
Contract law is a crucial aspect of the legal system, governing the creation and enforcement of agreements between parties. It ensures that promises made are legally binding and enforceable, providing remedies in the event of a breach. With millions of contracts being executed daily, from commercial transactions to social obligations, it is essential to understand the principles and practices of contract law. The best place to start is often a secondary source, such as a treatise or a model law, and there are numerous resources available for those looking to research and understand contract law. These include books, online guides, and academic papers, which cover a range of topics, from the basics of contract formation and interpretation to more specific areas such as insurance contracts, commercial contracts, and educational contracts.
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What You'll Learn

Contract law basics
Contract law is a body of law that governs the creation and enforcement of agreements between parties, ensuring that promises made are legally binding and enforceable in a court of law. It establishes the framework within which contracts are formed, interpreted, and enforced, providing remedies in case of breach. Contracts are a critical part of running a business and are integral to everything from buying a home to signing up for a social media platform.
Sources for Researching Contract Law
There are numerous sources that can be used to research contract law, including study guides, textbooks, and online resources. Georgetown Law Library, for example, provides access to several prominent treatises and study aids, including:
- Contracts by Joseph M. Perillo
- Contracts in a Nutshell by Claude Rohwer, Anthony Skrocki, and Michael Malloy
- Corbin on Contracts by Arthur L. Corbin
- Farnsworth on Contracts by E. Allan Farnsworth
- Adams on Contract Drafting by Victor J. Adams
- Restatement of the Law Second: Contracts by the American Law Institute
The University of Cincinnati also offers a range of study aids for students interested in contract law, including Casenote Legal Briefs for Contracts and Quicknotes, which define legal terms used in the briefs.
Basics of Contract Law
A contract is a legally binding agreement between parties that creates mutual obligations. The basic elements required for a contract to be legally enforceable include:
- Mutual assent, expressed through a valid offer and acceptance
- Adequate consideration, or something of value exchanged between the parties
- Legality
- Capacity of the parties involved
Contracts can be written or verbal, but written contracts are generally preferred as they are easier to reference and less ambiguous. In some cases, statutory law may require certain contracts to be put in writing and executed with specific formalities to be enforceable.
It's important to note that a contract that violates public policy or requires one party to do something illegal is automatically non-binding. Additionally, an unenforceable clause can render part or all of an agreement invalid.
If a contract is breached, the law provides remedies to the harmed party, often in the form of monetary damages or, in limited circumstances, specific performance of the promise made.
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Contract law treatises
There are many resources available for those looking to research contract law. Here is a list of some notable contract law treatises:
Corbin on Contracts
Long called the "classic treatise on contract law," Corbin's work has been revised by Joseph Perillo, but the unique Corbin style has been preserved. Containing more than 90 chapters, the major parts of this multi-volume treatise cover the formation of contracts, the statute of frauds, interpretation, parol evidence, avoidance and reformation, construction and legal operation of contracts, rights of third parties, breach of contracts, judicial remedies, discharge and impossibility, and contracts contrary to public policy.
Farnsworth on Contracts
This multi-volume treatise provides comprehensive coverage and analysis of all aspects of contract law. Williston discusses the law and the reasoning behind it, especially in judicial decisions, and includes historical underpinnings, majority and minority views, and current trends. An extensive forms collection is included in separate print volumes, as well as online.
Contracts by Joseph M. Perillo
This treatise is part of the Hornbook series, providing a detailed treatment of the basic rules, principles, and issues in contracts. Topics covered include offer and acceptance, parol evidence and interpretation, consideration, promissory estoppel, contracts under seal, capacity of parties, conditions, performance, and breach.
Contracts in a Nutshell by Claude Rohwer, Anthony Skrocki, and Michael Malloy
This study guide serves as a preliminary overview of the principles of the law of Contracts and of Sale of Goods in the U.S. Almost one-third of the book covers contract formation, but other topics included are interpretation, defences, modification, and remedies.
Restatement of the Law, Second: Contracts by the American Law Institute
This multi-volume treatise contains black-letter restatements, reporter's notes, and commentaries.
Principles of Contract Law by Robert Hillman
This hornbook provides an overview of contract law, including a discussion of comparative commercial contracts.
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Contract law case studies
There are many resources available for researching contract law, including study guides, textbooks, and case studies.
Textbooks
Textbooks are a great way to get an overview of contract law. They often cover a wide range of topics, from the basic rules and principles of contract law to more advanced topics like the interpretation and enforcement of contracts. Some popular textbooks for contract law include:
- Contracts by Joseph M. Perillo
- Contracts in a Nutshell by Claude Rohwer, Anthony Skrocki, and Michael Malloy
- Contracts Examples & Explanations by Brian A. Blum
- Corbin on Contracts by Arthur L. Corbin
- Farnsworth on Contracts by E. Allan Farnsworth
Study Guides
Study guides are another useful resource for learning about contract law. They often provide a more concise overview of the subject and may include features like glossaries, step-by-step instructions, and quick-reference guides. Some study guides for contract law include:
- Casenote Legal Briefs for Contracts, Keyed to Ayres, Klass, and Stone, Tenth Edition
- Casenote Legal Briefs for Contracts, Keyed to Barnett and Oman, Seventh Edition
- Casenote Legal Briefs for Contracts, Keyed to Farnsworth, Sanger, Cohen, Brooks, and Garvin, Tenth Edition
- Casenote Legal Briefs for Contracts, Keyed to Knapp, Crystal, and Prince, Hart, and Silverstein's Problems in Contract Law: Cases and Materials, Tenth Edition
Case Studies
Case studies are a great way to apply the principles of contract law to real-world situations. They can help you understand how contract law is interpreted and enforced in practice. Here are some examples of contract law case studies:
- Sui v Jiang (2021): This Australian case study illustrates the complications that can arise when parties to a contract prepare the document themselves without legal training, leading to disputes over the intended effect of the contract.
- Lens v Devonshire Club (1914): This case study involves a golf club competition, exploring whether the winner can sue for their prize.
- Mrs Jones v Mrs Jones's Daughter: This case study examines an agreement between a mother and daughter, where the mother offered a monthly allowance to her daughter if she moved to England to study to become a barrister. The case considers whether there was an intention to create legal relations and if the agreement could be deemed binding.
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Contract law in practice
Contract law is a body of law that governs the creation and enforcement of agreements between parties, ensuring that promises made are legally binding and enforceable in a court of law. It establishes the framework within which contracts are formed, interpreted, and enforced, providing remedies in case of breach.
Contract law is based on the principle that people should be secure in the knowledge that promises will be legally enforced when made between persons to provide each party with some sort of benefit. The right to contract is so important that the US Constitution protects it. Article I, section 10, of that document states that freedom to contract may not be abridged.
As societal norms and technologies evolve, contract law adapts to maintain fairness and equity, ensuring that all parties can rely on the promises made, while also imposing protections against unjust enrichment and addressing issues of unequal bargaining power.
There are several key principles of contract law, including freedom of contract, objectivity, the contractual bond principle, estoppel, good faith and fair dealing, and the compensation principle. These principles provide the framework for interpreting and applying contract law in practice.
When researching contract law, it is important to consult reliable sources such as treatises, study guides, and legal databases. Some notable resources include:
- "Contract Law in Practice" by Neil Andrews, an experienced author and Professor of Civil Justice and Private Law at the University of Cambridge. This book provides a comprehensive analysis of English contract law and is considered a valuable resource for commercial lawyers and anyone interested in this area of law.
- "Contracts" by Joseph M. Perillo, which is part of the Hornbook series and covers the basic rules, principles, and issues in contracts, including offer and acceptance, parol evidence, interpretation, consideration, and breach.
- "Farnsworth on Contracts" by E. Allan Farnsworth, a classic coverage of contract law known for its extensive footnotes to case law and secondary sources, as well as its marginal notes for easy reference.
- "Restatement of the Law Second: Contracts" by the American Law Institute, a multi-volume treatise that contains black-letter restatements, reporter's notes, and commentaries.
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Contract law evolution
Contract law is a body of law that governs the creation and enforcement of agreements between parties, ensuring that promises made are legally binding and enforceable in a court of law. It establishes the framework within which contracts are formed, interpreted, and enforced, providing remedies in case of breach.
The evolution of contract law can be traced back to Ancient Greece and Rome, where different types of contracts were recognised depending on the nature of the transaction. For example, in Roman law, there were four categories of consensual agreement and four kinds of contracts creating property rights, such as a pledge or a secured loan. During the Middle Ages, the English court system was minimal, and local and manorial courts dominated. In these courts, disputes over debt payments were resolved through oaths, with the risk of perjury providing strong encouragement to resolve disputes elsewhere.
Over time, the English contract law was influenced by its trading relations with northern Europe, particularly after the Magna Carta, which guaranteed merchants safe and secure entry to England for trade. During the late 17th and 18th centuries, Sir John Holt and Lord Mansfield played pivotal roles in incorporating the principles of international trade law and custom into English common law. They emphasised principles such as commercial certainty, good faith, fair dealing, and the enforceability of seriously intended promises. Lord Mansfield proclaimed, "Mercantile law is not the law of a particular country but the law of all nations".
In the 1800s, the Supreme Court frequently relied on the Contract Clause to strike down state legislation that interfered with existing contract rights. This interpretation of the Contract Clause protected both public and private agreements. However, during the New Deal Era, the Supreme Court's view of the Contract Clause shifted. In Home Building & Loan Ass'n v. Blaisdell, the Court declined to strictly enforce the Contract Clause, upholding the Minnesota Mortgage Moratorium Law during the Great Depression as a necessary response to the economic crisis.
As society and technology continue to evolve, contract law adapts to maintain fairness and equity. The evolution of contract terms is influenced by factors such as efficiency concerns, information, and sequential learning by attorneys over time. There is no one-size-fits-all paradigm for contractual evolution, as different forces affect term evolution in varying strengths across different circumstances.
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Frequently asked questions
The Library of Congress recommends secondary sources such as treatises or model laws. Some introductory books on contract law include:
- *Contract Law Flowcharts and Cases: A Student’s Visual Guide to Understanding Contracts* by Frank J. Doti (2012)
- *Modern Principles of Business Law: Contracts, the UCC, and Business Organizations* by Roger LeRoy Miller (2012)
- *Contract Law for Legal Professionals* by Andrea B.
The Harvard Library has a range of guides on specific aspects of contract law, including:
- *Electronic Discovery: Law and Practice, Second Edition* by Adam Cohen and David Lender
- *The Law of Higher Education, Fifth Edition* by William A. Kaplin and Barbara A. Lee
- *New Appleman on Insurance Law Library Edition* by Jeffrey E. Thomas
- *Callmann on Unfair Competition, Trademarks, and Monopolies*
The Uniform Commercial Code (UCC) is a collection of proposed model laws that govern many contracts in the sale of goods. The UCC can be found in the Library of Congress catalog, and the following resources are recommended:
- *Farnsworth on Contracts* by E. Allan Farnsworth
- *Uniform Commercial Code in a Nutshell* by Bradford Stone and Kristen David Adams
- *The Uniform Laws Annotated*
Other resources on contract law include course syllabi from Case Western Reserve University Law Library, and online resources such as the American Bar Association Committee on Public Education’s ABA Guide to Consumer Law.




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