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Paper #1410

Títol:
Optimally vague contracts and the law
Autors:
Nicola Gennaioli i Giacomo A. M. Ponzetto
Data:
Juny 2015 (Revisió: Gener 2017)
Resum:
Many real-world contracts contain vague clauses despite the enforcement risk they entail. To study the causes and consequences of this phenomenon, we build a principal- agent model in which contracts can include vague clauses whose enforcement may be distorted by opportunistic litigants and biased judges. We find three results. First, the optimal contract is vague, even if courts are very imperfect. Second, the use of vague clauses is a public good: it promotes the evolution of precedents, so future contracts become more complete, incentives higher powered, and surplus larger. Third, as precedents evolve, vague contracts spread from sophisticated to unsophisticated parties, expanding market size. Our model sheds light on the evolution and diffusion of business-format franchising and equity finance.
Paraules clau:
Incomplete Contracts, Contract Enforcement, Optimal Contracts, Legal Evolution, Precedents.
Codis JEL:
D86, K12, K40
Àrea de Recerca:
Macroeconomia i Economia Internacional

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