A Non-Wairasian General Equilibrium Model with Monopolistic Competition and Wage Bargaining

In a general equilibrium framework, this paper tries to reproduce an important stylized fact of real economies: firms set prices under uncertainty while consumption decisions are taken when prices are already known. Under these assumptions, there is place for a quantity rationing equilibrium since preferences are revealed when prices are already set and market-clearing can not be attained through changes in prices. Demand heterogeneity is introduced in the model and related to demand uncertainty: when firms set prices, their own market shares are not known with certainty, even if aggregate and the distribution of market shares are common knowledge. The main properties of the aggregate equilibrium are: a) some markets are constrained while other markets are supply constrained, b) aggregate production is smaller than aggregate and full-employment output, c) there is (involuntary) unemployment, and d) there is a positive spill-over effect from constrained to unconstrained demands. Un modele non-wairasien d'equilibre general en concur rence monopolistique et negociation salariale