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This paper uses Colombian micro-data to analyze the role of education and informality on regional wage differentials. Our hypothesis is that apart from differences in the endowment of human capital across regions, regional heterogeneity in the incidence of informality is another important source of regional wage inequality in developing and emerging countries. This is confirmed by the evidence from Colombia, which in addition reveals remarkable heterogeneity across territories in the wage return to individuals’ characteristics. Regional heterogeneity in returns to education is especially intense in the upper part of the wage distribution. In turn, heterogeneity in the informal pay penalty is more relevant in the lower part.

Regional differences in real wages have been shown to be both large and persistent in the U.S. and the U.K., as well as in the economies of other countries. Empirical evidence suggests that wage differentials adjusted for the cost of living cannot only be explained by the unequal spatial distribution of characteristics determining earnings. Rather, average wage gap decomposition reveals the important contribution made by regional heterogeneity in the price assigned to these characteristics. This paper proposes a method for assessing regional disparities in the entire wage distribution and for decomposing the effect of differences across regions in the endowments and prices of the characteristics. The hypothesis forwarded is that the results from previous studies obtained by comparing average regional wages may be partial and nonrobust. Empirical evidence from a matched employer-employee dataset for Spain confirms marked differences in wage distributions between regions, which do not result from worker and firm characteristics but from the increasing role of regional differences in the return to human capital.

The first objective of this study is to furnish new evidence concerning the aggregate profitability of the accumulation of human capital. In addition to the traditional measure of the return to human capital, combining the information on its shadow price with the social cost of providing education allows us to confirm the profitability of human capital investments as a tool for promoting economic growth. The possibility of obtaining estimations of these effects for each Spanish region enables us to empirically evaluate the amount of heterogeneity across economies in the effects of human capital. As a second objective, we provide evidence on the indirect effect of human capital in making private capital investment more attractive. Among the main explanations for this process, we observe that higher worker skill levels enable higher returns to be extracted from investment in physical capital.

En este trabajo analizamos los cambios en la distribución salarial en España entre 1995 y 2002, utilizando la información contenida en la Encuesta de Estructura Salarial. El análisis revela un notable cambio en la distribución salarial que afecta, básicamente, a los niveles salariales bajos y medios, mientras que los correspondientes a los elevados permanecen inalterados entre ambos años. El análisis detallado de las distribuciones salariales para trabajadores con contrato indefinido y temporal muestra como estos últimos son los protagonistas de las mejoras salariales, mientras que los cambios en los niveles salariales intermedios son causados principalmente por los cambios producidos en la distribución de los trabajadores indefinidos. Empleando una técnica semi-paramétrica que permite considerar los efectos en el conjunto de la distribución salarial, encontramos que las variaciones observadas en las distribuciones salariales son consecuencia de cambios en la estructura retributiva, que han afectado de forma distinta a los trabajadores temporales (mejoras salariales homogéneas) y a los indefinidos, (reducción de los salarios intermedios).

The effect of openness and trade orientation on economic growth remains a highly contentious issue in the literature. Trade facilitates the spread of knowledge and the adoption of more advanced and efficient technologies, which hastens total factor productivity (TFP) growth and, hence, per capita income. New technologies that spread through trade require a sufficiently skilled labour force to adapt them to the domestic productive environment. Thus, openness and human capital accumulation will lead to TFP growth and the greater the complementarity between both variables, the higher the TFP growth. This paper discusses the implications of these assumptions and tests their empirical validity, using a pool of data for manufacturing industry in Spanish regions in a period in which both the stock of human capital and openness experienced a notable increase., El efecto de la apertura y la orientación comercial sobre el crecimiento económico continua siendo un tema controvertido en la literatura. El comercio facilita la difusión de conocimientos y la adopción de nuevas tecnologías que favorecen el crecimiento de la productividad total de los factores (PTF) y, por ende, de la renta. Las nuevas tecnologías foráneas que se difunden a través del comercio necesitan un nivel suficiente de cualificación de la mano de obra en las economías domésticas para poder ser adaptadas a ese nuevo entorno productivo. Por ello, tanto la apertura como el capital humano van a generar incrementos de la PTF, de forma que una mayor complementariedad entre ambos aumentará el crecimiento de dicha productividad. El trabajo analiza las implicaciones de estas hipótesis y contrasta su validez empírica utilizando un pool de datos para el sector industrial en las regiones españolas en un período en el cual tanto el capital humano como la apertura experimentan un notable incremento.

This paper uses micro-level data to analyse the effect of human capital on regional wage differentials. The results for the set of Spanish regions confirm that they differ in the endowment of human capital, but also that the return that individuals obtain from it varies sharply across regions. Regional heterogeneity in returns is especially intense in the case of education, particularly when considering its effect on the employability of individuals. These differences in endowment and, especially, in returns to human capital, account for a significant proportion of regional wage gaps.

This article examines the returns to education taking into consideration the existence of educational mismatches in the formal and informal employment of a developing country. Results show that the returns of surplus, required and deficit years of schooling are different in the two sectors. Moreover, they suggest that these returns vary along the wage distribution, and that the pattern of variation differs for formal and informal workers. In particular, informal workers face not only lower returns to their education, but suffer a second penalty associated with educational mismatches that puts them at a greater disadvantage compare to their formal counterparts.

This paper provides novel empirical evidence of the indirect effect of educational attainment on regional economic growth, through its influence on the profitability of investment in physical capital. We test the hypothesis that the regional heterogeneity of the return to physical capital can be directly related to the existing heterogeneity in the educational attainment of workers. The results for the Spanish case support our hypothesis that the higher the educational attainment of workers the greater the returns on investment in physical capital. In fact, this effect seems to be sufficiently strong to have counterbalanced the traditional mechanism of decreasing returns to capital accumulation.

Regional disparities in unemployment rates are large and persistent. The literature provides evidence of their magnitude and evolution, as well as evidence of the role of certain economic, demographic and environmental factors in explaining the gap between regions of low and high unemployment. Most of these studies, however, adopt an aggregate approach and so do not account for the individual characteristics of the unemployed and employed in each region. This paper, by drawing on micro-data from the Spanish wave of the Labour Force Survey, seeks to remedy this shortcoming by analysing regional differentials in unemployment rates. An appropriate decomposition of the regional gap in the average probability of being unemployed enables us to distinguish between the contribution of differences in the regional distribution of individual characteristics from that attributable to a different impact of these characteristics on the probability of unemployment. Our results suggest that the well-documented disparities in regional unemployment are not just the result of regional heterogeneity in the distribution of individual characteristics. Non-negligible differences in the probability of unemployment remain after controlling for this type of heterogeneity, as a result of differences across regions in the impact of the observed characteristics. Among the factors considered in our analysis, regional differences in the endowment and impact of an individual’s education are shown to play a major role.

The direct effect of human capital on economic growth has been widely analysed in the economic literature. This paper, however, focuses on its indirect effect as a stimulus for private investment in physical capital. The methodological framework used is the duality theory, estimating a cost system aggregated with human capital. Empirical evidence is given for Spain for the period 1980-2000. We provide evidence on the indirect effect of human capital in making private capital investment more attractive. Among the main explanations for this process, we observe that higher worker skill levels enable higher returns to be extracted from investment in physical capital.

Treballs Finals del Màster d'Economia, Facultat d'Economia i Empresa, Universitat de Barcelona, Curs: 2016-2017, Tutor: Enrique López-Bazo, This paper takes a novel approach in estimating the effect of human capital on productivity using a panel data for the NUTS 3 Spanish regions between the years 1996 and 2008. The hypothesis is that, besides the average level of education, how education is distributed in the population also matters to productivity level and growth. We use available data on the share of the population in each level of education to compute measures of inequality and skewness of the distribution in each region. Our findings suggest that inequality in educational attainment and, in particular, the degree of skewness of its distribution matter in explaining the variation in regional productivity.

1) Informality and Overeducation in the Labor Market of a Developing Country This chapter explores the connection between labor market segmentation in two sectors, a modern protected formal sector and a traditional- unprotected-informal sector, and overeducation in a developing country. Informality is thought to have negative consequences, primarily through poorer working conditions, lack of social security, as well as low levels of productivity throughout the economy. This chapter considers an aspect that has not been previously addressed, namely the fact that informality might also affect the way workers match their actual education with that required performing their job. Using micro-data from Colombia the relationship between overeducation and informality is tested. Empirical results suggest that, once the endogeneity of employment choice has been accounted for, formal male workers are less likely to be overeducated. Interestingly, the propensity of being overeducated among women does not seem to be closely related to the sector choice. 2) Double Penalty in Returns to Education: Informality and Educational Mismatch in the Colombian Labor Market This chapter examines the returns to education taking into consideration the existence of educational mismatches in the formal and informal employment of a developing country. Results show that the returns of surplus, required and deficit years of schooling are different in the two sectors. Moreover, they suggest that these returns vary along the wage distribution, and that the pattern of variation differs for formal and informal workers. In particular, informal workers face not only lower returns to their education, but suffer a second penalty associated with educational mismatches that puts them at a greater disadvantage compare to their formal counterparts. 3) Wage Gaps Across Colombian Regions: The Role of Education and Informality This chapter analyzes the role of education and informality on regional wage differentials. The hypothesis that is put under examination is that apart from the difference in the endowments of human capital across regions, regional heterogeneity in the incidence of informality may be another important source of regional wage inequality. The results for Colombian regions confirm marked differences in wage distributions between regions and that they differ in the endowment of human capital and more importantly in the incidence of informality. Regional heterogeneity in returns to education is especially intense in the upper part of the wage distribution. While heterogeneity in the informal pay penalty throughout the territory is more relevant in the lower part of the wage distribution.