
Louisiana is the only state in the United States whose private legal system is based on civil law, rather than common law. This means that Louisiana does not recognize common-law marriages, which are marriages formed without an official license or ceremony. While Louisiana does not allow common-law marriages to be formed within the state, it does recognize valid common-law marriages established in states where they are legal.
| Characteristics | Values |
|---|---|
| Common-law marriage recognition | Louisiana does not recognize common-law marriages within the state. However, it does recognize valid common-law marriages from other states. |
| Legal requirements | Louisiana requires couples to obtain a marriage license and participate in a formal ceremony to be legally recognized as married. |
| Property rights | Unmarried partners do not have automatic property rights. |
| Inheritance rights | Common-law spouses may not have the same inheritance rights as formally married couples. |
| Criminal law | Largely based on common law. |
| Administrative law | Similar to the administrative law of the federal government and other states. |
| Procedural law | Generally in line with that of other U.S. states. |
| Civil law | Based on French and Spanish codes and ultimately Roman law, with some common law influences. |
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What You'll Learn

Louisiana's criminal law is based on common law
Louisiana's legal system is unique in the United States. While the other 49 states follow common law, Louisiana is the only state to follow civil law. This is because Louisiana was historically part of the French and Spanish empires, and its legal system reflects this history. The first Louisiana civil code, Digeste de la Loi Civile, was written in French and subsequently translated into English as The Digest of the Civil Laws now in Force in the Territory of Orleans, or the Digest of 1808. The Civil Code of 1825 was enacted in 1824, written in both French and English.
Louisiana's criminal law, however, does largely rest on common law. This means that Louisiana's criminal law is based on the court's interpretation of the law. The Napoleonic Code, often known as the Civil Code, was developed in Spain and France, and because Louisiana was historically owned by these two countries, its legal system is a combination of Spanish and French legal traditions. Louisiana's civil law is deeply rooted in the civilian tradition, which means that judges in Louisiana rule based on their own interpretation of the law, rather than being bound by stare decisis (precedent) like common law courts. This means that the judge's reasoning and interpretation of the law will have little to no effect on future cases. However, civil law does have its own respect for established precedent, known as the doctrine of jurisprudence constante.
Louisiana's private law is based on civil law, with some common law influences. For example, Louisiana does not recognize common-law marriage within the state, but it does recognize common-law marriages established in states where they are legal. This means that if a couple moves to Louisiana from a state where common-law marriage is recognized, Louisiana will typically treat them as married. Common-law marriage, also known as informal marriage or marital cohabitation, is when a couple lives together and presents themselves as married without obtaining a marriage license or holding a formal ceremony. While Louisiana does not recognize common-law marriages formed within the state, it does follow community property laws, which apply only to legally married couples.
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Louisiana does not allow common-law marriages
Despite this, Louisiana does recognise valid common-law marriages established in states where they are legal. For example, if a couple moves from a state that provides legal rights for common-law marriages, such as Texas or Colorado, Louisiana will usually honour that status. Louisiana courts will treat such couples as married, and they will need to go through a formal divorce to legally separate and divide property under Louisiana divorce laws.
In states that permit common-law marriages, couples are usually required to live together for quite a while and act as if they are married to each other. This may mean referring to each other as "my husband" or "my wife", using the same last name, and introducing themselves to others as a married couple.
Louisiana's legal system is based on civil law principles, which mandate that unmarried couples formalise their union through a marriage license and ceremony to be legally recognised as married. As a result, individuals in Louisiana seeking the legal rights and benefits of a married couple must adhere to the official process outlined by state law.
While Louisiana has a strong presumption against common-law marriage, it is important to note that the legal requirements for common-law marriage can vary significantly depending on the jurisdiction. Therefore, unmarried couples considering common-law marriage should be aware of the laws surrounding it in Louisiana.
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Common-law marriages in other states are usually recognised in Louisiana
Louisiana's legal system does not acknowledge common-law marriages formed within the state. This means that an unmarried couple living together in Louisiana without a formal marriage ceremony and license is not considered a legally married couple under Louisiana law. Despite presenting themselves as spouses and cohabitating, they are not granted the legal status of common-law spouses. Instead, Louisiana firmly adheres to civil law principles, which mandate that unmarried couples formalize their union through a marriage license and ceremony to be legally recognized as married.
However, Louisiana does recognize common-law marriages from other states where it is legal. This means that if a couple moves from a different state that provides legal rights for common-law marriages, Louisiana will typically honor that status and treat them as a married couple. Louisiana courts will handle their case in the same way they would for a couple that was officially married, including in cases of divorce or division of property.
The recognition of common-law marriages from other states is based on the United States Constitution's full faith and credit clause, which states that all states must respect the laws of other states. This means that states without common-law marriage must still recognize a common-law marriage from a state where it is legal. However, this only applies if the couple's relationship meets all the requirements of a common-law marriage in the state where it was established.
While Louisiana does not allow common-law marriages, there are a handful of states that do, including Alabama, Colorado, the District of Columbia, Iowa, Kansas, Montana, Rhode Island, South Carolina, Texas, and Utah. Additionally, some states have abolished common-law marriage but still recognize them if they began before a certain date or for a specific purpose.
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Louisiana's civil law is based on French and Spanish codes
The first Louisiana civil code, Digeste de la Loi Civile, was written in French and enacted on March 31, 1808. It was translated into English as The Digest of the Civil Laws now in Force in the Territory of Orleans, or the Digest of 1808. This code proved problematic because the Louisiana Supreme Court found that the Spanish law in force prior to the Digest's enactment was still in effect unless contradicted by the Digest. In response, the General Assembly tasked Justice Derbigny and attorneys Moreau-Lislet and Livingston with drafting a new, fuller code in French and English that formally repealed prior law. This code, the Civil Code of 1825, was enacted on April 12, 1824.
Despite popular belief that the Louisiana Civil Code is derived from the Napoleonic Code, historians have found that this is not the case. The similarities between the two are because both stem from common sources, namely the 1800 Draft of the Napoleonic Code. The Napoleonic Code was not enacted in France until 1804, one year after the Louisiana Purchase. Original notes of the 1808 Digest drafters state that their goal was to base Louisiana law on Spanish law, with no mention of the Napoleonic Code.
Louisiana's civil law tradition has several implications. For example, Louisiana's constitution does not contain a right to a trial by jury in civil cases, although this right is contained in the Louisiana Revised Statutes. Additionally, appellate courts have broader discretion to review findings of fact by juries in civil cases, and damages are apportioned differently from in common law jurisdictions. Louisiana also did not adopt Articles 2 and 2A of the Uniform Commercial Code (UCC) due to inconsistencies with civil law traditions governing the sale and lease of goods.
Louisiana's civil law tradition is deeply rooted in the state's private law, and to a lesser extent, its criminal law. One key distinction between civil law and common law is that while common law courts tend to rule based on precedents, judges in Louisiana rule based on their own interpretation of the law. However, civil law also has its own respect for established precedent, known as the doctrine of jurisprudence constante.
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Common-law spouses do not have the same legal rights as married couples
Louisiana does not recognize common-law marriages formed within the state. Common-law marriage, also known as informal marriage, is a legally recognized union where a couple lives together for a significant period and presents themselves as married to others. Louisiana's legal system mandates that unmarried couples formalize their union through a marriage license and ceremony to be legally recognized as married.
However, Louisiana does recognize valid common-law marriages established in states where they are legal. For example, common-law marriages are recognized in Colorado, Iowa, Kansas, Montana, Rhode Island, Texas, Utah, Oklahoma, and the District of Columbia. If a couple moves to Louisiana from a state that recognizes common-law marriages, Louisiana courts will typically treat them as a married couple.
It is important to note that the requirements for establishing a common-law marriage vary among the states that do recognize it. Generally, couples must live together and act as if they are married without having a wedding or obtaining a marriage license. They may introduce themselves as a married couple, use the same last name, and share finances. However, living together for a long time is usually not enough to establish a common-law marriage, and public perception of the relationship can also play a role.
The lack of recognition of common-law marriages in Louisiana means that unmarried couples do not have the same legal rights as married couples. Unmarried partners do not have automatic property rights, and in the event of a separation, the courts have no discretion to reallocate assets. Additionally, unmarried partners do not have the automatic right to inherit from one another, and spousal support or alimony is only available to legally married couples. To protect their rights, unmarried couples in Louisiana can create legal documents such as cohabitation agreements, wills, trusts, or powers of attorney for healthcare and finances.
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Frequently asked questions
Common law in Louisiana is based on civil law principles from France and Spain, with some influence from Roman law. Louisiana's criminal law also has some common law influences.
No, Louisiana does not recognize common-law marriage within the state. It only recognizes common-law marriages that were established in states where it is legal, such as Texas and Colorado.
Unmarried couples living together in Louisiana do not have the same legal rights as married couples, particularly regarding inheritance and










































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