But how do courts determine what constitutes a material breach of contract? They refer to a legal treatise called the Restatement (Second) of the Law of Contracts. Completed in 1979, this treatise is one of the most frequently cited in the entire United States justice system – every first year law student in the country learns about it. In combination with the Uniform Commercial Code, the Restatement governs all contracts and sets out the following criteria for a material breach of contract.










