This paper presents a new assessment the Stolper-Samuelson Theorem, relaxing the neoclassical hypothesis of perfect factor mobility and wage flexibility. We build a model economy in which some sector face imperfect competition and workers are unionized in those sector, so that wages are not...

The reduction of standard weekly working time from the current level of 44 hours to 40 hours has recently been proposed by the main central unions as a way to create jobs and reduce unemployment in Brazil. The idea, known as work-sharing, is that the reduction in average hours per worker would...