
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It is deeply rooted in stare decisis, which means to stand by things decided. Common law is largely based on precedent and judicial rulings made in previous similar cases. In a common law jurisdiction, several stages of research and analysis are required to determine what the law is in a given situation. While common law is more flexible than statutory law, it is not entirely malleable. Common law courts are not absolutely bound by precedent, but they can reinterpret and revise the law to adapt to new trends.
| Characteristics | Values |
|---|---|
| Definition | "The body of law derived from judicial decisions, rather than from statutes or constitutions." |
| Basis | Court decisions, not codes or statutes |
| Nature | More flexible than civil law |
| Judicial Precedent | Stare decisis ("to stand by things decided") |
| Sources | Precedent, interpretation, and opinion from judicial authorities and public juries |
| Weight of Decisions | More recent decisions and decisions of higher courts carry more weight |
| Adaptability | Can address situations not originally predicted by lawmakers |
| Efficiency | Court proceedings are shorter as judges need only follow precedent |
| Binding | Decisions of the highest court can generally only be overturned by that same court or through legislation |
| Freedom of Contract | Few provisions are implied into the contract by law |
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What You'll Learn

Common law is adaptable and flexible
Common law is a body of law based on legal precedents established by the courts. It is deeply rooted in stare decisis, which means "to stand by things decided". This means that common law is largely based on precedent—judicial rulings made in previous similar cases. However, common law is not entirely fixed and unchanging.
Secondly, common law evolves gradually over time, through a series of incremental steps. This means that the law can change substantially over a decade or more, without sharp breaks, reducing disruption. For example, higher courts can sometimes overrule prior decisions as "bad law" without needing to wait for lawmakers to pass new statutes or codes. This is in contrast to civil law systems, where changes to statutes and codes may take a long time or never happen at all.
Thirdly, common law is flexible in that it is not absolutely bound by precedent. In certain circumstances, common law courts can reinterpret and revise the law, without legislative intervention, to adapt to new trends in political, legal, and social philosophy. This flexibility is reflected in the quote by Justice Cardozo, who noted that common law "does not work from pre-established truths of universal and inflexible validity to conclusions derived from them deductively". Instead, its method is inductive, drawing its generalizations from particular cases and precedents.
Overall, while common law is based on precedent, it is not a static or rigid system. Its adaptability and flexibility allow it to evolve and respond to changing social, political, and legal landscapes.
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Common law is deeply rooted in stare decisis
Common law, also known as case law or judge-made law, is a body of unwritten laws based on legal precedents established by the courts. It is largely based on precedent—judicial rulings made in previous similar cases. The common law system is less prescriptive than a civil law system. Common law is deeply rooted in stare decisis, which means "to stand by things decided" in Latin. Stare decisis is the doctrine that courts will adhere to precedent in making their decisions. It is a concept that lessens the need for subsequent litigation and further saves the time and energy of the judiciary by preventing them from having to continually decide the same legal question or issue if it has already been decided in another case.
Stare decisis holds that courts and judges should honour precedent, or the decisions, rulings, and opinions from prior cases. Respect for precedents gives the law consistency and makes interpretations of the law more predictable and less seemingly random. The doctrine operates both horizontally and vertically. Horizontal stare decisis refers to a court adhering to its own precedent, while vertical stare decisis refers to a court applying precedent from a higher court. For example, if the Seventh Circuit Court of Appeals adhered to a previous ruling from the U.S. Supreme Court, that would be vertical stare decisis.
However, it is important to note that stare decisis is not an absolute rule. While courts seldom overrule precedent, there are times when the U.S. Supreme Court may not follow precedent, particularly in constitutional cases where prior decisions are "unworkable or are badly reasoned". Additionally, in a case of first impression with no precedent or clear legislative guidance, judges are empowered to resolve the issue and establish new precedent. Furthermore, while common law courts are not absolutely bound by precedent, they can reinterpret and revise the law without legislative intervention to adapt to new trends in political, legal, and social philosophy.
Overall, the concept of stare decisis is deeply rooted in common law and plays a crucial role in promoting legal stability, consistency, and predictability in the judicial system.
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Common law vs civil law
Common law, also known as case law or judge-made law, is a body of unwritten laws based on legal precedents established by the courts. It is largely based on stare decisis, which means "to stand by things decided". Common law originated in England during the Middle Ages and was spread to former British colonies or protectorates, including the United States, Australia, Canada, India, and Hong Kong. Common law systems give great weight to judicial precedent and the style of reasoning inherited from the English legal system. Judicial decisions are binding and can only be overturned by the same court or through legislation. Common law is less prescriptive than civil law, and generally, everything is permitted unless expressly prohibited by law.
Civil law, on the other hand, is a comprehensive, codified set of legal statutes created by legislators. It is a more prescriptive system that aims to create order and reduce bias. Civil law systems are typically found in former French, Dutch, German, Spanish, or Portuguese colonies or protectorates, including much of Central and South America, Central and Eastern Europe, and East Asia. In civil law, judges have a more limited role of applying the law to the case at hand and establishing the facts of the case. Civil law is regularly updated to standardise codes and reduce biased systems where laws are applied differently from case to case.
In terms of contracts, common law systems have extensive freedom of contract, with few provisions implied by law. This means that all terms governing the relationship between the parties must be set out in the contract itself, resulting in longer contracts compared to civil law countries. In civil law systems, there are more provisions implied into contracts, and less emphasis is placed on setting out all the terms in the contract.
The legislative process for common law systems is more challenging to initiate than civil law systems. Once legislation is introduced in a common law system, the process of getting it passed is lengthy and involves multiple steps. In contrast, civil law systems have a more straightforward process for enacting legislation.
In summary, common law systems are based on judicial precedent and give judges an active role in developing rules, while civil law systems rely on codes to cover all eventualities and give judges a more limited role of applying the law. Common law systems are less prescriptive and provide greater freedom of contract, while civil law systems aim for standardisation and reducing bias.
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Common law is a unified legal system
Common law is a body of unwritten laws based on legal precedents established by the courts. It is often more flexible than statutory law, as it can be reinterpreted and revised by the courts without legislative intervention to adapt to new trends. Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries. It is also known as case law or judge-made law.
In a common law jurisdiction, several stages of research and analysis are required to determine "what the law is" in a given situation. This includes ascertaining the facts, locating relevant statutes and cases, and extracting principles, analogies, and statements by various courts. Recent decisions and those of higher courts carry more weight. Ultimately, common law promotes stability and consistency, as everyone involved knows that the outcome will be based on previous caselaw rather than subjective viewpoints.
Common law is one of the two main legal systems used today, the other being civil law. Civil law is a comprehensive, codified set of legal statutes created by legislators, which clearly defines the procedures for handling claims and the punishment for offences. In contrast, common law systems are less prescriptive, and generally allow everything that is not expressly prohibited by law. This flexibility allows common law to respond to changes in society.
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Common law is not absolutely bound by precedent
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It is deeply rooted in stare decisis, a Latin term that means "to stand by things decided". This means that judges need to follow earlier decisions and rulings when dealing with similar cases later. However, common law is not absolutely bound by precedent and can be reinterpreted and revised without legislative intervention under certain conditions.
Common law is primarily developed through judicial decisions rather than statutes. It draws from institutionalized opinions and interpretations from judicial authorities and public juries. While common law is based on precedent, it is more flexible than statutory law. When there is a “case of first impression” with no clear precedent or legislative guidance, judges have the power to resolve the issue and establish new precedents. This flexibility allows common law to adapt to new trends in political, legal, and social philosophy.
For example, in the United States, many states once allowed common-law marriage, which is a legal framework that allows couples to be considered married without a formal marriage license or ceremony. However, societal changes have prompted some states to abolish these statutes, demonstrating how common law can evolve to reflect changing social norms.
Additionally, higher courts in common law systems can overrule prior decisions as "bad law" without waiting for lawmakers to intervene. This adaptability allows common law to address situations that may not have been originally predicted by lawmakers. The decisions of a court are binding only in a particular jurisdiction, and even within a jurisdiction, some courts have more power than others.
In summary, while common law is deeply rooted in precedent, it is not absolutely bound by it. Common law courts have the flexibility to reinterpret and revise the law to adapt to new trends and address unforeseen situations. This adaptability is a key feature of common law systems.
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Frequently asked questions
Common law, also known as case law, is a body of law based on legal precedents established by the courts. Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries.
Civil law is a comprehensive, codified set of legal statutes created by legislators. A civil system clearly defines the cases that can be brought to court, the procedures for handling claims, and the punishment for an offense. Common law, on the other hand, is more flexible and adaptable to unforeseen situations. It promotes stability and consistency in the legal system.
In a common law jurisdiction, several stages of research and analysis are required to determine "what the law is" in a given situation. First, one must ascertain the facts. Then, relevant statutes and cases are located, and principles, analogies, and statements by courts are extracted to predict how the next court will rule. Finally, all the information is integrated to determine "what the law is" and applied to the facts of the case.









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