中,方法和潜在缺陷之间的相互作用导致不合理的不平等程度存在很大差异。一个国家的排名可能会因多达十个位置的变化而发生变化——无论是朝着更大的平等还是更大的不平等。我们还表明,如果正确探索,这种可变性可以产生有价值的政策见解:不同方法之间的排名变化反映了各国劳动力市场缺陷的政策重点的相对重要性。