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Frictional Wage Dispersion in Search Models

其他書名	A Quantitative Assessment
出版	Federal Reserve Bank of Richmond, 2006
URL	http://books.google.com.hk/books?id=UcDszgEACAAJ&hl=&source=gbs_api

註釋"Standard search and matching models of equilibrium unemployment, once prop- erly calibrated, can generate only a small amount of frictional wage dispersion, i.e., wage di erentials among ex-ante similar workers induced purely by search frictions. We derive this result for a speci c measure of wage dispersion the ratio between the average wage and the lowest (reservation) wage paid. We show that in a large class of search and matching models this statistic ("the mean-min ratio") can be obtained in closed form as a function of observable variables (i.e., interest rate, value of leisure, and statistics of labor market turnover). Looking at various independent data sources suggests that, empirically, residual wage dispersion (i.e., inequality among observationally similar workers) exceeds the model's prediction by a factor of 20. We discuss three extensions of the model (risk aversion, volatile wages during employment, and on-the-job search) and nd that, in their simplest version, they can improve its performance, but only modestly. We conclude that either frictions account for a tiny fraction of residual wage dispersion, or the standard model needs to be augmented to confront the data."--Federal Reserve Bank of Richmond web site.