We implement the core correspondence in Subgame Perfect Equilibrium using a simplesequential mechanism in which firms propose a salary to each worker (in the first stage). Then ,each worker accepts at most one proposal (second stage). Moreover, we show that, if agents'preferences are additive,...

This paper analyzes the problem of designing mechanisms to implement efficient solutions in economies with externalities. We provide two simple mechanisms implementing the Pigouvian Social Choice Correspondence in environments in which coalitions can be formed. Finally, we study economies in...

This paper provides three simple mechanisms to implement allocations in the core of matching markets. We analyze some sequential mechanisms which mimic matching procedures for many-to-one real life matching markets. We show that only core allocations should be attained when agents act...

We characterize the incentive compatible allocation that maximizes the expected social surplus in a single-unit sale when the efficient allocation is not implementable. This allocation may involve no selling when it is efficient to sell. We then show that the English auction always implements...

In this paper we analyze the implementation of socially optimal mergers when the regulator is notinformed about the parameters that determine social and private gains from potential mergers. Wefind that most of the standard tools in dominant strategy implementation, like the revelationprinciple...

We analyze merger policy in an industry where firms participate in a non-tournament R&D competition. We conclude that merger policy should be, in general, less restrictive in high technology markets (pharmaceuticals and telecoms), because mergers reduce the wasteful duplication of R&D...

This paper studies simple hiring procedures for job markets. We show that when agents act strategically only individually rational outcomes should be expected. Moreover, If agents can form unions, thereby gaining the possibility to commit on the decision to be chosen, only stable allocations are...

Horizontal takeovers often occur in waves. A sequence of takeovers is obtained in a Cournotsetting with cost asymmetries. They are motivated by two different reasons: (i) A low realizationof demand increases the profitability of takeovers. (ii) Takeovers raise the profitability of...