In this paper, we study whether or not transportation infrastructure disrupts local monopsony power in labor markets using an expansion of the national highway system in India. Using panel data on manufacturing firms, we find that monopsony power in labor markets is reduced among firms near newly constructed highways relative to firms that remain far from highways. We estimate that the highways reduce labor markdowns significantly. We use changes in the composition of inputs to identify these effects separately from the reduction in output markups that occurs simultaneously. The impacts of highway construction are therefore pro-competitive in both output and input markets and act to increase the share of income that labor receives by 1.8–2.3 percentage points.

在本文中，我们通过扩展印度的国家公路系统来研究交通基础设施是否会扰乱劳动力市场的当地垄断力量。使用制造企业的面板数据，我们发现，相对于远离高速公路的企业，靠近新建高速公路的企业在劳动力市场上的垄断力量有所降低。我们估计高速公路显着减少了劳动力降价。我们使用输入组成的变化来识别这些影响与同时发生的输出标记的减少。因此，高速公路建设的影响在产出和投入市场都具有促进竞争的作用，并将劳动力收入份额提高 1.8-2.3 个百分点。