The objective of this paper is to analyze the determinants of off-farm labor supply by heads of household and their spouses in Nicaragua. Using a three-year balanced panel dataset, we refine the approach introduced by Jacoby (1993) and Skoufias (1994) to estimate shadow wages and shadow income,...

A rich literature on the analysis of efficiency in production has developed since pioneering work of Tjalling Koopmans and George Debreu in the 1950s. This literature includes work by researchers in economics, econometrics, management science, operations research, mathematical statistics and...