Repeated Contracting in Decentralised Markets

We consider a model where multiple principals repeatedly offer short-term contracts to three or more agents with private information. Under low discounting there exists a simple class of mechanisms that sustains all equilibrium allocations that could be generated by arbitrarily complex mechanisms. This equivalence result leads to a simple algorithm for computing equilibrium payoffs; this contrasts with the one-shot setting, where closed form expressions of such payoffs do not exist. Endogenous monitoring by agents weakens incentive compatibility relative to one-shot contracting; this lowers minmax values, expanding the set of equilibrium payoffs.