
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It draws from institutionalized opinions and interpretations from judicial authorities and public juries. Common law is distinct from civil law, which is a comprehensive, codified set of legal statutes created by legislators. While civil law clearly defines the cases that can be brought to court, common law is based on judges' decisions and customs. It is practised in several countries, including the US, UK, Canada, and Australia. Here are some examples of how the term common law can be used in a sentence.
| Characteristics | Values |
|---|---|
| Common law is a body of unwritten laws | Common law is based on legal precedents established by the courts, and draws from institutionalized opinions and interpretations from judicial authorities and public juries |
| Common law is adaptable | Common law is adaptable to situations that were not contemplated at the time by the legislature |
| Common law is flexible | Common law leaves the legal code open for interpretation |
| Common law is based on custom | Common law is based on custom, usage, and the decisions and opinions of law courts |
| Common law is based on judges' decisions | Common law is based on what the judge thinks, and that can change on any given day, with any different judge |
| Common law is based on precedent | A precedent, known as stare decisis, is a history of judicial decisions that form the basis of evaluation for future cases |
| Common law is based on statutes | Common law relies on detailed records of similar situations and statutes because there is no official legal code that can apply to a case at hand |
| Common law is based on common sense | Common law needs common sense |
| Common law is based on tradition | Common law evolved from a British tradition that spread to North America during the 17th and 18th centuries |
| Common law is based on regional variations | Common law practices vary across regions, for example, common law marriages are recognized in some states but not in others |
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What You'll Learn
- Common law is based on judges' decisions, customs and legal precedents, not written laws
- Common law marriage is regarded as a marriage, despite no official contract being signed
- Common law can be adapted to situations not contemplated by the legislature
- Common law is influenced by institutionalised opinions and interpretations from judicial authorities and public juries
- Common law is distinct from civil law, which is a codified set of legal statutes created by legislators

Common law is based on judges' decisions, customs and legal precedents, not written laws
Common law is a system of law that is based on judges' decisions, customs, and legal precedents, rather than a body of written laws created by a legislature. It is a flexible system that can adapt to new situations that were not contemplated at the time laws were written, as it is based on interpretation and precedent. This is in contrast to civil law, which is a comprehensive, codified set of legal statutes that clearly define the cases that can be brought to court and the procedures for handling claims. Civil law aims to create order and reduce bias in the legal system by standardizing the codes applied to each case.
Common law, also known as case law, originated in medieval England and is now practiced in various forms in countries including the US, the UK, Australia, Canada, Hong Kong, India, and New Zealand. It draws from institutionalized opinions and interpretations of judicial authorities and public juries. The judge presiding over a case determines which precedents apply to that particular case.
Common law is often used in the context of marriage and relationships. For example, a common-law relationship is regarded as a marriage because it has lasted a long time, even though no official marriage contract has been signed. Common law marriage is recognized in some states in America, such as Texas, but not in others. It is important to note that if a couple resides in a state where common-law marriage is not legal, they cannot get a common-law divorce.
Common law also covers a wide range of other areas, including property rights, protest rights, and criminal law. For example, under common law, the owner of a property possesses all mining rights unless these have been reserved by a previous owner. Additionally, common law has long held that citizens have the right to assemble and protest peacefully. In terms of criminal law, common law robbery is a charge that has been applied in various cases.
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Common law marriage is regarded as a marriage, despite no official contract being signed
Common-law marriage, also known as 'marriage by cohabitation with habit and repute', is a marriage that is regarded as legally valid without the prerequisites of an official marriage contract, a marriage license, or a marriage ceremony. This type of marriage is based on custom, usage, and the decisions and opinions of law courts. It is recognised in seven US states and the District of Columbia, and nine other states recognise it with some restrictions.
Common-law marriage is a body of unwritten laws based on legal precedents established by the courts. It draws from institutionalised opinions and interpretations from judicial authorities and public juries. The judge presiding over a common-law marriage case determines which precedents apply to that particular case. While there is no statutory requirement for the length of time a couple needs to live together, generally, the longer a couple lives together, the stronger their case is for common-law marriage.
To be considered a common-law marriage, both partners must have the legal right or "capacity" to marry. This usually means they must be at least 18 years old, of sound mind, and not already married to other people. Both partners must also intend to be married and behave as a married couple by holding themselves out to friends, family, and the public as being married.
In some countries, common-law marriages are not legally recognised as marriages but may be considered a parallel interpersonal status such as a "domestic partnership", "registered partnership", "conjugal union", or "civil union". For example, in Canada, while some provinces may grant couples in marriage-like relationships many of the rights and responsibilities of a marriage, they are not legally considered married. In Ireland, common-law marriage is not recognised, but the Civil Partnership and Certain Rights and Obligations of Cohabitants Act 2010 gave some rights to unmarried cohabitants.
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Common law can be adapted to situations not contemplated by the legislature
Common law is a system of law that is based on judges' decisions, customs, and precedents, rather than a strict set of written laws. It originated in England following the Norman Conquest in 1066 and spread to British colonies during the 17th and 18th centuries. Today, common law is practiced in various countries, including the US, UK, Canada, Australia, and India, often alongside a civil law system.
One of the key advantages of common law is its adaptability. As a system based on precedents and interpretations, common law can be adapted to address new and evolving situations that were not contemplated by the legislature at the time of its creation. This adaptability is particularly valuable in the face of rapid technological advancements, as it allows for the interpretation and evolution of laws to keep up with changing societal needs and norms.
For example, common law can address situations involving new technologies that did not exist when the original laws were written. In such cases, judges can rely on the principles and precedents established in previous cases to interpret and apply the law to the new situation. This flexibility ensures that the law remains relevant and effective in an ever-changing societal landscape.
Furthermore, common law provides a level of consistency and stability to the legal system. By relying on precedents and the decisions of higher courts, lower courts can apply established principles to new situations, promoting uniformity in legal outcomes. This consistency is particularly important in complex or unusual cases where there is no clear statutory guidance.
However, it is important to recognize that common law also has its limitations. In certain situations, civil law may offer clearer and more detailed guidance, especially when the legislature has addressed the specific set of facts applicable to a case. Additionally, the interpretation of common law can vary depending on the individual judge, leading to potential inconsistencies in legal outcomes.
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Common law is influenced by institutionalised opinions and interpretations from judicial authorities and public juries
Common law is a body of unwritten laws based on legal precedents established by the courts. It is derived from its original appearance in medieval England and is still in effect in the US and other countries today. Common law is influenced by institutionalised opinions and interpretations from judicial authorities and public juries. This influence is seen in the reliance on judicial opinions to create precedents, which then act as a basis for future evaluations of similar cases.
Judges play a significant role in common law, as they determine which precedents apply to a particular case. This can change with different judges, as each judge's opinion may vary. The courts' interpretations of the law are also influenced by public juries, contributing to the dynamic nature of common law.
A precedent, known as stare decisis, is a history of judicial decisions that form the basis for evaluating future cases. Common law draws from these past decisions, which can lead to the marginalization or disempowerment of certain groups if societal changes are not considered. For example, in England, common law previously held that fathers were entitled to custody of children during divorce proceedings, a bias that kept women trapped in marriages.
Common law is adaptable, allowing for interpretation and application to new situations not contemplated by the legislature. This is particularly important with the evolving nature of technology, as it allows for flexibility in the legal code. Common law influences decision-making in unusual cases where existing statutes or written rules do not provide a clear outcome.
Overall, common law is influenced by the opinions and interpretations of judicial authorities and public juries, shaping the precedents that guide future legal evaluations and decisions.
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Common law is distinct from civil law, which is a codified set of legal statutes created by legislators
Civil law, on the other hand, is a comprehensive, codified set of legal statutes created by legislators. It is rooted in the Roman Empire and was comprehensively codified and disseminated starting in the 19th century, with notable examples such as France's Napoleonic Code and Germany's Bürgerliches Gesetzbuch. Civil law systems rely on legal codes as their primary source of law, whereas common law systems heavily rely on judicial precedent. Civil law is the world's most common legal system, practiced in about 150 countries.
The primary contrast between the two systems is the role of written decisions and precedent as a source of law. Common law systems place significant weight on precedent, while civil law judges tend to give less weight to judicial precedent. For instance, the Napoleonic Code expressly forbade French judges from pronouncing general principles of law. Civil law is generally more prescriptive than common law, with more provisions implied into contracts.
Another difference is the approach to contract terms. In a common law system, it is crucial to set out all the terms governing the relationship between the parties in the contract itself, as there are typically few implied provisions. In contrast, civil law systems place less importance on including all terms in the contract, as inadequacies or ambiguities can be resolved by operation of law. This often results in shorter contracts in civil law countries compared to common law countries.
Common law and civil law systems also differ in their treatment of PPP arrangements. In many civil law countries, a separate administrative law governs PPP arrangements. It is important to seek local legal advice to understand the specific rules applicable in a particular civil law system. In a civil law jurisdiction, unless the contract specifies arbitration, it will be enforced by the administrative courts.
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Frequently asked questions
Common law is a system of law that is based on judges' decisions, customs, and precedents set by similar previous cases, rather than a set of written rules or statutes.
Civil law is a comprehensive, codified set of legal statutes created by legislators. A civil system clearly defines the cases that can be brought to court, the procedures for handling claims, and the punishment for an offense. Common law, on the other hand, is more flexible and adaptable to situations not contemplated by the legislature.
Common law originated in medieval England and was spread to its colonies during the 17th and 18th centuries. Today, common law is practiced in countries like the US, UK, Canada, Australia, Hong Kong, India, and New Zealand.
In a common law system, the judge presiding over a case determines which precedents from past similar cases apply to the current case. Common law also requires that these precedents and decisions are unambiguous.
"Texas is one of eight states that allow common-law marriages."
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