
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It is primarily developed through judicial decisions rather than statutes. Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries. It is deeply rooted in stare decisis, which means to stand by things decided. Common law is one of the two main legal systems used today, the other being civil law. Common law is practiced in several countries, including the United States, the United Kingdom, Canada, and Australia. Law school classes teach students the skills and outcomes required for success, such as transaction-oriented skills, litigation-oriented training, and legal research and writing.
| Characteristics | Values |
|---|---|
| Definition | Common law is a body of law based on legal precedents established by the courts. |
| Basis | Common law is based on precedent—judicial rulings made in previous similar cases. |
| Sources | Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries. |
| Flexibility | Common law is more flexible than civil law as it can respond to changes in society and does not require lawmakers to pass changes in statutes and codes. |
| Judicial decisions | Judicial decisions are binding and can only be overturned by the same court or through legislation. |
| Contract provisions | Few provisions are implied into a contract by law, and it is important to set out all the terms governing the relationship between the parties in the contract itself. |
| Freedom of contract | There is extensive freedom of contract in common law systems, and generally, everything is permitted that is not expressly prohibited by law. |
| Prescriptiveness | Common law systems are less prescriptive than civil law systems. |
| Adaptability | Common law is adaptable to unforeseen situations as it is not limited to statutes and rules created by lawmakers. |
| Efficiency | Common law promotes efficiency as judges only need to follow precedent, leading to shorter court proceedings and reduced costs. |
| Consistency | Common law promotes consistency as outcomes are based on previous case law rather than subjective viewpoints. |
| Stability | Common law provides stability as it relies on established precedents. |
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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 deeply rooted in stare decisis, a Latin term that means "to stand by things decided". Common law originated in medieval England and was spread to former British colonies or protectorates, including the United States, Australia, Canada, India, and New Zealand. In a common law system, judicial decisions are binding, and courts follow precedents established by previous decisions. Common law is more flexible and adaptable than civil law, as it can respond to changes in society without requiring changes to statutes and codes.
On the other hand, civil law is a comprehensive, codified set of legal statutes created by legislators. Civil law is rooted in the Roman Empire and was later disseminated in the 19th century through codes such as France's Napoleonic Code and Germany's Bürgerliches Gesetzbuch. It is the world's most common legal system, practiced in about 150 countries. Civil law is generally more prescriptive than common law, providing clear rules and procedures for handling claims and determining punishments for offences. It relies primarily on codes and statutes rather than judicial precedent, although it may also be influenced by local customs and laws.
One key difference between common law and civil law is their approach to precedent. Common law systems heavily emphasize stare decisis, where courts are bound by previous rulings when dealing with similar cases. In contrast, civil law judges tend to give less weight to judicial precedent and may interpret and apply the law more freely. This flexibility in civil law allows for the consideration of local customs and laws, but it may also lead to inconsistencies in the application of laws.
Another distinction lies in their level of prescription. Common law is less prescriptive, requiring all terms governing a contractual relationship to be explicitly stated in the contract itself. In contrast, civil law implies various provisions into a contract, such as equal bargaining provisions or protections for private consumers. This results in shorter contracts in civil law jurisdictions, as ambiguities and inadequacies can be resolved by operation of law rather than detailed contractual terms.
In terms of efficiency, common law systems may offer advantages due to their reliance on precedent. Judges in common law courts can save time and resources by following established precedents, whereas civil law judges may need to interpret the law independently for each case, potentially requiring more legislative intervention. However, civil law's comprehensive codification of statutes provides clarity and predictability, reducing potential biases and inconsistencies in the application of laws.
In conclusion, common law and civil law represent two distinct legal traditions with unique characteristics. Common law, prevalent in former British colonies, emphasizes judicial precedent and stare decisis, offering flexibility and efficiency. Civil law, widely practiced in Europe and its former colonies, relies on codified statutes and provides a more prescriptive framework, prioritizing consistency and clarity in the legal process.
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Common law marriages
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. Common law is deeply rooted in stare decisis ("to stand by things decided"), where courts follow precedents established by previous decisions.
In Canada, while some provinces may extend to couples in marriage-like relationships many of the rights and responsibilities of a marriage, they are not legally considered married and may be defined as "unmarried spouses". In the U.K., 51% of respondents to a 2008 poll incorrectly believed that cohabitants had the same rights as married couples. Scotland does not recognize common-law marriage, although there was a type of irregular marriage called 'marriage by cohabitation with habit and repute' which was abolished in 2006.
In England, common-law marriages were abolished by the Marriage Act of 1753, which required marriages to be performed by a priest of the Church of England. However, this did not apply to the American colonies, and common-law marriage survived in colonial America and is still recognized in some states today.
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Common law jurisdictions
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. Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries. Common law is deeply rooted in stare decisis, which means "to stand by things decided". This means that judges are required to follow previous rulings when dealing with similar cases later.
Legal systems that rely on common law as precedent are known as "common law jurisdictions". Common law jurisdictions are legal systems that give great weight to judicial precedent and the style of reasoning inherited from the English legal system. Today, 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. Many former colonies retain the common law system today, including the United States, Canada, Australia, India, and Hong Kong.
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, one must locate any relevant statutes and cases. Then, one must extract the principles, analogies, and statements by various courts to determine how the next court is likely to rule on the facts of the present case. Finally, one integrates all the lines drawn and reasons given and determines "what the law is". Then, one applies that law to the facts.
Common law systems are considerably more complicated in practice than in theory. The decisions of a court are binding only in a particular jurisdiction, and even within a given jurisdiction, some courts have more power than others. For example, decisions made by higher courts are typically binding on lower courts in the same jurisdiction. Common law promotes stability and consistency because everyone involved knows that the ultimate outcome will be based on previous caselaw and not on subjective, personal viewpoints. Given that judges need only follow precedent when making decisions in common law systems, court proceedings can be much shorter, thereby saving everyone time and money.
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Common law history
Common law, also known as case law or judge-made 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. It originated in England, where it was common to all the king's courts, and was spread to Wales, Ireland, and overseas colonies during the British colonial period in the 17th and 18th centuries. Many former colonies, including the United States, continue to practice common law today.
The common law system is distinct from 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 offenses. In contrast, common law is deeply rooted in stare decisis, a Latin phrase meaning "to stand by things decided", where courts follow precedents established by previous decisions. While common law courts are not absolutely bound by precedent, they typically align their reasoning with previous similar cases.
The flexibility of common law allows it to respond to changes in society. When a case arises with no clear legislative guidance, judges are empowered to resolve the issue and establish new precedent. This adaptability is advantageous when addressing situations not originally predicted by lawmakers. For example, in the context of infrastructure projects, a government may wish to enshrine specific protections for its citizens that may not be covered by existing laws.
The common law system also promotes stability and consistency, as outcomes are based on previous case law rather than subjective viewpoints. It provides efficiency by saving time and resources in court proceedings, as judges need only follow precedent when making decisions. However, past decisions may continue to shape future rulings until societal changes prompt a judicial body to overturn outdated or biased precedent.
The development of common law has been influenced by notable figures such as Sir William Blackstone, whose Commentaries on the Laws of England, published in the late 18th century, is considered a definitive historical treatise. Justice Oliver Wendell Holmes Jr., while serving on the Massachusetts Supreme Judicial Court, published The Common Law, which remains a classic in the field.
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Common law's flexibility
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries. It is deeply rooted in stare decisis, which means "to stand by things decided". This means that judges are required to follow a decision made in the past on a specific set of facts when ruling on the same or closely related issues in the future.
However, common law is not entirely rigid. It is more malleable than statutory law. Firstly, 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. This is especially true when extraordinarily good reasons are shown. This flexibility allows the law to change substantially over a decade or more without a sharp break, reducing disruptive changes to the legal system.
Secondly, common law is flexible in that it can respond to unforeseen cases, situations, and facts that were not predicted or anticipated by legislators. Lawmakers cannot predict every situation in which courts may need to apply the laws. Common law allows courts to address these situations and develop responses to real-life, unforeseen scenarios. This is an advantage of common law over civil law systems, which require lawmakers to pass changes in statutes and codes, which can be slow and may never happen.
Thirdly, common law is flexible in that it is independent of political influence. It is created by judges, who are appointed by the court system, rather than elected officials. This means that common law can adapt to changes in society without being influenced by political agendas.
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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.
Civil law is a comprehensive, codified set of legal statutes created by legislators. Common law, on the other hand, draws from institutionalized opinions and interpretations from judicial authorities and public juries.
Common law promotes stability and consistency as it is based on previous caselaw rather than subjective viewpoints. It also allows for adaptability and flexibility as it can address situations not originally predicted by lawmakers.
Common law is practiced in countries that were former British colonies or protectorates, including the United States, Australia, Canada, Hong Kong, India, New Zealand, and the United Kingdom.
A common-law marriage, also known as a non-ceremonial marriage, is a legal framework that allows couples to be considered married without formally registering their union. While it is rare in the U.S., some states allow common-law marriage if certain requirements are met.

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