The Four Major Social Insurance Programs are a core social security system in Korea, in which society as a whole shares the risks—such as illness, old age, unemployment, and work-related injuries—that individuals would find difficult to bear on their own through an insurance system. To put it simply, individuals and businesses that fall under the statutory enrollment criteria are, in principle, required to enroll. However, not everyone enrolls in the four insurance programs in the same way; the eligibility criteria vary depending on status and employment type, such as workplace enrollees, regional enrollees, dependents, business-based enrollees, self-employed individuals, labor providers, and public officials.

One-Line Conclusion: For most eligible individuals, it is not a “choice” but an “obligation”

The four major social insurance programs are not products that individuals can choose based on their needs, like private insurance. Eligibility for National Health Insurance, National Pension, Employment Insurance, and Workers’ Compensation Insurance is determined by law, and if you fall under the eligible category, you are obligated to pay premiums and file reports.

However, this does not mean that “you must enroll in all four without exception.” For example, civil servants, military personnel, and private school faculty may be covered by a separate occupational pension system instead of the National Pension, and Employment Insurance may also have exemptions or separate criteria that differ from those for general workers. Students and full-time homemakers with no income, very part-time workers, self-employed individuals, foreign nationals, and labor providers must also review the specific criteria.

The Role of Social Insurance in the Social Security System

South Korea’s Framework Act on Social Security defines social security as comprising social insurance, public assistance, and social services. Social insurance is a system that safeguards citizens’ health and income by addressing social risks they may face through an insurance-based approach.

Category Primary Target Funding Structure Representative Examples Key Functions
Social Insurance All individuals subject to statutory enrollment and coverage Primarily funded by premiums from subscribers and employers, with partial government support National Health Insurance, National Pension, Employment Insurance, Workers’ Compensation Insurance Shared burden of risks related to illness, old age, unemployment, and accidents
Public Assistance Low-income individuals struggling to make ends meet Tax-funded National Basic Livelihood Security, Medical Aid Guarantee of a minimum standard of living and support for self-reliance
Social Services Citizens in need of assistance with care, rehabilitation, health, employment, housing, etc. A mix of taxes, user fees, and public funds Care services for the elderly, people with disabilities, and children Improving quality of life and supporting social participation

Korea’s Four Major Social Insurance Programs at a Glance

System Primary Risks Covered Main Eligibility Criteria Premium Structure Key Functions
National Health Insurance Illness, injury, and medical expenses Generally covers residents of South Korea, with exceptions for Medical Aid recipients, etc. Employers and employees share the cost for workplace enrollees; regional enrollees are assessed based on income and assets Alleviates the burden of medical expenses, provides health screenings, and ensures access to medical services
National Pension Loss of income due to old age, disability, or death Generally covers citizens residing in Korea who are 18 years of age or older but under 60, with exceptions for those enrolled in other public pension plans Workplace subscribers split the cost equally between the employee and the employer; regional subscribers bear the full cost Old-age pensions, disability pensions, survivor pensions
Employment Insurance Unemployment, re-employment, vocational training, and job retention In principle, mandatory coverage applies to businesses with one or more employees, with exceptions for certain businesses and workers Unemployment insurance premiums are shared between employers and employees, while premiums for employment stability and vocational training are borne by the employer Job-seeking allowances, employment promotion, vocational training, and maternity and childcare-related benefits
Workers’ Compensation Insurance Work-related accidents, illnesses, disabilities, and death Applies, in principle, to all businesses or workplaces that employ workers Employers generally bear the full cost, with rates varying based on industry-specific risk levels Medical treatment benefits, temporary disability benefits, disability benefits, survivor benefits, and rehabilitation support

National Health Insurance: A System for Sharing Medical Cost Risks

National Health Insurance is a social insurance program designed to ensure that individuals or households do not have to bear the burden of medical expenses arising from illness or injury alone. While coverage under private insurance varies depending on premium levels and contract terms, the National Health Insurance provides benefits based on statutory standards, prioritizing medical necessity regardless of the premium burden.

There are three key features of the National Health Insurance system.

  1. Mandatory Enrollment: All residents of South Korea are enrolled as health insurance subscribers or dependents, unless they fall under statutory exceptions.
  2. Premiums Based on Ability to Pay: Premiums for workplace subscribers are calculated based on salary, while those for regional subscribers are calculated based on factors such as income and assets.
  3. Benefits Based on Medical Need: The system does not provide broader statutory benefits to those who pay higher premiums; rather, it guarantees necessary medical services in accordance with laws, regulations, and benefit criteria.

The health insurance premium rate for 2026 has been set at 7.19%. The Long-Term Care Insurance premium, levied alongside the Health Insurance premium, is set at 0.9448% of income and 13.14% of the Health Insurance premium for 2026. Since premium rates are subject to annual change, you must check the official notice for the relevant year and the National Health Insurance Service’s calculation results to determine the actual amount deducted from your pay or the regional insurance premium.

National Pension: A Public Pension System to Prepare for Income Gaps After Retirement

The National Pension is a system where individuals pay premiums while they are earning an income, and pension benefits are provided to guarantee a basic income when income decreases due to old age, disability, or death. In principle, Korean citizens residing in the country who are at least 18 years of age but under 60 are eligible to enroll. However, those covered by other public pension systems—such as civil servants, military personnel, private school faculty and staff, and employees of special post offices—are generally excluded from the National Pension.

National Pension subscribers are broadly categorized as follows:

Enrollment Type Description Mandatory
Workplace Members Employees and employers at workplaces Mandatory in principle
Regional Members Self-employed individuals, farmers, fishermen, and other income-earners who are not workplace members Mandatory in principle
Voluntary Members Individuals who are not subject to mandatory enrollment but choose to enroll Optional
Voluntary Continued Enrollees Individuals who continue enrollment after age 60 to extend their enrollment period Optional

The National Pension premium rate for 2026 is 9.5% of monthly income. For workplace enrollees, employees and employers each bear half of the cost, while regional enrollees bear the full cost themselves. Furthermore, the National Pension is not simply a savings plan where individuals receive back exactly what they paid in. The benefit calculation formula incorporates the average income of all subscribers, providing a relatively greater income replacement effect for low-income subscribers. It also includes an intergenerational sharing structure, where funds contributed by the current working-age generation are used to pay benefits to the current beneficiary generation.

Employment Insurance: More Than Just Unemployment Benefits—It’s a “Safety Net for Re-employment”

Employment insurance is a system designed to alleviate livelihood insecurity when workers lose their jobs and to assist with re-employment and vocational skills development. In principle, any business with one or more employees is automatically subject to employment insurance. However, certain small-scale unincorporated businesses in agriculture, forestry, and fisheries; household employment; and small-scale construction projects may be exempt, and workers with very short working hours—those with a low monthly scheduled working time—may also be exempt under certain criteria.

Unemployment benefits, the primary benefit under Employment Insurance, are not automatically paid simply because premiums have been paid. They are paid only when an insured event—unemployment—occurs, eligibility requirements are met, and active job-search efforts are recognized. For workers who left their jobs on or after October 1, 2019, unemployment benefits are calculated based on 60% of their average wage prior to termination, and the number of benefit days ranges from a minimum of 120 to a maximum of 270, depending on age and the duration of Employment Insurance enrollment.

Employment Insurance serves the following functions:

  • Income protection for the unemployed during their job search
  • Promotion of re-employment and support for vocational training
  • Support for businesses to maintain employment and ensure job stability
  • Benefits to support work-life balance, such as maternity leave and parental leave

Workers’ Compensation Insurance is a system that provides prompt and fair compensation to workers who suffer work-related accidents or illnesses, and supports their rehabilitation and reintegration into society. In principle, workplaces employing one or more workers are subject to workers’ compensation insurance.

A key feature of workers’ compensation insurance is that employers bear the cost of premiums. Employees do not have workers’ compensation insurance premiums deducted from their wages. The workers’ compensation insurance premium rate varies based on factors such as industry-specific risk levels and the insurance fund’s financial balance; the average premium rate for 2026 has been officially set at 1.47%. However, the actual rate for a specific workplace may vary depending on the type of business and individual circumstances.

Even if an employer has not filed a Work Injury Insurance enrollment report, an employee can file a work injury claim if a work-related injury occurs at a covered workplace. If the Korea Workers’ Compensation and Welfare Service recognizes the injury as work-related, insurance benefits may be paid, and the employer may be subject to premium collection or penalties for failure to report or pay premiums.

Why Is Enrollment Mandatory?

If social insurance were left solely to individual choice, those who need it most would opt out due to the cost of premiums, while those with lower risk would not enroll, making it difficult to sustain the system as a whole. Therefore, the scope of mandatory enrollment is broadly defined, and premiums are levied based on income or the size of the business.

Mandatory enrollment in the four major social insurance programs is based on the following reasons:

  • Risk Sharing: Since illness, old age, unemployment, and workplace accidents can happen to anyone, society as a whole shares the risk.
  • Income Security: It provides a minimum safety net in situations where income plummets due to medical expenses, unemployment, retirement, or accidents.
  • Income Redistribution: Those with greater ability to pay contribute more, and benefits are transferred to those facing risks.
  • Labor Market Protection: It prevents employers from leaving workers uninsured in order to save on insurance premiums.
  • Reduction of Social Costs: It prevents individuals from falling into poverty or facing medical bankruptcy, thereby reducing long-term public costs.

Exceptions and Points to Note

While enrollment in the Four Major Social Insurance Programs is mandatory in principle, specific requirements must be verified to determine actual eligibility.

Situation Points to Check
Civil servants, military personnel, and private school faculty Occupational pensions may apply instead of the National Pension, and Employment Insurance rules may differ from those for general workers.
Full-time homemakers and students with no income They may not be subject to mandatory National Pension enrollment, but voluntary enrollment may be possible in some cases.
Part-time and very short-hour workers The eligibility criteria for Employment Insurance and the National Pension may vary depending on working hours, length of continuous employment, income, and other factors.
Self-Employed Individuals Health Insurance and the National Pension are primarily covered under the regional enrollment system, while Employment Insurance requires consideration of separate programs, such as the Self-Employed Persons’ Employment Insurance.
Freelancers and Service Providers Since there are separate occupational categories and compensation criteria for special provisions regarding Employment Insurance and Workers’ Compensation Insurance, eligibility should not be determined based on contract type alone.
Foreign Nationals and Overseas Koreans Coverage under Health Insurance and Employment Insurance may vary depending on residence status, length of stay in Korea, and whether the employer is enrolled in the workplace insurance program.
Failure to Enroll Employees Even if an employee consents, failure to enroll a legally required employee can constitute a violation.

Reference: Insurance Premium Rates as of 2026

Insurance premium rates are subject to change based on laws, regulations, and financial conditions specific to each system. The table below summarizes the key criteria confirmed in officially announced documents and legislation as of 2026.

Item Key Standards for 2026 Party Responsible for Payment
National Pension 9.5% total For workplace subscribers: 4.75% by the employee, 4.75% by the employer; for regional subscribers: paid entirely by the individual
Health Insurance 7.19% Workplace subscribers: employees and employers each bear half; regional subscribers: calculated separately
Long-Term Care Insurance 0.9448% of income, 13.14% of health insurance premiums Linked to health insurance premiums
Employment Insurance (Unemployment Benefits) 1.8% Shared equally between employees and employers
Employment Stability and Vocational Skills Development 0.25%–0.85% depending on business size Paid by employers
Workers’ Compensation Insurance Average 1.47%, varies by industry Paid by employers

Checklist for Employees and Employers

If You Are an Employee

  • Check your pay stub to confirm whether National Pension, Health Insurance, and Employment Insurance premiums have been deducted.
  • As a general rule, workers’ compensation insurance premiums are not deducted from an employee’s wages.
  • To apply for unemployment benefits after leaving a job, you must verify the reason for leaving, your period of insurance coverage, and job-search activity requirements.
  • Even if a company offers to “pay a higher salary by excluding the four major insurances,” you may face long-term disadvantages if you are legally required to enroll.

For Employers

  • When hiring an employee, you must verify your legal reporting obligations, such as registering the establishment and reporting the employee’s eligibility.
  • Part-time workers, daily workers, and foreign workers are not automatically exempt, so you must verify the applicable criteria on a case-by-case basis.
  • If an accident occurs while workers’ compensation insurance is not registered, the employer may face penalties and fines in addition to insurance benefits.
  • Attempts to reduce insurance premium burdens—such as entering into fraudulent freelance contracts, underreporting wages, or failing to enroll employees—can lead to back taxes and legal disputes.

Key Points

The four major social insurance programs serve as a safety net for individuals by reducing the risks associated with medical expenses, old age, unemployment, and workplace accidents, and act as a redistribution mechanism for society as a whole to alleviate poverty and inequality. While insurance premiums may feel like an immediate burden, the purpose of the system is to collectively spread major risks that are difficult for individuals to predict. Therefore, if you are eligible for enrollment, it is important to accurately verify “under what eligibility criteria, according to what standards, and how much you are required to pay” rather than simply deciding “whether or not to enroll.”