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You found a great Korean candidate, negotiated the offer, and now you’re ready to make it official. Then someone mentions “4대보험” and suddenly you’re staring at four separate government agencies, overlapping deadlines, and contribution rates that change every January.
This guide breaks down each of the four mandatory insurances—what they cover, what they cost, and when to enroll—using a concrete salary example. It also covers the compliance traps that catch most foreign employers in the first 30 days.
Covered in this article: – What each of the four insurances actually covers (and why each exists) – Contribution rates and a real monthly cost calculation – Enrollment deadlines and the agencies you’ll actually deal with
Why These 4 Insurances Matter (And What Gets Foreign Founders Wrong)
Most foreign employers treat Korea’s four mandatory insurances as a paperwork formality—something to hand off and forget. That framing gets people into trouble faster than almost any other hiring mistake.
The four insurances are not optional benefits. They are statutory obligations under Korean law, each governed by separate legislation, administered by separate agencies, and subject to separate penalties. Getting one wrong does not excuse the others.
In 2018, I helped a French SaaS startup navigate their first Korean hire—a senior developer they’d been trying to onboard for three months. The founder had assumed their Seoul-based accountant was handling everything. When I walked through the enrollment checklist with them, it turned out only payroll calculation had been set up. None of the four acquisition reports had been filed. We had to scramble to sort out retroactive health insurance and employment insurance filings before the 14-day window closed, and the industrial accident enrollment had already lapsed. That one oversight cost them a full weekend and a hefty correction fee. I’ve seen the same mistake repeated by German, American, and Australian founders with otherwise well-run operations. The problem is never bad intent—it’s a blind spot baked into how foreign employers think about “the paperwork.”
The compliance risk most expats underestimate
Missing an enrollment deadline doesn’t just mean a fine. It means retroactive contributions. The Korean government will assess what you should have paid from the employee’s first day, and you’ll owe that plus penalties, regardless of whether your employee has ever filed a claim.
For employment insurance, penalties under the Employment Insurance Act (고용보험법) can include retroactive premium recovery plus additional charges for late reporting, according to enforcement guidelines published by the Ministry of Employment and Labor (고용노동부). Industrial accident insurance carries similar retroactive exposure under the Industrial Accident Compensation Insurance Act (산업재해보상보험법).
Why “my Korean accountant will handle it” isn’t a strategy
Accountants handle payroll calculation. Enrollment is a separate action you (or someone with your authorization) must initiate with the relevant agencies. An accountant who does not explicitly confirm they are handling your four-insurance registrations is almost certainly not doing it.
Ask directly: “Are you filing the 취득 신고 (acquisition report) for all four insurances on my behalf?” If they hesitate, you already have your answer.
Insurance #1 — National Pension (국민연금)
National Pension is the foundation of Korea’s four mandatory social insurances—and the one most frequently omitted from foreign-employer guides. Every employee and employer must enroll. There is no opt-out, and no salary threshold that exempts a full-time worker.
What it covers and who contributes
Coverage: Monthly retirement pension paid after age 62 (rising incrementally to 65 under current legislation), disability pension for contributors who become work-impaired, and survivors’ pension for dependents of deceased contributors.
Contribution split (as of 2025–2026; verify the current year’s rate at nps.or.kr before budgeting):
- Employee: 4.5% of monthly standard income
- Employer: 4.5% of monthly standard income
- Combined rate: 9.0%
Contributions are calculated on monthly standard income and capped at an annual ceiling set by the National Pension Service (국민연금공단, NPS). As of 2025, the upper income limit was ₩6,170,000/month, making the maximum monthly contribution per side ₩277,650. The floor is set at the minimum wage—employees earning below this threshold still contribute at the minimum. Verify the current ceiling and floor at nps.or.kr before finalizing payroll budgets.
Enrollment deadline and where to file
File the workplace acquisition report (사업장 가입자 자격 취득 신고) with the NPS within 14 days of the hire date. You can file directly at nps.or.kr or through the government’s unified 4대보험 portal at 4insure.or.kr, which handles pension, health, and employment insurance simultaneously.
Common compliance traps for foreign employers
Foreign employees are not automatically exempt. Most foreign nationals working in Korea on employment visas must enroll in the National Pension. The exception applies only if the employee’s home country has a totalization agreement with Korea that covers pension—agreements exist with the US, Canada, Germany, UK, France, Australia, India, and several others. Even then, exemption is not automatic; the employee must apply for a certificate of coverage from their home country’s social security authority. Do not assume exemption without confirming the applicable treaty and filing the paperwork.
Retroactive exposure is real. If you miss the 14-day enrollment window, NPS will calculate contributions from the actual hire date—not the enrollment date. You owe back contributions plus any applicable late fees.
Insurance #2 — Employment Insurance (고용보험)
Employment insurance is the closest Korean equivalent to unemployment benefits in the West, but it covers more ground than that. It funds unemployment benefits (구직급여), parental leave allowances, and job training subsidies.
It’s the insurance most commonly botched by foreign employers because it involves two separate agencies depending on what you’re filing.
What it covers and who contributes
Coverage: Unemployment benefits for laid-off employees, maternity and paternity leave allowances, and employer subsidies for job training.
Contribution split (as of 2025; verify current rates at moel.go.kr before budgeting): – Employee: 0.9% of monthly wage – Employer: 0.9% of monthly wage (unemployment benefit portion) plus an additional 0.25%–0.85% for employment stabilization and job skills development, depending on company size
The employer’s total rate is slightly higher than the employee’s. For most small foreign-owned companies, expect roughly 1.15%–1.65% of total monthly wages on the employer side. Confirm the applicable employer rate tier for your headcount with the Ministry of Employment and Labor (고용노동부) directly, as the stabilization surcharge brackets change with company size.
Enrollment deadline and monthly cost
You must report the employee’s acquisition (취득 신고) to the Korea Employment Information Service via the 고용보험 EDI system or through the Employment Insurance portal at ei.go.kr within 14 days of the hire date, according to employment insurance enrollment notification rules administered by the Ministry of Employment and Labor (고용노동부).
Miss that window and you’re in retroactive territory.
Common compliance traps for foreign employers
Part-time employees aren’t automatically exempt. Workers under 15 hours per week may qualify for exemption, but the calculation is based on a 4-week average—not a single week.
Contractor reclassification is a real risk. If your “contractor” works set hours, uses your equipment, and follows your direction, Korean labor authorities may reclassify them as an employee. All four insurances then apply retroactively from day one.
Insurance #3 — National Health Insurance (건강보험) + Long-Term Care (장기요양보험)
National Health Insurance (NHI) covers doctor visits, hospital stays, prescription drugs, and most outpatient procedures for your employee and their dependents. Korea’s NHI system is broadly considered one of the more functional single-payer systems in the OECD, according to OECD Health Statistics country profiles.
Mandatory vs. voluntary; your role as employer
Once you hire a full-time employee, NHI enrollment is mandatory—for both of you. There is no opt-out. Your employee cannot waive it in favor of private insurance. As the employer, you are required to enroll the employee through the National Health Insurance Service (NHIS, 건강보험공단) and co-contribute each month.
Calculation method and employee/employer contribution
Rate (as of 2025; verify the current year’s rate at nhis.or.kr before budgeting): The combined NHI rate has been 7.09% of monthly wage in recent years, split equally, according to premium rate announcements from the National Health Insurance Service (NHIS, 건강보험공단). – Employee: 3.545% – Employer: 3.545%
The contribution is calculated on monthly standard wage, not total compensation (bonuses have separate rules). The NHIS sets monthly income brackets and caps—verify your employee’s bracket at nhis.or.kr or through the NHIS English portal.
Registration with NHIS (건강보험공단)
File the workplace acquisition report (사업장 가입자 자격 취득 신고서) with the nearest NHIS branch within 14 days of employment start. You can also file through the government’s 4대보험 unified portal at 4insure.or.kr.
For foreign-owned businesses without a Korean corporate registration, this step sometimes requires a physical visit. Bring your business registration certificate (사업자등록증) and the employee’s ID.
Long-Term Care Insurance (장기요양보험) — billed automatically alongside NHI
This is the line item that surprises every foreign founder. You’ve enrolled in health insurance, you think you’re done, and then a second charge appears on the NHIS invoice.
Long-term care insurance (LTCI) funds nursing home care, home care aides, and medical equipment for elderly or disabled individuals who cannot perform daily activities independently. Korea’s population is aging faster than almost any other OECD country, according to population aging projections from Statistics Korea (통계청). LTCI was introduced in 2008 to address the coming care gap.
LTCI is not a separate enrollment. It is automatically calculated as a percentage of your NHI premium and appears as a second line item on the same NHIS billing statement.
Rate (as of 2025; verify the current year’s rate at nhis.or.kr): The LTCI rate has been set at 12.95% of the NHI premium amount in recent years, according to rate announcements from the National Health Insurance Service (NHIS, 건강보험공단).
In practice, if your monthly NHI contribution as an employer is ₩88,625, you add approximately ₩11,477 on top for LTCI. You cannot opt out. You do not file separately. It just appears—billed and collected entirely through NHIS.
Insurance #4 — Industrial Accident Insurance (산재보험)
Industrial accident insurance (IAI) covers medical treatment, disability compensation, and survivors’ benefits in the event of a workplace injury or occupational illness. In Korea, this is an employer-only cost—employees pay nothing.
Mandatory coverage and exception (you usually cannot opt out)
All businesses with at least one employee are required to enroll under the Industrial Accident Compensation Insurance Act (산업재해보상보험법). There is no minimum employee count threshold for most industries. The narrow exceptions (some household employers, certain agricultural operations) almost certainly do not apply to a tech startup or remote business.
If an employee is injured and you haven’t enrolled, you are personally liable for all medical costs, disability payments, and potential litigation—without insurance backing.
Premium calculation by industry risk class
Unlike the other three insurances, IAI is not a flat percentage of wages. Premiums are calculated using a risk classification code (업종 코드) assigned to your industry by the Korea Workers’ Compensation and Welfare Service (근로복지공단, also known as KCOMWEL).
General range: Roughly 0.7%–20% of total wages depending on industry, based on the KCOMWEL premium classification table; verify the exact rate for your 업종 코드 before budgeting, as rates are reviewed periodically. An office software company is typically assessed around 0.7%. A construction subcontractor pays multiples of that.
File through KCOMWEL at kcomwel.or.kr within 14 days of hiring your first employee.
Claims process and employer liability
If your employee files a claim, KCOMWEL manages the investigation and payout. Your obligation is to report the incident within 1 month. Failure to report, or failure to have enrolled in the first place, converts KCOMWEL’s payout into a recoverable debt from your business.
Timeline & Checklist: What to Do Before Day 1
Pre-hire documentation and notification windows
Before the employment start date, you need: – Signed employment contract (before you enroll in insurances, nail down your employment contract) – Employee’s resident registration number (주민등록번호) or alien registration number (외국인등록번호) – Your business registration certificate (사업자등록증) – Bank account details for payroll direct deposit
All four insurance registrations share the same 14-day enrollment window from the hire date, though best practice is to file on or before Day 1.
How to register with each insurer
| Insurance | Agency | Portal |
|---|---|---|
| National Pension (국민연금) | National Pension Service (국민연금공단, NPS) | nps.or.kr |
| Employment Insurance | Ministry of Employment and Labor (고용노동부) / HRD Korea | ei.go.kr |
| Health Insurance + Long-Term Care | NHIS (건강보험공단) — LTCI auto-added | nhis.or.kr |
| Industrial Accident | KCOMWEL (근로복지공단) | kcomwel.or.kr |
The unified 4대보험 portal at 4insure.or.kr lets you submit acquisition reports for employment insurance, health insurance, and national pension simultaneously. Industrial accident insurance still requires a separate KCOMWEL filing.
Payroll integration and monthly reporting
Once enrolled, monthly contributions are automatically calculated and billed. Set up auto-debit through each agency’s portal. For more on what to withhold beyond insurance—income tax, resident tax—see what to withhold from employee salary beyond insurances.
Costs at a Glance — Monthly Budget Example
Sample calculation for a 30 million KRW annual salary
Monthly wage: ₩2,500,000
The figures below use rates that were current as of 2024–2025. Contribution rates are reviewed annually—verify the current year’s rates at nhis.or.kr, ei.go.kr, and kcomwel.or.kr before finalizing any payroll budget.
| Insurance | Employee (est.) | Employer (est.) |
|---|---|---|
| National Pension (국민연금) | ₩112,500 (4.5%) | ₩112,500 (4.5%) |
| Employment Insurance | ₩22,500 (0.9%) | ₩28,750 (1.15%) |
| National Health Insurance | ₩88,625 (3.545%) | ₩88,625 (3.545%) |
| ↳ Long-Term Care (LTCI) | ₩11,477 (12.95% of NHI) | ₩11,477 (12.95% of NHI) |
| Industrial Accident | ₩0 | ~₩17,500 (0.7% — office rate) |
| Totals | ~₩235,102 | ~₩258,852 |
Rates above are based on 2024–2025 figures. National Pension ceiling: ₩6,170,000/month (2025)—contributions are capped at that income level. Long-Term Care is billed automatically as part of the NHIS statement, not a separate filing. Verify all current-year rates before finalizing any payroll budget.
Your total employer overhead on a ₩30M salary: roughly ₩3.11M per year in insurance contributions (pension + health + LTCI + employment + industrial accident combined). Actual figures will differ based on your industry code and the current year’s rates.
Regional and industry variations
Contribution rates for NHI and employment insurance are nationally uniform. Industrial accident insurance is the exception—a Busan manufacturing operation and a Seoul software company with identical payrolls will pay very different IAI premiums.
Where to Get Help (and Avoid Bad Advice)
Legitimate Korean government resources in English
- NHIS English portal: nhis.or.kr (select English) — enrollment guides for foreign employers
- Ministry of Employment and Labor (고용노동부) English site: moel.go.kr — employment insurance FAQs and forms
- Korea Labor Institute (KLI, 한국노동연구원): kli.re.kr — policy research on Korean labor law, some English content
- Hi Korea (hikorea.go.kr): one-stop portal for foreign residents, some employer guidance
When to hire an employment law consultant vs. accountant
Hire an accountant for: monthly payroll calculation, tax withholding, year-end settlement (연말정산), and annual reporting.
Hire an employment law consultant (노무사) for: initial insurance enrollment if you’re uncertain, employment contract review, handling employee disputes, and any situation involving termination.
The 노무사 (certified labor and social security consultant) license is a Korean-specific credential. These practitioners specialize in exactly this compliance area and charge less than full attorneys for routine enrollment work.
Frequently Asked Questions
Do I have to register all 4 insurances before hiring, or can I do it after?
Technically, Korean law gives you up to 14 days from the hire date to file enrollment. In practice, filing before or on Day 1 is safer. Health insurance is billed from the first day of employment, not the enrollment date—delay just means you owe retroactively. Industrial accident insurance matters most on Day 1 because injuries don’t wait for paperwork. File everything before your employee starts, or at latest the same day.
Can a foreign company hire a Korean contractor instead of an employee to avoid insurances?
You can hire a contractor, but Korean labor law determines worker status based on the substance of the relationship, not the label on the contract. If your contractor has set hours, takes direction on how to work (not just what to deliver), uses your tools, and works exclusively for you—a labor authority will likely classify that as employment. The penalty for misclassification includes retroactive insurance contributions from the original start date, back wages for any statutory benefits owed, and potential fines. Don’t use contractor agreements as insurance avoidance.
If I hire a Korean remote worker in Seoul, do I still pay into all 4 insurances?
Yes. Location is irrelevant. What triggers the four-insurance obligation is the employment relationship—a signed employment contract, direction and control, and regular compensation. A developer working from a Mapo-gu apartment for your company incorporated in Delaware still requires all four Korean insurance enrollments from their first day of work. The legal exposure is the same as for any office-based employee.
Which insurance covers maternity leave or sick leave in Korea?
Both employment insurance and health insurance contribute, but they cover different things. Employment insurance funds the maternity leave wage subsidy (출산전후휴가급여) paid to the employee for 90 days, partially covered by the government. National health insurance covers medical costs during pregnancy and delivery. Paternity leave (배우자 출산휴가) also draws from employment insurance. Ordinary sick leave is not a statutory paid benefit in Korea—it depends on your employment contract terms, not insurance payouts.
Can I include insurance costs in an employee’s salary deduction, or do I pay separately?
You collect the employee’s share via payroll deduction—it comes out of their gross salary before they receive it. You pay the employer’s share separately from your own business funds. You cannot shift your employer-side contributions onto the employee or build them into the salary structure as a deduction. The employee and employer portions are separate obligations. What you can do is factor your employer contributions into your total compensation budget when setting salary—but the statutory split must be honored.
What to Do Next
Pull up the 4insure.or.kr unified portal today and set up your employer account before your hire date arrives. Walk through the acquisition report for national pension, employment insurance, and health insurance first—those three can be filed simultaneously through the unified portal. File the KCOMWEL industrial accident enrollment separately at kcomwel.or.kr.
For the contract that needs to exist before any of this applies, start with our sister guide: before you enroll in insurances, nail down your employment contract.
Disclaimer: This post reflects the author’s experience and publicly available information as of 2026. It is general information, not legal, tax, or immigration advice. Rules and rates change — verify current details with the relevant authority (NPS, NTS, MOJ) or a licensed professional before acting.
