
Common law is a legal system that originated in England after the Norman Conquest in 1066. It is a body of unwritten laws based on legal precedents established by the courts and is deeply rooted in stare decisis, which means to stand by things decided. Common law systems are used in several countries today, particularly those that were former British colonies or protectorates, including the United States, Australia, Canada, India, and New Zealand. It is often contrasted with civil law, which is a codified system of law used in countries that were formerly colonies or protectorates of France, Germany, Spain, or Portugal.
| Characteristics | Values |
|---|---|
| Definition | Common law is a body of unwritten laws based on legal precedents established by the courts. |
| Basis | Common law is deeply rooted in stare decisis ("to stand by things decided"), where courts follow precedents established by previous decisions. |
| History | Common law originated in the practices of the courts of English kings following the Norman Conquest in 1066. |
| Geographic Reach | Common law is practiced in Australia, Canada, Hong Kong, India, New Zealand, the United Kingdom, and former British colonies like the United States. |
| Court Hierarchy | Decisions of higher courts carry more weight than those of lower courts. |
| Judicial Decisions | Judicial decisions are binding and can only be overturned by the same court or through legislation. |
| Contractual Provisions | Common law systems have extensive freedom of contract with few implied provisions, resulting in longer contracts. |
| Legislation | Statutes supersede common law and may codify, create new causes of action, or overrule it. |
| Commercial Systems | Common law systems contribute to robust commercial systems, as seen in the UK and US. |
| Comparison to Civil Law | Common law systems are less prescriptive than civil law systems, which are more detailed and codified. |
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What You'll Learn
- Common law is deeply rooted in stare decisis, meaning to stand by things decided
- Common law is a body of unwritten laws based on legal precedents
- Common law is practised in several countries, including the US, Canada, and the UK
- Common law systems are less prescriptive than civil law systems
- Common law originated in the practices of English courts following the Norman Conquest in 1066

Common law is deeply rooted in stare decisis, meaning to stand by things decided
Common law is a legal system that is based on customary law and is deeply rooted in stare decisis, which means "to stand by things decided". It originated in England following the Norman Conquest in 1066, when the centralised government maintained written records and established a unified legal system. This system gradually replaced the local folk courts and manorial courts that had previously existed.
Stare decisis, or the principle of following precedent, is a key feature of common law. Courts follow the precedents established by previous decisions, adhering to previous rulings when dealing with similar cases. This means that judges will typically align their reasoning with the precedent set in a previous decision when resolving a similar case. However, in a ""case of first impression" with no precedent, judges have the power to establish a new precedent.
Common law is sometimes referred to as case law because it is based on legal precedents established by the courts. It is a body of unwritten laws that draws from institutionalised opinions and interpretations of judicial authorities and public juries. Common law relies on detailed records of similar situations and statutes because there is no official legal code. The decisions of higher courts are generally binding on lower courts within the same jurisdiction.
Common law has been adopted in several countries, particularly those that were former British colonies or protectorates, such as the United States, Canada, Australia, India, and New Zealand. It has also influenced the legal systems of other countries, such as Ireland and the member states of the Commonwealth. Today, the US operates under a dual system of both common and civil law.
While common law provides a flexible framework that allows for the creation of new legislation, civil law offers a more prescriptive approach with detailed statutes. Civil law is typically followed in countries that were formerly French, Dutch, German, Spanish, or Portuguese colonies or protectorates.
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Common law is a body of unwritten laws based on legal precedents
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 institutionalised opinions and interpretations from judicial authorities and public juries. Common law sometimes proves the inspiration for new legislation to be enacted.
Common law is deeply rooted in stare decisis ("to stand by things decided"), where courts follow precedents established by previous decisions. When a similar case has been resolved, courts typically align their reasoning with the precedent set in that decision. However, in a "case of first impression" with no precedent or clear legislative guidance, judges are empowered to resolve the issue and establish new precedent.
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 of what they consider important to determine how the next court is likely to rule on the facts of the present case. More recent decisions and decisions of higher courts or legislatures carry more weight than earlier cases and those of lower courts. Finally, one integrates all the lines drawn and reasons given and determines "what the law is". Then, one applies that law to the facts.
In practice, common law systems are considerably more complicated than the simplified system described above. 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. Common law is less prescriptive than civil law, and it is important to set out all the terms governing the relationship between the parties to a contract in the contract itself. Common law is used in several countries today, including the United States, Canada, the United Kingdom, Australia, Hong Kong, India, and New Zealand.
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Common law is practised in several countries, including the US, Canada, and the UK
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 the principle of stare decisis, which means "to stand by things decided". This means that courts follow precedents established by previous decisions, creating consistency in the law. Common law originated in England after the Norman Conquest in 1066, when a unified legal system was established to supplant the local folk and manorial courts. It was then spread to North America during the colonial period in the 17th and 18th centuries.
Common law is practised in several countries today, including the US, Canada, and the UK. In the US, common law plays a pivotal role in shaping the country's legal framework and influencing legal practices. All US states except Louisiana have implemented reception statutes or adopted common law by judicial opinion. English criminal law also derives its main principles from common law, with crimes like murder remaining common-law crimes rather than statutory offences.
Canada's legal system is based on a combination of common law and civil law. Nine provinces and the federal territories, excluding Quebec, follow the common law legal tradition. Common law prevails in criminal law throughout Canada. In the UK, the Supreme Court of the United Kingdom has the authority to overrule and unify criminal law decisions of lower courts in England, Wales, and Northern Ireland. The UK operates under a dual system of both common and civil law, with common law influencing areas such as public decency offences.
While the term "common-law marriage" is often used in the US, Canada, and the UK to describe unmarried couples living together in a marriage-like relationship, it is often misused and can create confusion about legal rights. In Canada, common-law marriages are not recognised, but informal cohabitation relationships are recognised for certain purposes, creating legal rights and obligations for couples depending on provincial law.
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Common law systems are less prescriptive than civil law systems
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It originated in the practices of the courts of English kings following the Norman Conquest in 1066, gradually supplanting the local folk courts and manorial courts. Common law is deeply rooted in stare decisis, which means "to stand by things decided", where courts follow precedents established by previous decisions. When a similar case has been resolved, courts typically align their reasoning with the precedent set in that decision.
Common law systems rely on judicial precedent and allow for more flexibility in interpretation. The decisions of higher courts are generally binding on lower courts, promoting stability and consistency in the legal system. However, lower courts can deviate from precedents if they are outdated or if the current case is substantially different. Common law systems may also take longer to reach a decision due to the need to research and analyse previous cases and determine which precedents apply.
In contrast, civil law is a comprehensive, codified set of legal statutes created by legislators. Civil law systems clearly define the cases that can be brought to court, the procedures for handling claims, and the punishments for offences. Civil law codes, such as a civil code, corporate law, administrative law, tax law, and constitutional law, enshrine basic rights and duties. While civil law statutes can be more detailed, they may also be more challenging to read. Civil law systems aim to create order and reduce bias in the application of laws.
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Common law originated in the practices of English courts following the Norman Conquest in 1066
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 the concept of stare decisis, which means "to stand by things decided". In other words, courts follow precedents established by previous decisions, and when similar cases arise, courts align their reasoning with the precedent set in that previous decision.
The common law system in England began to develop after the Norman Conquest in 1066. William the Conqueror, the Duke of Normandy, successfully invaded England and became king. This event marked a turning point in the legal history of England, leading to significant changes in the political, economic, social, and legal landscape. The Normans introduced a centralized administration system, establishing several centralized institutions, including the Curia Regis, or the King's Court. This court played a crucial role in the development of common law, as it had wide-reaching judicial powers and greater contact with other royal courts.
Prior to the Norman Conquest, England's legal business took place in various local folk courts, urban borough courts, merchant fair courts, and manorial or seigniorial courts held by large landholders. The Anglo-Saxon law that governed England before the conquest was influenced by local customs and the church, with crimes often based on blood feuds and compensation to the victim.
The royal courts established by the Normans slowly harmonized the divergent laws and practices that had characterized the Anglo-Saxon courts. While this did not create one uniform law for all of England, it did result in the development of common principles of interpretation that were applied across the nation. This led to the establishment of a unified legal system that gradually supplanted the local folk and manorial courts.
The consistent development of common law in England over the centuries influenced the legal systems of its colonies, including the United States, Canada, Australia, New Zealand, and India. The principles and rules of English common law were extensive, complex, and varied by region and locality. Today, common law continues to be a significant contributor to the robust commercial systems in the United Kingdom and the United States.
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