
Common law is a body of 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 practised in countries including the US, the UK, Australia, Canada, India, Ghana and New Zealand. It is deeply rooted in stare decisis, which means to stand by things decided. In other words, common law is based on the principle that courts and judges must follow earlier decisions and rulings when dealing with similar cases later. This provides stability and consistency to the legal system, as everyone involved knows that the ultimate outcome will be based on previous caselaw rather than subjective viewpoints. Common law is also flexible, as it can respond to changes in society without lawmakers needing to pass changes in statutes and codes.
| Characteristics | Values |
|---|---|
| Definition | Common law is a body of customary law based on court decisions rather than codes or statutes. |
| Origin | Common law originated in England during the Middle Ages. |
| Evolution | Common law evolves through a series of gradual steps, allowing the law to change substantially over time without sharp breaks. |
| Flexibility | Common law is flexible as it can respond to changes in society without requiring lawmakers to pass changes in statutes and codes. |
| Influence | Common law influences the decision-making process in unusual cases where existing statutes or written rules of law do not provide a clear outcome. |
| Precedent | Common law places emphasis on precedent, with courts and judges following previous decisions and rulings when dealing with similar cases. |
| Interpretation | Common law allows for interpretation, adapting to situations not contemplated at the time by the legislature. |
| Marriage | Common law marriage grants similar rights to married couples who are not officially married if certain conditions are met. |
| Codification | Common law rules may be codified by legislatures, modified, or replaced by legislation. |
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What You'll Learn

Common law marriage
Common-law marriage, also known as non-ceremonial marriage, is a legal framework that may allow couples to be considered married without having formally registered their union as either a civil or religious marriage. Common-law marriage is recognised in seven US states and the District of Columbia, and nine other states recognise it with some restrictions.
The requirements for common-law marriage vary by state, but generally, couples must live together for a period of time (cohabitation), hold themselves out to friends, family, and the community as "married", and have the legal right or "capacity" to marry. This means they must be at least 18 years old, of sound mind, and not already married to other people.
In some provinces in Canada, couples in marriage-like relationships may be granted many of the rights and responsibilities of a marriage, but they are not legally considered married. They may be defined as "unmarried spouses" and treated as married spouses for certain purposes such as taxes and financial claims.
The concept of common-law marriage originated in medieval Europe, where marriage was under the jurisdiction of canon law. Canon law recognised as valid a marriage in which the parties stated that they took each other as husband and wife, even in the absence of any witnesses. In ancient Greece and Rome, marriages were private agreements between individuals and estates.
Over time, the Catholic Church and various European governments introduced requirements for marriage, such as the presence of a priest or official registration. These changes ended the practice of common-law marriage in many places, but it survived in the American colonies and is still recognised in some US states today.
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Common law and civil law
Common law is a body of unwritten laws based on legal precedents established by the courts. It is usually contrasted with the civil law system, which is used in Continental Europe, Mexico, most of Central and South America, and some African countries including Egypt and the Francophone countries of the Maghreb and West Africa. Common law systems trace their history to English common law, while civil law systems trace their history through the Napoleonic Code back to the Corpus Juris Civilis of Roman law.
US common law originates from medieval England, however, today both the US and the UK operate under a dual system of both common and civil law. Common law still has practical applications in some areas of law, including contract law and the law of torts. Common law is also more flexible than civil law, as it can respond to changes in society. Unlike civil law systems, common law doesn't require lawmakers to pass changes in statutes and codes. In common law, higher courts can overrule prior decisions as "bad law" without waiting for lawmakers to act.
Common law places an emphasis on precedent while allowing some freedom for interpretation. The value of a common-law system is that the law can be adapted to situations that were not contemplated at the time by the legislature. Common law courts are not absolutely bound by precedent but can reinterpret and revise the law without legislative intervention to adapt to new trends in political, legal, and social philosophy.
Civil law is a legal system rooted in the Roman Empire and was comprehensively codified and disseminated starting in the 19th century, most notably with France's Napoleonic Code (1804) and Germany's Bürgerliches Gesetzbuch (1900). Unlike common law systems, which rely heavily on judicial precedent, civil law systems are characterised by their reliance on legal codes that function as the primary source of law. Civil law is the world's most common legal system, practised in about 150 countries.
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Common law in court
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 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. For example, if a court makes a particular decision based on a specific set of facts, that court is required to follow that decision if they ever rule on the same or a closely related issue.
Common law is usually contrasted with the civil law system, which is used in Continental Europe, Mexico, most of Central and South America, and some African countries including Egypt and the Francophone countries of the Maghreb and West Africa. Civil law systems rely primarily on codes and statutes, with a comprehensive code of statutes that clearly outlines everything from the procedures for handling claims to the punishment for offences.
Common law systems place great weight on precedent, whereas civil law judges tend to give less weight to judicial precedent. Common law is more malleable than statutory law, as it can respond to changes in society. Common law courts are not absolutely bound by precedent, but can (when extraordinarily good reason is shown) reinterpret and revise the law, without legislative intervention, to adapt to new trends in political, legal and social philosophy.
Common law originated in the practices of the courts of the English kings in the centuries following the Norman Conquest in 1066. It established a unified legal system, gradually supplanting the local folk courts and manorial courts. England spread the English legal system across the British Isles, first to Wales, then to Ireland and overseas colonies, which was continued by the later British Empire.
Today, several countries around the world, including the US, Canada, India, and Australia, continue to rely heavily on common law when resolving legal disputes.
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Common law and precedent
Common 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". In other words, common law places a strong emphasis on precedent, requiring courts and judges to follow previous decisions and rulings when dealing with similar cases later. This means that the first step in resolving a legal dispute in a common law jurisdiction is often to look at earlier court rulings and decisions.
Common law is flexible and adaptable, allowing for interpretation and revision to align with societal changes. While common law courts are influenced by precedent, they are not absolutely bound by it. In certain circumstances, such as when there is an extraordinarily good reason, judges can reinterpret and revise the law without legislative intervention. This allows the law to evolve and adapt to new trends and changes in society, ensuring that outdated or biased decisions can be overturned.
Common law originated in England during the Middle Ages and was spread throughout the British Isles and to various colonies by the British Empire. Today, many former colonies, including the United States, Canada, India, Australia, and New Zealand, continue to rely heavily on common law when resolving legal disputes. Common law jurisdictions give significant weight to judicial precedent and the style of reasoning inherited from the English legal system.
The common law system contrasts with the civil law system, which is used in Continental Europe, Mexico, most of Central and South America, and some African countries. While common law places great importance on precedent and the decisions of higher courts, civil law judges tend to give less weight to judicial precedent. Civil law is a comprehensive, codified set of legal statutes created by legislators, aiming to create order and reduce bias in the legal system.
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Common law in the modern world
Common law is a body of unwritten laws based on legal precedents established by courts. It is derived from its original appearance in medieval England, but it is still very much in effect in the US and other countries today. Common law is usually contrasted with the civil law system, which is used in Continental Europe, Mexico, most of Central and South America, and some African countries. Common law systems place great weight on precedent, while civil law judges tend to give less weight to judicial precedent.
Common law has been described as flexible since it can respond to changes in society. It doesn't require lawmakers to pass changes in statutes and codes, which can be time-consuming or never happen. Common law influences the decision-making process in unusual cases where the outcome cannot be determined based on existing statutes or written rules of law. It also allows for the adaptation of the law to situations that were not contemplated at the time by the legislature.
In the modern world, common law still has practical applications in some areas of law, such as contract law and the law of torts. It also has a concept of trusts, which enables security interests to be held by a trustee for lenders in a syndicated loan situation without the need for formal transfer or re-registering of security interests in the names of new lenders. Common law marriage, also known as a non-ceremonial marriage, is another example of common law in action today. This legal framework allows couples to be considered married without formally registering their union.
Many countries in the world today, including those that were former British colonies or protectorates, continue to rely heavily on common law when resolving legal disputes. These include the US, Canada, India, and Australia. The modern-day Constitution of Ghana, for example, embraces English common law by entrenching it in its provisions.
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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 draws from institutionalized opinions and interpretations from judicial authorities and public juries. It relies on detailed records of previous similar cases (case law) and statutes to guide decisions as there is no official legal code.
Common law promotes stability and consistency in the legal system as everyone knows that the outcome of a case will be based on previous case law and not on subjective, personal viewpoints. It also allows the law to be more flexible and adapt to changes in society.


































