We develop a model of wage determination with private information in a unionized imperfectly competitive industry. Under two different bargaining structures (firm-level vs industry-level), we investigate the effects of the degree of product differentiation and the type of market competition...

We consider efficiency wage effects in a union-firm bargaining model with private information. We show that efficiency wage effects do not necessarily increase the wage level at equilibrium. However, if it is commonly known that the union is stronger than the firm and the productivity enhancing...