
Common 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 is flexible and adaptable, allowing higher courts to overrule previous decisions without legislative intervention. It is one of the two main legal systems used today, alongside civil law, which relies on codes and statutes. Common law originated in England and has spread to various parts of the world, including North America, Australia, Canada, and India. It is characterised by its reliance on judicial decisions, case-by-case traditions, and the style of reasoning it employs.
| Characteristics | Values |
|---|---|
| Definition | A "body of law" based on court decisions rather than codes or statutes. |
| Other names | Judicial precedent, judge-made law, case law. |
| Origin | The common law system originated in England in the Middle Ages and was spread to Wales, Ireland, and overseas colonies by the British Empire. |
| Current use | Common law systems are used in Australia, Canada, Hong Kong, India, New Zealand, the United Kingdom, and the United States. Approximately one-third of the world's population lives in common law jurisdictions or mixed legal systems that integrate common law and civil law. |
| Basis of decisions | Common law is based on stare decisis, a Latin phrase meaning "to stand by things decided." It relies on caselaw and legal precedent to guide decisions, giving weight to previous similar cases and the style of reasoning inherited from the English legal system. |
| Adaptability | Common law is adaptable to unforeseen situations not originally predicted by lawmakers. It can respond to changes in society and new trends in political, legal, and social philosophy. |
| Flexibility | Common law is flexible as it does not require lawmakers to pass changes in statutes and codes. Higher courts can overrule prior decisions as "bad law" without waiting for legislative intervention. |
| Stability and consistency | Common law promotes stability and consistency as outcomes are based on previous caselaw rather than subjective viewpoints. |
| Efficiency | Common law saves time and money as judges only need to follow precedent when making decisions, making court proceedings shorter. |
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What You'll Learn

Common law origins
Common law, also known as case law or judge-made law, is a body of law unwritten laws based on legal precedents established by the courts. It is deeply rooted in the principle of stare decisis, a Latin phrase that means "to stand by things decided". This means that common law is based on the idea that courts and judges should follow earlier decisions and rulings, or case law, when dealing with similar cases in the future.
The origins of common law can be traced back to the English legal system during the Middle Ages, where it was administered by the courts of the English kings. It was then spread to Wales, Ireland, and eventually the British colonies, including what is now the United States, Canada, Australia, New Zealand, and India, during the 17th and 18th centuries. As a result, many former colonies continue to use the common law system today, and approximately one-third of the world's population lives in common law jurisdictions or mixed legal systems that integrate common law and civil law.
In a common law jurisdiction, the determination of "what the law is" in a given situation involves several stages of research and analysis. This includes ascertaining the facts, locating relevant statutes and cases, extracting principles and analogies from court decisions, and integrating this information to determine the applicable law. The decisions of higher courts and more recent rulings generally carry more weight in establishing precedent.
One key advantage of common law is its adaptability and flexibility. Unlike civil law systems, which rely primarily on comprehensive codes and statutes, common law systems can address situations not originally predicted by lawmakers and adapt to changes in society without the need for legislative intervention. This allows common law to evolve through a series of gradual steps, reducing disruption and ensuring stability and consistency in the legal system.
In summary, the origins of common law lie in the English legal system of the Middle Ages, and it has since spread and evolved to become the basis of the legal systems in many countries around the world. Its key characteristics include a reliance on judicial precedent, stare decisis, and the flexibility to adapt to new situations and societal changes.
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Common law marriages
Common law, also known as judicial precedent, is a body of law based on court decisions rather than codes or statutes. It is one of the two main legal systems used today, the other being civil law. Common law systems rely on caselaw and legal precedent to guide their decisions, while civil law systems rely primarily on codes and statutes.
Now, a common-law marriage, also known as a non-ceremonial marriage, informal marriage, or marriage by habit and repute, is a marriage that takes legal effect without the prerequisites of a marriage license or participation in a marriage ceremony. In other words, it is a marriage that results from the parties' agreement to consider themselves married, followed by cohabitation, rather than through a statutorily defined process.
The original concept of a "common-law" marriage is one considered valid by both partners but not formally recorded with a state or religious registry, nor celebrated in a formal civil or religious service. The term "common-law marriage" is often used incorrectly to describe various types of couple relationships, such as cohabitation (whether or not registered) or other legally formalized relations. Although these interpersonal relationships are often called "common-law marriages", they differ from its original meaning in that they are not legally recognized as "marriages".
Common-law marriages are not recognized in all jurisdictions, but those that do recognize them typically respect the validity of such marriages lawfully entered into in other states or countries. In the United States, common-law marriage is recognized in seven states and the District of Columbia, and nine other states recognize it with some restrictions. 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".
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Common law vs civil law
Common law and civil law are the two main legal systems used today throughout the world. Common law systems give great weight to judicial precedent and the style of reasoning inherited from the English legal system. Civil law systems, on the other hand, rely primarily on codes and statutes.
Common law, also known as judicial precedent, judge-made law, or case law, is a body of law primarily developed through judicial decisions rather than statutes. It is deeply rooted in stare decisis, a Latin phrase that means "to stand by things decided". In practice, this means that courts and judges need to follow earlier decisions and rulings when dealing with similar cases later. Common law promotes stability and consistency because everyone involved knows that the outcome will be based on previous caselaw rather than subjective viewpoints. It is also more flexible than civil law, as it can respond to changes in society and higher courts can overrule prior decisions without waiting for lawmakers to act.
Civil law, on the other hand, is a legal system rooted in the Roman Empire and was comprehensively codified and disseminated starting in the 19th century, with France's Napoleonic Code and Germany's Bürgerliches Gesetzbuch. Civil law systems are generally more prescriptive than common law systems and rely on legal codes that function as the primary source of law. Civil law court decisions are not binding in other cases, even if the facts are similar. Civil law judges tend to give less weight to judicial precedent and may be forbidden from pronouncing general principles of law, as in the case of the Napoleonic Code.
Countries that follow a common law system are typically former British colonies or protectorates, including the United States. In contrast, civil law is the world's most common legal system, practiced in about 150 countries. While common law may be more complicated and time-consuming due to its reliance on precedent, it allows for adaptability and flexibility in unforeseen situations, as courts can address situations not originally predicted by lawmakers. Civil law, with its clear codes and statutes, offers a more straightforward approach that may be easier to understand and apply.
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Common law in the modern world
Common law, also known as case law or judge-made law, is a body of law unwritten laws based on legal precedents established by the courts. It is one of the two main legal systems used today, the other being civil law. Common law is deeply rooted in stare decisis, a Latin term that means "to stand by things decided". This means that judges in common law jurisdictions are required to follow previous rulings, also known as caselaw, when dealing with similar cases.
The common law system was first established in England during the Middle Ages and spread to Wales, Ireland, and various colonies of the British Empire, including the United States, Canada, Australia, New Zealand, and India, many of which continue to use it 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.
One advantage of common law is its adaptability to unforeseen situations. While legislators cannot predict all the scenarios in which laws will need to be applied, common law allows courts to address situations not originally contemplated by lawmakers. For example, in a ""case of first impression" with no precedent or clear legislative guidance, judges are empowered to establish new precedent. Common law is also flexible, as higher courts can overrule prior decisions as "bad law" without waiting for lawmakers to act. This allows common law to respond to changes in society and evolve gradually over time, reducing disruption.
Another benefit of common law is its efficiency. Since judges in common law systems only need to follow precedent when making decisions, court proceedings can be shorter, saving time and money. Additionally, common law promotes stability and consistency because everyone involved knows that the outcome will be based on previous caselaw rather than subjective viewpoints.
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Common law and the precedent
Common law is a body of law unwritten laws based on legal precedents established by the courts. It is deeply rooted in the Latin phrase stare decisis, which means "to stand by things decided". In other words, common law is based on the principle that courts and judges should follow past decisions and rulings, or case law, when dealing with similar cases in the future.
Common law is often contrasted with civil law, which is a comprehensive, codified set of legal statutes created by legislators. Civil law systems, which originated in mainland Europe, centre around a clear code of statutes that outline procedures for handling claims and punishments for offences. Civil law court decisions are not binding in other cases, even if the facts are similar. On the other hand, common law systems are more flexible since they can respond to changes in society and do not require lawmakers to pass changes in statutes.
In a common law jurisdiction, determining "what the law is" in a given situation involves several stages of research and analysis. This includes ascertaining the facts, locating relevant statutes and cases, extracting principles, analogies, and statements by various courts, and then applying that law to the facts. The decisions of higher courts or legislatures carry more weight than those of lower courts.
Common law promotes stability and consistency because everyone involved knows that the outcome will be based on previous case law rather than subjective viewpoints. It also allows for efficiency in court proceedings since judges only need to follow precedent when making decisions.
It is important to note that common law courts are not absolutely bound by precedent. In certain circumstances, they can reinterpret and revise the law to adapt to new trends in political, legal, and social philosophy.
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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".
Civil law systems rely primarily on codes and statutes, whereas common law systems rely on caselaw and legal precedent to guide their decisions. Civil law is a comprehensive, codified set of legal statutes created by legislators, whereas common law is more flexible and can respond to changes in society.
Common law promotes stability and consistency as everyone involved knows that the ultimate outcome will be based on previous caselaw rather than subjective, personal viewpoints. It is also efficient as court proceedings can be shorter, saving time and money.
Common law is practiced in Australia, Canada, Hong Kong, India, New Zealand, the United Kingdom, and the United States. Many former colonies also retain the common law system today.






















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