This paper presents new empirical evidence about the wage gap between union and nonunion workers in Brazil. In principle, due to the rules governing union organization/mobilization, no one should rationally expect such gap. But, as this paper reveals, there is empirical evidence of its existence...

This work studies the wage differentials and determinants ofthe employees in Brazilian agriculture, in period 1981-2005, on the basisof the information of the National Research for Sample of Domicilesof the IBGE. The methodology of Heckman is used to correct bias ofselection, common in wage...