
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 phrase that means to stand by things decided. In practice, this means that judges need to follow earlier decisions and rulings when dealing with similar cases later. Common law is primarily developed through judicial decisions rather than statutes, and it draws from institutionalized opinions and interpretations from judicial authorities and public juries. It is used in many countries today, including the United States and most member states of the Commonwealth, and it has influenced the legal systems of many former British colonies.
| Characteristics | Values |
|---|---|
| Type of legal system | Common law systems and civil law systems |
| Basis of law | Precedent, also known as stare decisis |
| Basis of civil law | Statutes and codes |
| Sources of law | Judicial decisions, court opinions, and interpretations |
| Sources of civil law | Legislators |
| Flexibility | Open to interpretation |
| Consistency | Stability and consistency due to reliance on precedent |
| Applicability | Common law systems and mixed legal systems |
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What You'll Learn
- Common law is a body of unwritten laws based on legal precedents
- It is deeply rooted in stare decisis, which means to stand by things decided
- Common law is also known as case law or judge-made law
- It is one of the two main legal systems used today, alongside civil law
- Common law promotes stability and consistency in legal systems

Common law is a body of unwritten laws based on legal precedents
Common law is deeply rooted in the principle of stare decisis, a Latin phrase meaning "to stand by things decided". This means that judges in common law systems rely on previous judicial decisions, or precedents, when evaluating future cases. The presiding judge determines which precedents apply to a particular case, and these precedents are binding on lower courts. However, lower courts can deviate from or modify precedents if they are outdated or if the current case is substantially different.
In contrast to civil law systems, common law does not rely on a comprehensive, codified set of legal statutes. Instead, it draws from institutionalised opinions and interpretations from judicial authorities and public juries. While civil law provides clear rules for judges to follow in specific disputes, common law leaves room for interpretation. This feature of common law becomes increasingly important as technology evolves and plays a greater role in our lives.
Common law promotes stability and consistency in legal systems because outcomes are based on previous case law rather than subjective viewpoints. It also provides flexibility, as it can serve as a gap filler in statutory cases where the exact definitions may not be sufficient. For example, in the United States, while common law rules have been largely replaced by legislative statutes, lawyers may still refer to common law definitions to interpret statutes such as the Uniform Commercial Code.
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It is deeply rooted in stare decisis, which means to stand by things decided
Common law is a body of law based on legal precedents established by the courts. It is deeply rooted in stare decisis, which is a Latin phrase that means "to stand by things decided". This means that common law is based on the principle of adhering to previous decisions and rulings, or case law, when dealing with similar cases. This ensures stability and consistency in the legal system, as outcomes are based on previous case law rather than subjective viewpoints.
Stare decisis, as a precedent, is a history of judicial decisions that form the basis for evaluating future cases. In common law, there is no official legal code, so detailed records of similar situations and statutes are relied upon. The judge presiding over a case determines which precedents apply to that particular case. The example set by higher courts is typically binding on cases tried in lower courts, though lower courts can modify or deviate from precedents if they are outdated or if the current case differs substantially.
The common law system gives significant weight to stare decisis, or judicial precedent. This is in contrast to civil law systems, which primarily rely on codes and statutes. Civil law, which originated in mainland Europe, centres around a comprehensive code of statutes that outline procedures and punishments for offences. While civil law is regularly updated, it aims to create order and reduce bias in the system.
Common law, on the other hand, draws from institutionalised opinions and interpretations from judicial authorities and public juries. It aims to establish consistent outcomes by applying the same standards of interpretation. In some cases, precedent depends on the case-by-case traditions of individual jurisdictions. While common law may incorporate certain statutes, it is largely based on precedent and judicial rulings made in previous similar cases.
The term "common law" is not commonly used in the US except in a historical sense, such as referring to "English common law". However, common law definitions can still be used to fill gaps in statutory cases, demonstrating the ongoing influence of this legal principle.
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Common law is also known as case law or judge-made law
Common law, also known as case law or judge-made law, is a body of law based on legal precedents established by the courts. It is deeply rooted in the principle of stare decisis, which means "to stand by things decided". In other words, common law is primarily developed through judicial decisions and rulings made in previous similar cases, rather than statutes or codes. This means that judges presiding over a case determine which precedents to apply to a new case.
The common law system, which originated in England and is now found in the United States and most Commonwealth member states, promotes stability and consistency in legal systems. This is because everyone involved knows that the ultimate outcome will be based on previous caselaw, rather than subjective, personal viewpoints.
Common law is often contrasted with civil law, which is a comprehensive, codified set of legal statutes created by legislators. Civil law clearly defines the cases that can be brought to court, the procedures for handling claims, and the punishments for offences. It is regularly updated, and its standardised codes aim to create order and reduce bias.
Despite the prevalence of civil law in continental Europe and elsewhere, many countries still use the common law system. For example, India is a common law country, and approximately one-third of the world's population lives in common law jurisdictions or in mixed legal systems that integrate common law and civil law.
In some instances, common law has been largely replaced by legislative statutes. However, common law definitions can still be used to fill gaps in statutory cases. For example, while every US state has replaced its common law of contract with the Uniform Commercial Code, the UCC's words may be interpreted through pre-existing common law.
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It is one of the two main legal systems used today, alongside civil law
Common law is one of the two primary legal systems in use today, the other being civil law. Common law is a body of unwritten laws based on legal precedents established by the courts. It is also known as case law, as it draws from institutionalized opinions and interpretations from judicial authorities and public juries. There is no official legal code that can be applied to a case, and the presiding judge determines which precedents to apply in each new case.
Common law is deeply rooted in stare decisis, a Latin phrase meaning "to stand by things decided". This means that judges are required to follow previous decisions and rulings when dealing with similar cases later. For instance, if a court makes a decision based on a specific set of facts, that decision is binding if the court rules on the same or a closely related issue in the future.
The common law system originated in the practices of English royal courts in the centuries following the Norman Conquest. It was then spread across the British Isles and to colonies, and many former colonies retain the common law system today. Common law forms the basis of the modern judicial framework in countries like India. Additionally, some countries have a mixed legal system that integrates both common law and civil law, such as Nicaragua.
Civil law, in contrast, is a comprehensive, codified set of legal statutes created by legislators. It clearly defines the cases that can be brought to court, the procedures for handling claims, and the punishments for offences. Civil law, which originated in mainland Europe, provides a clear framework for judges to rule on specific disputes. Unlike common law, civil law court decisions are not binding in other cases, even if the facts are similar.
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Common law promotes stability and consistency in legal systems
Common law is a body of law based on legal precedents established by the courts. It is deeply rooted in stare decisis, a Latin phrase that means "to stand by things decided". In practice, this means that judges are bound by precedent and must follow previous rulings when dealing with similar cases. This promotes stability and consistency in legal systems in several ways.
Firstly, common law provides stability and consistency because everyone involved knows that the outcome will be based on previous caselaw, not subjective personal viewpoints. This means that parties, especially commercial parties, can predict whether a proposed course of action is likely to be lawful or unlawful, and have some assurance of consistency. This predictability allows parties to come close to the boundaries of the law, creating greater economic efficiency and wealth.
Secondly, common law is adaptable to unforeseen situations that were not contemplated by lawmakers at the time of legislation. This is because common law is based on judicial interpretation, which can respond to changes in society. In contrast, civil law systems require lawmakers to pass changes in statutes and codes, which can be a lengthy process.
Thirdly, common law promotes efficiency in court proceedings. Judges in common law systems need only follow precedent when making decisions, saving everyone time and money. In contrast, jurisdictions with weak respect for precedent must redetermine fine questions of law each time they arise, making consistency and prediction more difficult and procedures more protracted.
Finally, common law allows for flexibility in interpreting the law. While civil law systems have clear rules for how judges need to rule in specific disputes, common law allows judges to interpret the law within the boundaries of precedent. This enables the legal code to adapt to changes in technology and society.
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Frequently asked questions
Common 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 draws from institutionalised opinions and interpretations from judicial authorities and public juries. It relies on detailed records of previous similar situations and statutes, as there is no official legal code that can be applied to a case.
Civil law is a comprehensive set of legal statutes created by legislators. It clearly defines the cases that can be brought to court, the procedures for handling claims, and the punishment for an offence. Civil law systems have clear rules for how judges need to rule for specific disputes. On the other hand, common law systems rely on caselaw and legal precedent to guide their decisions.


























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