Korean law is a codified civil law system built on the 1987 Constitution and a set of statutory codes adapted from the Continental European tradition. Private relationships, criminal offenses, business activity, employment, data handling, and immigration each sit under their own principal statute, and disputes move through a tiered court system topped by the Supreme Court and policed, on constitutional questions, by a separate Constitutional Court. Statutes do the heavy lifting; judges interpret the code rather than build law case by case.
The Constitution and the Constitutional Court
The 1987 Constitution is the supreme law, and no statute or government act can contradict it.1Constitute. Korea (Republic of) 1948 (rev. 1987) Constitution It guarantees fundamental rights including freedom of assembly, the right to a fair trial, and the right to petition the government, and it created the Constitutional Court as a body entirely separate from the ordinary judiciary.
Article 111 gives the Constitutional Court five jobs: reviewing whether a law is constitutional when an ordinary court refers the question, deciding impeachment cases, ordering the dissolution of political parties that threaten the democratic order, settling jurisdictional disputes between government agencies, and hearing individual constitutional complaints.1Constitute. Korea (Republic of) 1948 (rev. 1987) Constitution Nine justices sit on the court. Three are selected by the National Assembly, three nominated by the Chief Justice of the Supreme Court, and three chosen by the President.2Constitutional Court of Korea. Constitutional Court of Korea – Council of Justices
Striking down a law, sustaining an impeachment, dissolving a political party, or upholding a constitutional complaint takes the agreement of at least six of the nine justices. The court must also issue its decision within 180 days of receiving a case.3Korea Legislation Research Institute. Constitutional Court Act Its decisions are final.
Citizens can file a constitutional complaint directly, without first bringing a case in an ordinary court. The court has used this power to strike down laws on topics ranging from internet censorship to national security restrictions.
How the Courts Are Organized
The Court Organization Act divides the ordinary judiciary into six categories: the Supreme Court, High Courts, the Patent Court, District Courts, Family Courts, and Administrative Courts.4Korea Legislation Research Institute. Court Organization Act Most cases enter at the district court level, heard by a single judge or a three-judge panel depending on complexity and the amount in dispute. Family and administrative matters go through specialized branches.
A party unhappy with a district court decision can appeal to a High Court, which reviews both the facts and the legal reasoning. Beyond that, the Supreme Court hears final appeals and reviews whether the law was applied correctly rather than reweighing evidence.
The Supreme Court has long consisted of a Chief Justice and thirteen other justices.5Supreme Court of the Republic of Korea. Courts In March 2026, the National Assembly enacted a revision to the Court Organization Act expanding the bench to 26 justices. The expansion phases in starting March 2028, with four new seats added per year over three consecutive years. It is the largest structural change to the court since the 1987 democratization and has driven intense debate over appointments and judicial independence.
The Civil Act
The Civil Act (Act No. 471, originally enacted in 1958) is the foundation for private legal relationships.6WIPO Lex. Civil Act It covers general principles, property rights, obligations between parties, family, and inheritance. A core provision requires that all rights be exercised in good faith, and Korean courts apply this principle consistently when resolving disputes.
Legal adulthood begins at age nineteen, and a person can enter binding contracts independently from that point.7Korea Legislation Research Institute. Civil Act Contracts need a clear offer and acceptance to be enforceable, and courts weigh written documentation heavily. The obligations section covers everything from loan repayment to tort damages. The family provisions regulate marriage, divorce, and parental authority. The succession rules fix how a deceased person’s assets pass to heirs when there is no will, following a statutory order of priority among family members.
Divorce Involving Foreign Nationals
Korean courts can hear divorces involving foreign nationals when there is a substantial connection to the country. Under the Korean International Private Law, a court has jurisdiction if one spouse habitually resides in Korea and the couple’s last shared residence was there, or if the petitioning spouse and any minor children live in Korea. Both spouses being Korean nationals also satisfies the requirement. The petitioner does not need to physically reside in Korea to file, and the respondent’s nationality or the country where the marriage was registered does not block the case. When a spouse’s whereabouts are unknown, a court can grant an uncontested divorce after the petitioner shows sufficient efforts to locate the missing party.
Criminal Law and Procedure
Criminal offenses are defined by the Criminal Act (Act No. 293, originally enacted in 1953) and prosecuted under the Code of Criminal Procedure.8United Nations Office on Drugs and Crime. Criminal Act The Criminal Act sets a general minimum fine of 50,000 won for any offense punishable by a fine, with maximums ranging from a few million won for lesser offenses to tens of millions for more serious ones.9Korean Ministry of Government Legislation. Criminal Act Imprisonment ranges from short-term detention to life sentences.
The Prosecution Service holds significant power, working with police to investigate and deciding whether to bring charges. After an arrest, police must request a detention warrant from a judge within 48 hours or release the person. The rule appears in Article 200-2 of the Criminal Procedure Act and applies to ordinary and emergency arrests alike.10United Nations Office on Drugs and Crime. Criminal Procedure Act Defendants who cannot afford a private attorney get court-appointed counsel.
Korean trials are more inquisitorial than adversarial. Judges actively examine witnesses and defendants rather than leaving questioning to the lawyers. The court participates directly in establishing the facts.
Juries That Advise, Not Decide
Since 2008, the Act on Citizen Participation in Criminal Trials has allowed ordinary citizens to sit as jurors in certain serious criminal cases. Eligible cases are generally those that fall under the jurisdiction of a three-judge panel at the district court level.11Korea Legislation Research Institute. Act on Citizen Participation in Criminal Trials A defendant can opt out of a jury trial, and the court can exclude certain cases.
The jury’s verdict is not binding. Jurors deliberate and deliver an opinion on guilt and sentencing, but the presiding judge makes the final decision. If the judgment differs from the jury’s verdict, the written ruling must explain why.11Korea Legislation Research Institute. Act on Citizen Participation in Criminal Trials
Defamation Covers True Statements
Article 307 of the Criminal Act makes publicly revealing facts that damage another person’s reputation a criminal offense even when the statement is entirely true. Most Western systems treat defamation as a civil matter with truth as a complete defense; Korea does not.
Article 310 creates a narrow exception: a true statement avoids criminal liability only if it was made solely in the public interest. Accuracy alone is not enough. Prosecutors and courts examine the speaker’s motive, and a private grievance or commercial purpose keeps the liability in place. Penalties include imprisonment.
Drug Offenses
South Korea enforces some of the strictest drug laws among developed nations. Under the Narcotics Control Act, possession or use of cannabis can draw up to five years in prison or a fine of up to 50 million won. Possession of harder narcotics or psychotropic substances carries up to ten years or fines up to 100 million won. The penalties apply regardless of whether the substance was legal where it was obtained, and Korean authorities have been known to test returning travelers.
Commercial Law, Foreign Investment, and Competition
Business activity sits under the Commercial Act (Act No. 1000, originally enacted in 1962), which sets the rules for forming and running companies, the duties of directors, and the rights of shareholders.12WIPO Lex. Commercial Act The joint-stock company is the most common structure for larger enterprises and requires court registration and specific disclosures.
Foreign capital is governed principally by the Foreign Investment Promotion Act.13U.S. Department of State. 2025 Investment Climate Statements – South Korea Most sectors are open, with restrictions in areas touching national security, public health, or environmental protection. Investing in a defense industry company requires advance ministry permission rather than a simple notification.14United Nations. Foreign Investment Promotion Act (Republic of Korea) For most other investments, the investor files a report and receives an acceptance certificate.
The Korea Fair Trade Commission enforces competition rules under the Monopoly Regulation and Fair Trade Act. It reviews mergers, investigates cartels, polices abuse of market dominance, and acts on unfair trade practices. Administrative fines for cartel violations can reach 10 percent of the relevant turnover generated during the violation period, and courts can award up to triple damages in private cartel suits. Individuals involved in anticompetitive conduct face up to three years in prison on top of financial penalties.
Labor Standards
The Labor Standards Act sets the baseline for employee protections across most workplaces. The work week is capped at 52 hours, including overtime, with weekends and public holidays counted toward the total. Employers who violate the limits face administrative penalties. The 2026 hourly minimum wage is ₩10,320 (roughly $7.44 USD), or about ₩2,156,880 per month for a full-time worker.15Korea.net. Council Sets Minimum Hourly Wage in 2026 at KRW 10,320
Severance is mandatory for any employee who has worked continuously for at least one year and averaged 15 or more hours per week. The formula is 30 days of average wages for each year of continuous service. The Employee Retirement Benefit Security Act establishes the obligation, and it covers Korean and foreign workers alike. Employers cannot waive or contract around it, and unpaid severance is a frequent source of labor disputes.
Data Privacy Under PIPA
South Korea’s Personal Information Protection Act is one of the most comprehensive data privacy laws in Asia, and a major overhaul promulgated in March 2026 significantly strengthened its enforcement tools. The amended law introduces a penalty ceiling of 10 percent of total relevant turnover for the most serious violations, putting it on par with Europe’s GDPR in financial exposure. The aggravated penalty applies when a company commits a repeat violation within three years, when an intentional or grossly negligent breach affects more than ten million data subjects, or when a company fails to comply with a corrective order.
The 2026 amendments also introduce explicit CEO accountability. Representative directors now carry personal statutory responsibility for implementing effective data protection measures, including allocating sufficient staff and budget. Companies meeting certain size thresholds must obtain board approval to appoint or dismiss their Chief Privacy Officer, and those appointments must be reported to the Personal Information Protection Commission. The provisions took effect in September 2026, with mandatory security certification requirements for large data processors phasing in by July 2027.
Military Service
All male South Korean citizens must perform compulsory military service beginning at age 18. Active-duty service lasts roughly 18 to 21 months depending on the branch, with Army conscripts generally serving the longest. Failure to report without an approved exemption carries criminal penalties. Limited alternative service exists for individuals with certain physical conditions or those who qualify for specialized roles, but outright avoidance is rare and heavily stigmatized. Dual citizens holding Korean nationality are also subject to this requirement unless they renounce Korean citizenship before reaching military age.
Residency for Foreign Nationals
Foreign nationals seeking long-term residence work through a tiered visa system, and the F-5 permanent residency visa is the most sought-after status. The general path, F-5-1, requires at least five consecutive years on eligible visas, stable income at twice Korea’s gross national income per capita, regular tax payments, and completion of the Korea Immigration and Integration Program.
Several specialized F-5 categories target specific groups:
- Korean university graduates (F-5-10): a bachelor’s degree with three years of Korean work experience, or a master’s degree with one year, in a field related to the degree.
- High-tech PhD holders (F-5-9): a doctoral degree from a foreign university in a designated field such as artificial intelligence, semiconductors, or biotechnology, with current or offered employment at a Korean institution.
- High-value investors (F-5-25): an investment of at least ₩3 billion into approved economic projects, maintained for five years.
- Foreign pension recipients (F-5-13): applicants aged 60 or older receiving steady pension income from abroad, with income at twice Korea’s gross national income per capita.
- Points-based conversion (F-5-16): holders of the F-2-7 points-based visa who have maintained that status for at least three years and meet elevated scoring requirements.
Each category carries its own documentation and financial requirements, and processing times vary. Immigration rules change frequently, so verifying current requirements with the Korea Immigration Service before applying is essential.