Economía - Seriadas

URI permanente para esta colecciónhttp://hdl.handle.net/10906/2349

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A cohort-based analysis of the influence of minimum wage levels on the labor force participation in the informal sector: quantitative and substitution effects
(Universidad Icesi, 2010-12-01) Muro, Juan
This paper discuses the effect of the minimum wage on the decision to join the informal job sector. We estimated a pseudo panel of the engagement in the informal sector using an IV-probit. The findings show that an increase in the minimum wage leads to a substitution effect between young and older workers. This results show that the standards effects over the labor market in the WGM segmented model are moderate because an increase of the minimum wage doesn’t imply total mobility between sectors.
Persistence of informality in a developing conuntry
(Universidad Icesi, 2012-03-29) Mora Rodríguez, Jhon James
Informality is a common phenomenon in developing countries and an unusual one in industrialized countries. The persistence of informal employment is indicative of the impossibility of moving out of this status for a certain period of time. Using pseudo panel data, empirical evidence is presented to show that this phenomenon occurs in a developing country like Colombia where education helps mitigate said persistent occurrence. The authors also present evidence that a minimum salary increase does not only result in increased informality, but also increases the persistence of informality. This kind of evidence can be used for discussing the persistence of informality in other developing countries.
Testing for sample selection bias in pseudo panels : Theory and Monte Carlo
(Universidad Icesi, 2007-03-01) Mora Rodríguez, Jhon James
Sample selection bias is commonly used in economic models based on micro data. Despite the continuous generalization of panel data surveys, most countries still collect microeconomic information on the behavior of economic agents by means of repeated independent and representative cross-sections. This paper discusses a simple testing procedure for sample selection bias in pseudo panels. In the context of conditional mean independence panel data models we describe a pseudo panel model in which under convenient expansion of the original specification with a selectivity bias correction term the method allows us to use a Wald test of Ho:=p0 as a test of the null hypothesis of absence of sample selection bias. We show that the proposed selection bias correction term is proportional to Inverse Mills ratio with an argument equal to the “normit” of a consistent estimation of the observed proportion of individuals in each cohort. This finding can be considered a cohort counterpart of Heckman’s selectivity bias correction for the individual case and generalizes to some extent previous existing results in the empirical labour literature. Monte Carlo analysis shows the test does not reject the null for fixed T at a 5% significance level in finite samples and increases its power when utilizing cohort size corrections as suggested by Deaton (1985). As a “side effect” our method enables us to make a consistent estimation of the pseudo panel parameters under rejection of the null.

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Examinando Economía - Seriadas por Autor "Muro, Juan"