Product Market Monopolies and Labor Market Monopsonies

Massimiliano Calì and Giorgio Presidente

No 10388, Policy Research Working Paper Series from The World Bank

Abstract: This paper unveils a novel externality of product market regulation in the labor market. It shows theoretically and empirically that higher barriers to entry in product markets translate into higher employers’ labor market power, measured by the wage markdown—the ratio between the marginal product of labor and the wage. The literature suggests that this wedge can distort factor allocation, resulting in lower aggregate output and employment, but also in higher inequality through a reduction in the labor share of national output. Using variation in investment restrictions across 346 manufacturing product markets in Indonesia, the analysis finds that wage markdowns increase by 25 percent in product markets that become subject to investment restrictions. The result is rationalized using a simple oligopsony model in which higher entry costs reduce the equilibrium number of firms, thereby limiting employment options for workers and, hence, their labor market power. Instrumental variable estimates support the model’s prediction that lower entry is the main driver of the positive relationship between investment restrictions and wage markdowns.

Date: 2023-03-29
New Economics Papers: this item is included in nep-com and nep-reg
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