The common law developed over centuries a small set of default rules that courts have used to fill gaps in otherwise incomplete contracts between commercial parties. These rules can be applied almost independently of context: the market damages rule, for example, requires a court only to know...

Despite recent advances in our understanding of contracting behavior, economic contract theory has yet to identify the principal causes and effects of contract breach. In this Essay, I argue that opportunism is a primary explanation for why commercial parties deliberately breach their contracts....

Research on the law and economics of contract typically analyzes the explicit pricing of the contract terms in a debt contract by modeling a bilateral debtor-creditor relationship, a framework we call the “classical model.” Under this model, contract terms that affect the debtor's repayment...

Rote use of a standard form contract term can erode its meaning, a phenomenon made worse when the process of encrustation introduces various formulations of the term. The foregoing process, when it occurs, weakens the communicative properties of boilerplate terms, leading some terms to lose...

Many scholars believe that notions of fault should and do pervade contract doctrine. Notwithstanding the normative and positive arguments in favor of a fault-based analysis of particular contract doctrines, I argue that contract liability is strict liability at its core. This core regime is...

Rapidly innovating industries are just not behaving the way theory expected. Conventional industrial organization theory predicts that when parties in the supply chain have to make transaction-specific investments, the risk of opportunism will drive them away from contracts and toward vertical...

Market damages - the difference between the market price for goods or services at the time of breach and the contract price - are the best default rule whenever parties trade in thick markets: they induce parties to contract efficiently and to trade if and only if trade is efficient, and they do...

Economic contract theory postulates two obstacles to complete contracts: high transaction costs and high enforcement (or verification) costs. The literature has proposed how parties might solve these problems under a stylized litigation system, but it does not address the question of how parties...