Ruiz-Verdú, Pablo2011-12-072011-12-072007-10Labour economics, 14, 5, oct. 2007, pp. 848-8680927-5371https://hdl.handle.net/10016/12724This article presents a game theoretical model of union organization that highlights the role played by efficiency and asymmetric information as determinants of unionization and questions commonly held assumptions about the effect of firm profitability on unionization decisions. In the model, employers set wages taking into account the effect of their choices on workers' incentives to unionize. As a result of employers' strategic wage setting, collective bargaining emerges in equilibrium only if it increases surplus or if there is asymmetric information about the consequences of unionization. While unionization is usually assumed to be more likely in more profitable firms, the model shows that the probability of unionization will be higher in firms with lower rents. It also shows that the union wage premium and unionization will tend to be negatively correlated.application/pdfeng©Elsevier B.V.UnionizationAsymmetric informationUnion efficiencyProfitabilityresearch articleEmpresa10.1016/j.labeco.2006.08.001open access8485868Labour economics14