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Case law
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Case law (also known as decisional law or judicial precedent) is the general term for the principles and rules of law set forth in judicial opinions from courts of law. Case law incorporates courts' decisions from individual cases and encompasses courts' interpretations of statutes, constitutional provisions, administrative regulations and, in some cases, law originating solely from the courts. Case law is often published in print law reports or reporters (and increasingly on court websites) to establish precedent - rules to apply in future court decisions dealing with similar situations.
For countries with a common law legal system, such as in the United Kingdom, United States, and most of the Commonwealth of Nations, case law is a major source of law.
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Case law (also known as decisional law or judicial precedent) is the general term for the principles and rules of law set forth in judicial opinions from courts of law. Case law incorporates courts' decisions from individual cases and encompasses courts' interpretations of statutes, constitutional provisions, administrative regulations and, in some cases, law originating solely from the courts. Case law is often published in print law reports or reporters (and increasingly on court websites) to establish precedent - rules to apply in future court decisions dealing with similar situations.
For countries with a common law legal system, such as in the United Kingdom, United States, and most of the Commonwealth of Nations, case law is a major source of law. In general, courts in common law countries treat the decisions of higher appellate courts as normative - laying down rules that should, or in some cases must, be used to decide similar legal disputes (called "binding precedent"). In countries with legal systems that follow the civil law tradition derived from Roman law, however, the courts are not strictly bound by rules and principles from case law.
Case law in civil law systems
In the civil law tradition, case law formally plays a minor role compared to the status of the civil code; however, judicial interpretation of the civil code, interpreting the legal meaning of the code's provisions, clarifying them, and providing for unforeseen developments, is often referred to as a jurisprudence constante. In France, the jurisprudence constante of the Cour de cassation (for civil and penal cases) or the Conseil d'État (for administrative cases) is in practice equivalent to case law, and is considerably important in certain areas such as labor law and administrative law. In particular, the Conseil d'État and the Constitutional Council have adopted "fundamental principles" that statutes and regulations must follow, even when those principles were not explicitly written in statutes.
The legal systems of the Nordic countries are sometimes included among the civil law systems, but as a separate branch, and sometimes counted as separate from the civil law tradition. In Sweden, for instance, case law arguably plays a more important role than in some of the Continental civil law systems. The two highest courts, the Supreme Court (Högsta domstolen) and the Supreme Administrative Court (Regeringsrätten), have the right to set precedent which is binding on all future application of the law. However, such precedents might be overturned by the highest courts, which means that the principle of stare decisis is not as strictly adhered to as in the common law. Courts of appeal, both general courts (hovrätter) and administrative courts (kammarrätter) may also issue decisions that act as guides for the application of the law, but these decisions may be overturned by higher courts.
Case law in common law systems
In the common law tradition, case law interprets laws, via precedents, based on how prior cases have been decided. Case law governs the impact court decisions have on future cases. Unlike most civil law systems, common law systems follow the doctrine of stare decisis in which lower courts usually make decisions consistent with previous decisions of higher courts.
Generally speaking there is no direct oversight that appellate courts have over a court of record. If a lower court judge acts against precedent and the case is not appealed, the lower court decision will stand. This may occur more frequently than has been documented as an appeal is usually quite expensive to prepare.
A court may rule against a precedent that is outdated — that is, the court believes that developments or trends in legal reasoning render the precedent inapplicable. In doing so, the court may wish to help the law evolve by ruling against precedent and thereby indirectly inducing a losing party to appeal. If the court successfully induces the appeal, the appellate court will have an opportunity to review the lower court's decision and may adopt the lower court's reasoning and overturn previous case law. This may happen several times as the case works its way through intermediate appellate systems. Lord Denning, first of the High Court of Justice, later of the Court of Appeal, provided a famous example of this evolutionary process in his development of the concept of estoppel starting in the world renowned High Trees case: Central London Property Trust Ltd v. High Trees House Ltd [1947] K.B. 130.
How case law is made
The different roles of case law in civil and common law traditions create differences in the way that courts render decisions. Common law courts generally explain in detail the rationale behind their decisions with numerous citations to previous decisions and other authority (called ratio decidendi). By contrast, decisions in civil law jurisdictions are generally very short, referring only to statutes. The reason for this difference is that these civil law jurisdictions adhere to a tradition that the reader should be able to deduce the logic from the decision. Courts in civil law jurisdictions also render their decisions so that, in some cases, it is somewhat difficult to apply previous decisions to the facts presented in future cases.
Some pluralist systems, such as Scots law in Scotland and so-called civil law jurisdictions in Quebec and Louisiana, do not precisely fit into the dual "common-civil" law system classifications. Such systems may have been heavily influenced by the Anglo-American common law tradition; however, their substantive law is firmly rooted in the civil law tradition. Because of their position between the two main systems of law, these types of legal systems are sometimes referred to as "mixed" systems of law.
Law professors in common law traditions play a much smaller role in developing case law than professors in civil law traditions. Because court decisions in civil law traditions are brief and not amenable to establishing precedent, much of the exposition of the law in civil law traditions is done by academics rather than by judges; this is called doctrine and may be published in treatises or in journals such as Recueil Dalloz in France. Historically, common law courts relied little on legal scholarship; thus, at the turn of the twentieth century, it was very rare to see an academic writer quoted in a legal decision (except perhaps for prominent jurists such as Coke and Blackstone). Today academic writers are often cited in legal decisions as persuasive authority; often, they are cited when judges are attempting to implement reasoning that other courts have not yet adopted, or when the judge believes the academic's restatement of the law is more compelling than can be found in precedent. Thus common law systems are adopting one of the approaches long common in civil law jurisdictions.
Judges may refer to other types of persuasive authority to reach a decision in a case. Widely cited non-binding sources include legal encyclopedias such as Corpus Juris Secundum and Halsbury's Laws of England, or the published work of law commissions such as the American Law Institute.
In federal or multi-jurisdictional law systems there may exist conflicts between the various lower appellate courts. Sometimes these differences may not be resolved and it may be necessary to distinguish how the law is applied in one district, province, division or appellate department. Usually only an appeal accepted by the court of last resort will resolve such differences and, for many reasons, such appeals are often not granted.
See also
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