Measuring Labor Market Power in Developing Countries: Evidence from Colombian Plants
利用哥伦比亚工厂和海关数据，估计企业层面的劳动力供给弹性约为2.5，表明工人产出比工资水平高约40%，且该结果由占据当地就业大份额的工厂驱动，符合寡头垄断劳动力市场模型。
How much can employers in low- and middle-income countries suppress wages below marginal productivity? Using plant and customs data from Colombia, we exploit predetermined variation across plants in sales export destinations combined with variation in exchange rates to generate plant-specific shocks to marginal revenue productivity and labor demand. We estimate a firm-level labor supply elasticity of around 2.5, implying that workers produce about 40% more than their wage level. This result is driven by plants that account for a large share of local employment, consistent with an oligopsonistic labor market model.