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De Pinto, Marco
Year of Publication: 
Series/Report no.: 
IAAEU Discussion Paper Series in Economics 08/2015
What are the effects of firm- and sector-level trade unions on unemployment and aggregate output if individuals have rent-sharing motives? To answer this question, we extend a Melitz-type model to unionized labor markets. Because individual rent-sharing motives are only taken into account and asserted by firm-level unions which capture a higher fraction of firms' rents via firm-specific wages, average profits are higher under sector-level trade unions. As a consequence, firm-selection increases (relative to firm-level unions), which causes average marginal costs to decline. At the general equilibrium, labor demand then, ceteris paribus, increases and unemployment falls. This new mechanism interacts with the negative employment effect due to higher wage markups of sector-level trade unions, as shown e.g. by Calmfors et al. (1988). Simulating our model indicates that the unemployment damping effect of rent-sharing motives mitigates but does not compensate for the unemployment increase caused by higher wage markups, while aggregate output is higher under sector-level agreements.
Trade Unions
Rent-sharing Motives
Bargaining Level
Heterogeneous Firms
Document Type: 
Working Paper

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