- Also called:
- Anglo-American law
- Related Topics:
- Equity
- Coverture
- Feme sole
- Stare decisis
- judicial lawmaking
Common law
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What is common law?
Common law is a body of law based on customs and general principles that has evolved from judicial decisions and case law. It is administered by common-law courts in England since the Middle Ages. The U.S. and Commonwealth member states also use this type of legal system.
English common law originated in the King's Court in the early Middle Ages. Judges and lawyers develop common law through what is now called a theory of adjudication. In this process, judges don't act as lawmakers but rather as discoverers of law. They discern common law from past cases, treatises, and common experience.
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How is common law different from laws written by lawmakers?
Common law is based on custom and general principles embodied in case law, serving as precedent for situations not covered by statutes. It is developed in courts through judicial decisions, which become controlling precedents for future cases. This system, called stare decisis, means judges are expected to follow earlier decisions to ensure uniform and predictable justice.
Laws written by lawmakers, or statutes, are rules enacted by a governing authority, especially a legislature. Courts apply and interpret these statutes, often transforming them from generalities to specifics. The goal of statutory interpretation is to discover and give effect to the intention of the legislature. Unlike common law, statutes are formally enacted and provide a written framework for legal conduct.
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How are decisions made in common law systems?
In common-law systems, decisions are made based on statutes and precedents, which are past rulings that guide future cases. The principle of stare decisis dictates that courts should generally adhere to established precedents, ensuring consistency and predictability in justice. Judges interpret laws and apply them to specific situations, and these interpretations become precedents.
However, judges can distinguish cases based on differing factors and may overrule previous decisions if they are deemed erroneous or unsuited for current application. This allows for the evolution of law alongside societal changes, balancing adherence to precedent with the need for fair and just outcomes.
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Why are judges important in common law systems?
In common-law systems, judges play a vital role in interpreting and applying the law. They create precedents, which are legal decisions that guide future cases, ensuring uniform and predictable justice. This principle, known as stare decisis, means judges are expected to follow earlier decisions, contributing to a body of "judge-made law".
However, judges do more than just apply existing rules. They interpret statutes, adapt them to specific situations, and fill gaps in the law, effectively shaping legal principles. This lawmaking is crucial because it allows the legal system to evolve and address new issues. While judges are not meant to have unrestricted legislative power, their ability to adapt and modify the law ensures fair resolutions and justice in changing circumstances.
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How does a judge use precedent in common law?
In common law, a judge uses precedent, or stare decisis (Latin for "let the decision stand"), by following earlier court decisions when deciding similar cases. This promotes fairness and predictability in the justice system, as similar situations should have similar outcomes.
However, judges can distinguish cases if the facts differ, and higher courts can overrule precedents if they are deemed erroneous or unsuited for current application. This allows for judicial lawmaking and adaptation to changing circumstances. The accumulation of judicial decisions forms the common law, which governs areas not covered by statutes.
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Which countries mainly use common law, and how does it affect their legal systems?
Common-law systems, rooted in English customary law, are used in the United States and most Commonwealth member states.
In these systems, judicial decisions create precedents, which are as authoritative as statutes. This principle, known as stare decisis, ensures consistent and predictable justice by treating similar cases alike. Courts interpret and sometimes fill gaps in statutes, developing rules for future cases. This judge-made law is a significant part of the common law.
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Common law, the body of customary law, based upon judicial decisions and embodied in reports of decided cases, that has been administered by the common-law courts of England since the Middle Ages. From it has evolved the type of legal system now found also in the United States and in most of the member states of the Commonwealth (formerly the British Commonwealth of Nations). In this sense common law stands in contrast to the legal system derived from civil law, now widespread in continental Europe and elsewhere. In another, narrower, sense, common law is contrasted to the rules applied in English and American courts of equity and also to statute law. A standing expository difficulty is that, whereas the United Kingdom is a unitary state in international law, it comprises three major (and other minor) legal systems, those of England and Wales, Scotland, and Northern Ireland. Historically, the common-law system in England (applied to Wales since 1536) has directly influenced that in Ireland but only partially influenced the distinct legal system in Scotland, which is therefore, except as regards international matters, not covered in this article. Beginning in 1973 the legal systems in the United Kingdom experienced integration into the system of European Union (EU) law, which had direct effects upon the domestic law of its constituent states—the majority of which had domestic systems that were influenced by the civil-law tradition and that cultivated a more purposive technique of legislative interpretation than was customary in the English common law. However, the United Kingdom exited the EU in 2020. The regime of human rights represented by the European Convention on Human Rights (1950) has exercised a similar influence in the United Kingdom since the passage by Parliament of the Human Rights Act 1998.
The origin of the common law
The English common law originated in the early Middle Ages in the King’s Court (Curia Regis), a single royal court set up for most of the country at Westminster, near London. Like many other early legal systems, it did not originally consist of substantive rights but rather of procedural remedies. The working out of these remedies has, over time, produced the modern system in which rights are seen as primary over procedure. Until the late 19th century, English common law continued to be developed primarily by judges rather than legislators.
The common law of England was largely created in the period after the Norman Conquest of 1066. The Anglo-Saxons, especially after the accession of Alfred the Great (871), had developed a body of rules resembling those being used by the Germanic peoples of northern Europe. Local customs governed most matters, while the church played a large part in government. Crimes were treated as wrongs for which compensation was made to the victim.
The Norman Conquest did not bring an immediate end to 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, many of whom had joined the conquest with this reward in mind. Serious wrongs were regarded mainly as public crimes rather than as personal matters, and the perpetrators were punished by death and forfeiture of property. The requirement that, in cases of sudden death, the local community should identify the body as English (“presentment of Englishry”)—and, therefore, of little account—or face heavy fines reveals a state of unrest between the Norman conquerors and their English subjects. Government was centralized, a bureaucracy built up, and written records maintained. Controversy exists regarding the extent to which the efficient government of the Anglo-Norman realm was due to the legacy of Anglo-Saxon institutions or to the ruthlessness of the Norman invaders. Elements of the Anglo-Saxon system that survived were the jury, ordeals (trials by physical test or combat), the practice of outlawry (putting a person beyond the protection of the law), and writs (orders requiring a person to appear before a court; see below The development of a centralized judiciary). Important consolidation occurred during the reign of Henry II (1154–89). Royal officials roamed the country, inquiring about the administration of justice. Church and state were separate and had their own law and court systems. This led to centuries of rivalry over jurisdiction, especially since appeals from church courts, before the Reformation, could be taken to Rome.
The Normans spoke French and had developed a customary law in Normandy. They had no professional lawyers or judges; instead, literate clergymen acted as administrators. Some of the clergy were familiar with Roman law and the canon law of the Christian church, which was developed in the universities of the 12th century. Canon law was applied in the English church courts, but the revived Roman law was less influential in England than elsewhere, despite Norman dominance in government. This was due largely to the early sophistication of the Anglo-Norman system. Norman custom was not simply transplanted to England; upon its arrival, a new body of rules, based on local conditions, emerged.

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