The relationship between labor market concentration and wages in Mexico

  • Ana Cristina Oseguera Sauri El Colegio de México
Keywords: Concentración en el mercado laboral, competencia imperfecta, salarios, monopsonio, productividad
JEL Classification: E24, E26, J31, J42, L4


This paper presents a panel data estimation of the relationship between labor marker concentration and wages. Labor market concentration is measured using the Herfindahl-Hirschman Index (HHI) of employment. In the formal sector, results show that an increase of one standard deviation (3,566 points) of the HHI is associated with an increase in wages of between 2.1% and 2.9%. This elasticity depends on labor productivity. In the informal sector, results show that an increase of one standard deviation (3,242 points) of the HHI is associated with an increase in wages of between 4.5% and 6%. This elasticity depends on capital intensity.


Ashenfelter, O.C., H. Farber y M.R. Ransom. 2010. Modern models of monopsony in labor markets: A brief survey, IZA Discussion Paper No. 1525.

Autor, D., D. Dorn, L. Katz, C. Patterson y J. Van Reenen. 2020. The fall of the labor share and the rise of superstar firms, Quarterly Journal of Economics, 135(2), 645–709.

Azar, J., E. Huet-Vaughn, I.E. Marinescu, B. Taska y T. Von Watcher. 2019a. Minimum wage employment effects and labor market concentration, CEPR Discussion Paper No. DP14239.

Azar, J.A., I.E. Marinescu y M.I. Steinbaum. 2019b. Measuring labor market power two ways, AEA Papers and Proceedings, 109: 317-321.

Azar, J.A., I.E. Marinescu y M.I. Steinbaum. 2020a. Labor market concentration, Journal of Human Resources, published ahead of print.

Azar, J.A., I.E. Marinescu, M.I. Steinbaum y B. Taska. 2020b. Concentration in US labor markets: Evidence from online vacancy data, Labour Economics, 66: 101886.

Barkai, S. 2020. Declining labor and capital shares, Journal of Finance, 75(5): 2421-2463.

Bassanini, A., C. Batut y E. Caroli. 2019. Labor market concentration and stayers' wages: Evidence from France. Working Paper No. 6/2019, Laboratoire d'Economie de Dauphine.

Benmelech, E., N. Bergman y H. Kim. 2020. Strong employers and weak employees: How does employer concentration affect wages?, Journal of Human Resources, published ahead of print.

Bouchot, J. 2018. The implications of a rise in the minimum wage on the Mexican labour market, Tesis doctoral, University of Birmingham.

Brooks, W.J., J.P. Kaboski, A.L. Yao y W. Qian. 2021. Exploitation of labor? Classical monopsony power and labor's share, Journal of Development Economics, 150: 102627.

Card, D., A.R. Cardoso, J. Heining y P. Kline. 2018. Firms and labor market inequality: Evidence and some theory, Journal of Labor Economics, 36(S1): 13-70.

CEA. 2016. Labor market monopsony: Trends, consequences, and policy responses, Council of Economic Advisers Issue Brief, October 2016,

COFECE. 2015. Criterios técnicos para el cálculo y aplicación de un índice cuantitativo para medir la concentración del mercado,

Dube, A., J. Jacobs, S. Naidu y S. Suri. 2020. Monopsony in online labor markets, American Economic Review: Insights, 2(1): 33-46.

Falch, T. 2010. The elasticity of labor supply at the establishment level, Journal of Labor Economics, 28(2): 237-266.

Hempfill, S. y N.L. Rose. 2018. Mergers that harm sellers, Yale Law Journal, 127(7): 2078-2109.

Hershbein, B., C. Macaluso y C. Yeh. 2019. Concentration in U.S. local labor markets: Evidence from vacancy and employment data, 2019 Meeting Papers No. 1336, Society for Economic Dynamics.

Ibarra, C.A. y J. Ros. 2019. The decline of the labour share in Mexico: 1990-2015, World Development, 122: 570-584.

INEGI. 2005. Metodología de los Censos Económicos 2004, México, Instituto Nacional de Estadística y Geografía.

INEGI. 2010. Metodología de los Censos Económicos 2009, México, Instituto Nacional de Estadística y Geografía.

INEGI. 2013. Sistema de Clasificación Industrial de América del Norte, México SCIAN 2013, México, Instituto Nacional de Estadística y Geografía.

INEGI. 2015. Censos Económicos 2014, Metodología, México, Instituto Nacional de Estadística y Geografía.

INEGI. 2019. Sistema Automatizado de Información Censal (SAIC),

Jarosch, G., J.S. Nimczik e I. Sorkin. 2019. Granular search, market structure, and wages, NBER Working Paper No. 26239.

Kaldor, N. 1961. Capital accumulation and economic growth, en F.A. Lutz y D.C. Hague (eds.), The Theory of Capital, Palgrave Macmillan.

Kehrig, M. y N. Vincent. 2021. The micro-level anatomy of the labor share decline, Quarterly Journal of Economics, 136(2), 1031–1087.

Kleiner, M.M. y K.W. Park. 2010. Battles among licensed occupations: Analyzing government regulations on labor market outcomes for dentists and hygienists, NBER Working Paper No. 16560.

Krueger, A.B. y E.A. Posner. 2018. A proposal for protecting low-income workers from monopsony and collusion, Policy Proposal No. 2018-05, The Hamilton Project.

Levy, S. 2018. Esfuerzos mal recompensados: la elusiva búsqueda de la prosperidad en México, Washington D.C., Banco Interamericano de Desarrollo.

Lipsius, B. 2018. Labor market concentration does not explain the falling labor share, Manuscrito Inédito.

Lopez-Acevedo, G. 2003. Wages and productivity in Mexican manufacturing, Policy Research Working Paper No. 2964, World Bank.

Maloney, W.F. 2009. Mexican labor markets: Protection, productivity, and power, en S. Levy y M. Walton (eds.), No Growth Without Equity? Inequality, Interests, and Competition in Mexico, Washington D.C., Palgrave Macmillan-World Bank.

Manning, A. 2005. Monopsony in Motion: Imperfect Competition in Labor Markets, Nueva Jersey, Princeton University Press.

Manning, A. 2011. Imperfect competition in the labor market, en O.C. Ashenfelter y D. Card (eds.), Handbook of Labor Economics, Vol 4(B), 976-1041, Elsevier.

Marinescu, I.E. y E.A. Posner. 2018. A proposal to enhance antitrust protection against labor market monopsony, Roosevelt Institute Working Paper, s/n.

Marinescu, I.E. y H.J. Hovenkamp. 2018. Anticompetitive mergers in labor markets, Research Paper Series No. 18-8, University of Pennsylvania Institute for Law and Economics.

Marinescu, I.E., I. Ouss y L.D. Pape. 2021. Wages, hires, and labor market concentration, Journal of Economic Behavior and Organization, 184(C): 506-605.

Matsudaira, J.D. 2014. Monopsony in the low-wage labor market? Evidence from minimum nurse staffing regulations, The Review of Economics and Statistics 96(1): 92-102.

Naidu, S., E.A. Posner y E.G. Weyl. 2018. Antitrust remedies for labor market power, Research Paper No. 850, University of Chicago Coase-Sandor Institute for Law & Economics.

OCDE, CIAT y BID. 2016. Impuestos Sobre los Salarios en América Latina y el Caribe, OECD Publishing.

Prager, E. y M. Schmitt. 2018. Employer consolidation and wages: Evidence from hospitals, American Economic Review, 111(2): 397-427.

Qiu, Y. y A. Sojourner. 2019. Labor-market concentration and labor compensation, IZA Discussion Paper No. 12089.

Ransom, M.R. y D.P. Sims. 2010. Estimating the firm's labor supply curve in a “new monopsony” framework: Schoolteachers in Missouri, Journal of Labor Economics, 28(2): 331-355.

Rinz, K. 2018. Labor market concentration, earnings inequality, and earnings mobility, CARRA Working Paper Series No. 2018-10.

Rossi-Hansberg, E., P.D. Sarte y N. Trachter. 2020. Diverging trends in national and local concentration, en M. Eichenbaum y E. Hurst (eds.), NBER Macroeconomics Annual 2020, Vol. 35, University of Chicago Press.

SEDATU, CONAPO e INEGI. 2018. Delimitación de las Zonas Metropolitanas de México 2015, México, Secretaría de Desarrollo Agrario, Territorial y Urbano - Consejo Nacional de Población - Instituto Nacional de Estadística y Geografía.

Staiger, D., J. Spetz y C. Phibbs. 2010. Is there monopsony in the labor market? Evidence from a natural experiment, Journal of Labor Economics, 28(2): 211-236.

Webber, D.A. 2015. Firm market power and the earnings distribution, Labour Economics, 35(C): 123-134.

Wilmers, N. 2018. Wage stagnation and buyer power: How buyer-supplier relations affect U.S. workers' wages, 1978 to 2014, American Sociological Review, 83(2): 213-242.

How to Cite
Oseguera SauriA. (2022). The relationship between labor market concentration and wages in Mexico. Estudios Económicos, 37(1).
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