On the distribution of job characteristics: an analysis of the DOT data

We analyse the information in the Dictionary of Occupational Titles to characterize the structure of labour demand. Two dimensions, an intellectual factor and a dexterity factor, capture two-thirds of the variance in job requirements; the remaining (co-)variance cannot be easily structured. Simple linear relationships go a long way in describing the matching between job activities and required worker qualities (Intellect for complex relations to Data and to People, Dexterity for complex relations to Things). There is no dichotomy between mathematical and verbal required skills. Poor working conditions are not restricted to workers in low-level jobs; we find strong support for compensating wage differentials. At more intellectual jobs, men receive less wage compensation for working conditions, while in jobs requiring greater dexterity they receive more. Such a relationship is absent for women

Simulated classical tests in multinomial probit models

Simulated classical tests, GHK simulator, One- and multiperiod multinomial probit models, Monte Carlo simulation,

A Inserção do migrante rural no mercado de trabalho urbano no Brasil: uma análise empírica da importância dos setores informal e formal

Este artigo analisa a inserção do migrante rural-urbano no mercado de trabalho urbano no Brasil. Primeiro, fornece evidências sobre a importância do capital humano para a inserção do migrante brasileiro entre setores formal e informal. Em segundo lugar, investiga se o setor informal funciona como um estágio de transição para os migrantes à procura de um emprego melhor no setor formal e, em terceiro, examina se a alocação do migrante rural-urbano no mercado de trabalho reflete a sua melhor escolha possível, considerando os retornos esperados para as características individuais. Os resultados indicam que a probabilidade de ingresso do migrante no setor formal é diretamente relacionada com a dotação de capital humano, e que há barreiras à entrada em alguns segmentos. As evidências sugerem que boa parte dos migrantes ocupados como assalariados na economia informal procura, após certo tempo de vida nas cidades, um melhor emprego no setor formal

Probability Integrals of the Multivariate "t" Distribution

Results on probability integrals of multivariate "t" distributions are reviewed. The results discussed include: Dunnett and Sobel's probability integrals, Gupta and Sobel's probability integrals, John's probability integrals, Amos and Bulgren's probability integrals, Steffens' non-central probabilities, Dutt's probability integrals, Amos' probability integral, Fujikoshi's probability integrals, probabilities of cone, probabilities of convex polyhedra, probabilities of linear inequalities, maximum probability content, and Monte Carlo evaluation. Copyright 2007 The Authors. Journal compilation (c) 2007 International Statistical Institute.