Binding and Non-Binding Contracts: A Theoretical Appraisal

The article investigates the equilibrium conditions in the choice between legally binding contracts, which are costly to verify and enforce, and non-binding contracts, which simply rely on trust as an enforcement mechanism, in both one-shot and repeated interactions. The returns to effort appear to have an important effect on reputational behavior. The theoretical investigation is accompanied by numerical simulations of the welfare impact of the introduction of a legal system that allows for binding contracts. We find that contract-enforcing institutions mainly produce benefits when effort is particularly valuable, but turn out to be less effective otherwise and even detrimental for a subset of parameters. Finally, reputation unleashes its welfare-enhancing properties especially if non-binding agreements take place when the counterparty’s reliability is very unpredictable.