Labor & Contracts · 🇰🇷 Korea
Fixed-Wage Contract Validator (Korea)
Check if your fixed-wage employment contract is legally valid under Korean labor law. Auto-compute shortfall and generate a certified notice.
About this tool
Fixed-Wage Contract Validator (포괄임금제 체크) checks whether your Korean fixed-wage employment contract is legally valid in light of the 2024 Supreme Court ruling (2020Da270503). Enter your base pay, fixed overtime, fixed night-shift, and fixed holiday allowances, and the tool computes the shortfall against actual hours worked. It then drafts a Korean certified mail (내용증명) you can download as a PDF and send to demand back-pay. Useful for IT, design, R&D, and logistics roles where employers often justify uncompensated overtime by saying "your fixed-wage covers everything." All calculations run in your browser; no salary or company data leaves your device.
Use cases
Scenario 1
Software engineer missed overtime
A backend engineer doing 30h/month overtime is told "everything is covered." Compute the shortfall vs. actual hours at 1.5× and produce evidence for a back-pay claim.
Scenario 2
Design agency weekend work
For weekend work in a design agency, automatically apply the 1.5× or 2× holiday surcharge and surface unpaid holiday allowances in under a minute.
Scenario 3
R&D night shift
For R&D shifts between 22:00–06:00 in pharma/semiconductor labs, separately credit the 0.5× night-shift surcharge above the fixed-wage cap.
Scenario 4
Logistics & call-center shifts
For rotating shifts blending holiday and night premiums, compute composite surcharges and prepare evidence for labor-board complaints or civil action when the shortfall is large.
Scenario 5
Final review before resignation
Before resigning, run a 3-year audit of past payslips, total any unpaid allowances, and self-assess whether sending a certified notice now is the right move.
Features
- Validity check based on the 2024 Korean Supreme Court ruling (2020Da270503)
- Auto-applied surcharges (1.5×/0.5×/1.5–2×) for overtime, night, and holiday work
- Side-by-side actual hours vs. fixed-wage cap with shortfall computation
- Auto-drafted Korean certified-notice (내용증명) PDF for back-pay claims
- In-browser only — salary and company name never leave your device
- Bilingual KR/EN UI with mobile-optimized layout
- Printable / email-shareable results to bring to a labor attorney
Frequently asked
- Q. Are all fixed-wage contracts invalid?
- A. No. They can be valid for hard-to-measure roles when the worker is not disadvantaged. The 2024 Supreme Court held, however, that any shortfall above the fixed-wage cap must be paid separately — and this tool focuses on computing that shortfall.
- Q. Can I send the result directly to my employer?
- A. The drafted certified notice can be sent via Korea Post’s electronic certified-mail service or printed and mailed. Review the amount and cited provisions once more, and consult a labor attorney for high-stakes cases.
- Q. Is my salary data safe?
- A. All computation happens locally in your browser. No salary, hours, or employer information is ever sent to a server. Closing the tab clears the inputs.
- Q. Can I file a labor-board complaint right away?
- A. If the employer ignores the certified notice, you can file a wage-arrears complaint with the Ministry of Employment & Labor or pursue a civil payment-order petition. The tool’s output can be attached as evidence.
- Q. Does it cover unused annual-leave pay?
- A. The current version focuses on overtime, night, and holiday surcharges. For unused-annual-leave or severance, pair it with the Korean Payslip Generator tool.
Sources / references
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How we run it / disclaimer
This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.