
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 the English kings in the centuries following the Norman Conquest in 1066. Today, common law systems are used in many countries that were formerly British colonies or protectorates, including the United States, Canada, Australia, India, and New Zealand. These legal systems give significant weight to judicial precedent and the style of reasoning inherited from the English legal system. Common law is often contrasted with civil law, which is a comprehensive, codified set of legal statutes created by legislators.
| Characteristics | Values |
|---|---|
| Origin | Common law originated in the practices of the courts of the English kings in the centuries following the Norman Conquest in 1066. |
| Spread | England spread the English legal system to Wales, Ireland, its overseas colonies, and later the British Empire. Many former colonies, including the US, retain the common law system today. |
| Basis | Common law is based on precedent—judicial rulings made in previous similar cases. |
| Binding decisions | Judicial decisions are binding and can only be overturned by the same court or through legislation. |
| Adaptability | Common law is adaptable to unforeseen situations as it is not restricted by statutes and codes. |
| Flexibility | Common law is flexible as higher courts can overrule prior decisions as "bad law" without waiting for lawmakers to do so. |
| Efficiency | Common law saves time and money as judges need only follow precedent when making decisions. |
| Freedom of contract | Common law allows for extensive freedom of contract as few provisions are implied into the contract by law. |
| Marginalization | Common law has historically led to the unfair marginalization or disempowerment of certain groups due to the influence of past decisions on future rulings. |
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What You'll Learn
- Common law is a body of unwritten laws based on legal precedents
- Common law is deeply rooted in stare decisis
- Common law is flexible and adaptable to unforeseen situations
- Common law is derived from the practices of English kings after the Norman Conquest
- Common law systems are found in former British colonies

Common law is a body of unwritten laws based on legal precedents
Common law is a body of law unwritten laws based on legal precedents. It is a system of law that relies on judicial decisions made in previous similar cases, rather than on a comprehensive set of statutes or written rules. Common law, also known as case law, draws from institutionalized opinions and interpretations of judicial authorities and public juries.
The concept of common law originated in medieval England, in the practices of the courts of the English kings following the Norman Conquest in 1066. It established a unified legal system, gradually replacing the local folk courts and manorial courts that previously dominated the legal landscape in England. Over time, England spread its legal system to Wales, Ireland, and its overseas colonies, which further perpetuated the adoption of common law in various parts of the world.
Today, common law continues to be a prominent legal system, influencing jurisdictions in countries like the United States, the United Kingdom, Australia, Canada, Hong Kong, India, and New Zealand. The United States, in particular, operates under a dual system of both common and civil law. Common law is deeply rooted in the principle of stare decisis, which means "to stand by things decided." This principle emphasizes the importance of adhering to previous judicial decisions when handling similar cases in the future.
The value of a common-law system lies in its adaptability and flexibility. It allows judges to interpret and apply the law to situations that may not have been contemplated at the time of legislation. This adaptability also extends to commercial contracts, where parties can operate with greater economic efficiency and wealth creation as they can anticipate the legality of their arrangements based on established precedents.
However, the reliance on precedent in common law has also faced criticism. In jurisdictions with weak respect for precedent, there is less consistency and predictability in legal outcomes, making procedures more protracted. Additionally, the traditions of common law have historically led to the marginalization or disempowerment of certain groups, as past decisions continue to shape future rulings until societal changes prompt a judicial body to overturn the precedent.
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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 deeply rooted in the doctrine of stare decisis, which means "to stand by things decided" in Latin. Stare decisis is the idea that courts will adhere to precedent in their decision-making, promoting stability and consistency in the legal system.
The common law system, which originated in England following the Norman Conquest in 1066, gradually supplanted local folk courts and manorial courts, establishing a unified legal system across the king's courts. This system was later spread to Wales, Ireland, and various colonies of the British Empire, including the United States. Today, common law is practiced in several countries, including the United Kingdom, the United States, Canada, Australia, India, and New Zealand.
Under stare decisis, when a court faces a legal argument, it will rule in alignment with previous decisions on the same or closely related issues. This doctrine is based on the idea that the appropriate rule of law must be decided, fostering predictable and consistent development. It prevents arbitrary decision-making and bias by requiring judges to follow existing precedents. Stare decisis also lessens the need for subsequent litigation, saving time and judicial resources.
However, stare decisis is not an absolute rule, and there are exceptions to its application. For example, lower courts can modify or deviate from precedents if they are outdated or if the current case significantly differs from the precedent. Additionally, in rare cases, lower courts may overturn precedents, and higher courts can overrule precedents set by themselves or lower courts if they are deemed "unworkable or badly reasoned."
While common law is deeply rooted in stare decisis, it is important to note that common law may also incorporate certain statutes. In some cases, statutes can codify existing common law, create new causes of action, or legislatively overrule common law. Nevertheless, common law's reliance on stare decisis has contributed to the robust commercial systems in countries like the United Kingdom and the United States.
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Common law is flexible and adaptable to unforeseen situations
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". Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries.
The flexibility of common law allows it to respond to changes in society and evolve gradually over time, reducing disruption. Higher courts can overrule prior decisions as "bad law" without waiting for lawmakers to act. This adaptability is particularly important as technology evolves and plays a growing role in our lives.
Common law promotes stability and consistency in the legal system. It achieves this by relying on previous caselaw rather than subjective viewpoints. However, it is important to note that common law has historically led to the unfair marginalization or disempowerment of certain groups due to the influence of past decisions on future rulings.
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Common law is derived from the practices of English kings after the Norman Conquest
The common law system is a body of law primarily developed through judicial decisions rather than statutes. It is deeply rooted in stare decisis, which means "to stand by things decided". This means that judges are bound by precedent – they must follow the decision of an earlier judge if the two cases have similar facts.
Common law is derived from the practices of the English kings in the centuries following the Norman Conquest in 1066. The conquest did not immediately end Anglo-Saxon law, but a period of colonial rule by the mainly Norman conquerors produced change. Land was allocated to feudal vassals of the king, and serious wrongs were regarded as public crimes rather than personal matters, with punishment including death and forfeiture of property. The king's object was to preserve public order, but providing law and order was also profitable – cases on forest use, as well as fines and forfeitures, generated "great treasure" for the government.
The Norman Conquest led to the establishment of a unified legal system, gradually supplanting the local folk courts and manorial courts. The king's judges would travel around the country, resolving disputes on an ad hoc basis according to their interpretation of the customs. These decisions would be recorded and filed, and over time, the pre-Norman system of local customs and varying laws was replaced by a system that was common throughout the country.
The English common law originated in the early Middle Ages in the King's Court (Curia Regis), a single royal court set up at Westminster, near London. It did not originally consist of substantive rights but rather of procedural remedies. Over time, these remedies have produced the modern system in which rights are seen as primary over procedure.
The United States common-law system evolved from a British tradition that spread to North America during the 17th and 18th centuries. Many former colonies retain the common law system today, including Australia, Canada, Hong Kong, India, New Zealand, and the United Kingdom.
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Common law systems are found in former British colonies
Common law, also known as case law or judge-made law, is a body of law primarily developed through judicial decisions and precedents rather than statutes. It originated in the practices of the courts of the English kings following the Norman Conquest in 1066. It established a unified legal system, gradually replacing the local folk and manorial courts across England and later spreading to Wales, Ireland, and overseas colonies. Many former colonies, including the United States, Canada, Australia, India, and New Zealand, retain the common law system today.
The British colonial expansion brought English common and statutory law to newly acquired territories in America, Asia, Africa, and the Pacific. This legal system, with its emphasis on judicial precedent and reasoning, formed the basis of jurisdiction in these colonies. However, British administrators recognised the need to adapt the law to local circumstances, leading to legal pluralism in some colonies. For example, in colonial India, British law was applied in conjunction with indigenous customary law, and this model influenced other colonies.
In North America, the importation of African slaves led to the implementation of laws regulating master-slave relations. In Australia, colonisers adopted the practice of terra nullius, disregarding native land claims and securing European land titles. The legal system in these settlement colonies confirmed British law as the single legal system. The spread of English common law continued even after independence in some cases, such as in Ghana, where the common law system inherited from the British is enshrined in the country's 1992 Constitution.
Today, approximately one-third of the world's population lives in common law jurisdictions or mixed legal systems that integrate common law and civil law. Common law provides flexibility and stability due to its reliance on judicial interpretation and precedent. However, it has also been criticised for its potential to marginalise or disempower certain groups, as past decisions can shape future rulings until societal changes prompt a judicial body to overturn outdated precedents.
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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 also known as case law or judge-made law.
Common law originated in the practices of the courts of the English kings in the centuries following the Norman Conquest in 1066. It was common to all the king's courts across England and gradually supplanted local folk courts and manorial courts.
In a common law system, judges rely on previous similar cases and statutes to determine which precedents apply to a particular case. This is known as stare decisis, which means "to stand by things decided".
Common law is flexible and adaptable to changes in society. It can address situations not originally predicted by lawmakers and does not require lawmakers to pass changes in statutes and codes. Court proceedings can also be shorter, saving time and money.
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. Approximately one-third of the world's population lives in common law jurisdictions or mixed legal systems that integrate common law and civil law.





















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