His areas of expertise include Labor Economics and Public Economics and Policy. His research is widely cited and has been published in journals such as: Journal of Econometrics, Journal of Applied Econometrics, Economica, Human Resource Management Journal, Review of Income and Wealth, Economics Letters, The Quarterly Review of Economics and Finance, Empirical Economics, Applied Economics, Applied Economics Letters, International Journal of Social Economics, Research on Economic Inequality, Estadistica, Review of Social Economy, Forum for Social Economics, Journal of Socio Economics, Contributions in Economics and Economic History, Journal of Income Distribution, [NAFTA] Law and Business Review of the Americas, International Business and Economics Research Journal, Research in Middle East Economics, Economic Development Quarterly, etc.