A Bayesian supply function equilibrium is characterized in a market where firms have private information about their uncertain costs. It is found that with supply function competition, and in contrast to Bayesian Cournot competition, competitiveness is affected by the parameters of the...

This paper examines international trade in tainted food and other low-quality products. Wefirst find that for a large class of environments, free trade is the trading system that conveysthe highest incentives to produce non-tainted high-quality goods by foreign exporters.However, free trade...

In this paper we extend a model by A. Ulph (1997) on the relationship between free trade agreements, environmental regulation and trade under imperfect competition. Ulph's model focused on the effectiveness of harmonisation policies against ecological dumping. It turned out that harmonised...

We consider a multi-sector overlapping generations model with imperfectly competitive firms in the output markets and wage setting trade unions in the labour markets. A coordination problem between firms creates multiple temporary equilibria which are either Walrasian or of the Keynesian...

This paper studies the implication, in terms of welfare and monetary policy, of unequal degrees of competition across members of a currency area. We look at two ways in which the degree of competition in the market for goods can affect welfare in a currency area. One is through different average...

The economic effects of environmental taxes depend on the market structure. Under imperfect competition with free entry and exit, environmental taxes have an impact on economies of scale by changing the number and size of firms. Whether economies of scale rise or fall in a particular industry...

This paper proposes a model of efficiency wage with endogenous workers flows in interaction with imperfect competition on the product markets. Subject to economy-wide shocks, firms hire and fire workers thus generating a certain turnover. We show that the intensity of this turnover negatively...

This paper surveys the link between imperfect competition and the effects of fiscal policy on output, employment and welfare. We examine static and dynamic models, with and without entry under a variety of assumptions using a common analytical framework. We find that in general there is a robust...

The paper examines policy externalities between imperfectly competitive open economies where unemployment prevails in general equilibrium. We develop a two-country and two-sector model with monopolistic competition in the goods market and wage bargaining in the labor market. Policy externalities...