Rising concentration and wage inequality
研究了近几十年来许多国家出现的工资不平等加剧与生产集中度上升之间的关联，利用14个欧洲国家1999-2016年的行业数据，发现集中度与企业间工资不平等存在显著正相关，且高生产率企业市场份额和工资更高是主要驱动因素。
Abstract Wage inequality has risen in many countries over recent decades. At the same time, production has become increasingly concentrated in a small number of firms. In this paper, we show that these two phenomena are linked. Theoretically, we show that an increase in consumer price sensitivity will lead to an increase in the sectoral concentration of revenues and employment, as well as an increase in wage dispersion between firms within industries. Empirically, we use industry‐level data from 14 European countries over the period 1999–2016 and show robust evidence of a positive and statistically significant correlation between concentration and between‐firm wage inequality. We show that this is driven by higher market shares and higher wages in high‐productivity firms within more concentrated sectors.