Inclusive-wage is the exception, not the rule
Korea's Labor Standards Act requires separate, premium pay for overtime (over 8 hours/day or 40 hours/week), night work (22:00–06:00 the next day), and holiday work. Each premium is at least 50% of the ordinary hourly wage, and they stack when overlapping. The so-called "inclusive-wage" arrangement — where overtime, night, and holiday premiums are pre-bundled into a flat annual salary — is an exception recognized only by Supreme Court precedent (2010Da91046 and its line of follow-ups), not the rule.
Yet across IT, design, marketing, and startup roles, new hires and experienced staff keep getting handed inclusive-wage contracts. Read together, Ministry of Employment and Labor (MOEL) Administrative Interpretation No. 17 (2025) and the recent line of court decisions point the same direction: for office roles with clear attendance tracking, the inclusive-wage contract is very likely void. This guide gives you a 5-minute self-check on whether your contract qualifies, and shows how to calculate and recover unpaid wages if it doesn't. This is general information — please consult a labor attorney for specific cases.
The five legality requirements from Supreme Court precedent
Reading 2010Da91046 together with subsequent decisions, an inclusive-wage contract must satisfy all five of these.
- Work hours must be objectively hard to measure.
Limited to field, remote, or itinerant roles. General office roles with attendance systems (fingerprint, card, app) don't pass this requirement.
- Must not disadvantage the worker.
The legally-correct sum of overtime, night, and holiday premiums must be ≤ the inclusive amount. If the inclusive amount falls short, the difference is owed.
- Items and amounts must be itemized in writing.
A contract saying only "salary includes overtime" doesn't cut it. You need explicit breakdowns — how many overtime hours, what amount, how many night hours.
- Must not conflict with company rules or collective agreements.
If the employee handbook sets a separate premium structure but the contract is purely inclusive, the conflict raises invalidity risk.
- Reconciliation must actually happen.
When actual overtime exceeds the bundled hours in a given month, the difference must be paid separately. Missing reconciliation breaks requirement 5, regardless of monthly, quarterly, or annual cadence.
MOEL Administrative Interpretation No. 17 (2025) explicitly held that "inclusive-wage contracts for office workers whose hours are measurable through an attendance system fail requirement 1 and lack legal effect." This directly applies to most IT, design, and admin roles.
5-minute self-check — count the risk and void flags
Run your contract through this table.
| Question | Yes | No |
|---|---|---|
| Does the company track arrival/leave via attendance system or access card? | Legality risk (req 1 ↓) | OK |
| Are inclusive items, hours, and amounts itemized in the contract? | OK | Likely void (req 3 ↓) |
| Is average actual overtime ≤ bundled hours? | OK | Can claim difference (req 2 ↓) |
| Does the contract or handbook include a reconciliation clause? | OK | Violation (req 5 ↓) |
| Does the employee handbook mention inclusive-wage? | OK | Likely void (req 4 ↓) |
| Has the company ever actually reconciled overtime? | OK | Violation strengthened (req 5 ↓) |
If 2+ rows fall in the risk/void column, your inclusive-wage contract may be invalid. 3+ rows makes it very likely invalid, and you should seriously consider calculating and recovering unpaid wages.
Calculating unpaid wages — start with ordinary hourly wage
Use the Working-Hours & Overtime Calculator or work through it yourself.
1. Ordinary hourly wage
```
hourly wage = monthly ordinary wage / 209 hours
```
- Monthly ordinary wage = base + regular, uniform, and fixed allowances (some meal / transportation stipends, job-title allowances, fixed bonuses).
- 209 hours = (40 weekly + 8 weekend rest) × 52 / 12.
Performance bonuses, sales incentives, and reimbursed meal expenses are often excluded from ordinary wage. Check each line item on your pay stub.
2. Premium rates by category
| Type | Hours | Premium |
|---|---|---|
| Overtime | Beyond 8/day or 40/week | +50% (1.5×) |
| Night | 22:00–06:00 | +50% |
| Holiday (within 8 hours) | Statutory or contractual holiday | +50% |
| Holiday (over 8 hours) | Additional overtime on holiday | +100% (2×) |
Night + overtime + holiday stack. Example: post-22:00 work on a holiday = holiday premium (50%) + night premium (50%) + overtime premium (50%) = ordinary hourly × 2.5.
3. Statute of limitations is 3 years
Wage claims expire in 3 years. You can recover up to 36 months back from today — older periods are forfeited. If the self-check flags unpaid wages, move without delay.
Worked example
Setup: monthly ordinary wage KRW 3.5M, hourly ≈ KRW 16,750. Contract bundles 30 hours of monthly overtime. Actual average overtime: 45 hours/month.
- Legal overtime owed: 45 × 16,750 × 1.5 = ~KRW 1,130,625
- Inclusive-bundled overtime: 30 × 16,750 × 1.5 = ~KRW 753,750
- Monthly gap: ~KRW 376,875
- 36-month accumulated: ~KRW 13,567,500
Add night and holiday components and total claims often exceed KRW 20M.
Filing process — taking it to the Labor Office
Once you've confirmed unpaid wages, here's the path.
1. Gather evidence
- Time records: attendance-system screenshots, access-card logs (the Labor Office can order the employer to produce them).
- Messages and emails: directives to work late or on holidays, timestamped task handoffs.
- Pay stubs: last 36 months.
- Contract and handbook: copy of inclusive-wage clauses.
2. File a claim
- Submit via MOEL civil-affairs portal (minwon.moel.go.kr) or call the 1350 hotline.
- File a wage-non-payment claim with the local Labor Office. By mail, in person, or online.
- You'll attend a hearing, and the employer will too — both sides present their case.
3. Investigation → corrective order → criminal referral
- The Labor Office investigates within 25 days, extendable for complex cases.
- If unpaid wages are confirmed, a corrective order issues. If the employer doesn't comply within 7 days, the case proceeds to criminal prosecution (up to 3 years imprisonment or KRW 30M fine).
- In parallel, you can file a civil suit for the unpaid amount plus default interest (20% APR).
You can file during employment. If the employer retaliates (denied promotion, ostracism, dismissal), file a separate unfair-labor-practice claim. The Labor Standards Act mandates payment within 14 days of departure, and violations are criminal — so right after departure is often the safest filing window.
Frequently asked questions
Q1. Is a contract that just says "inclusive wage" legal?
No. Items, hours, and amounts must be separately itemized to satisfy requirement 3. A bare "inclusive" label raises invalidity risk.
Q2. The company has never reconciled overtime. What does that mean?
Strongly suggests requirement 5 isn't met, making invalidity highly likely. If void, the contract reverts to the standard wage structure and you can recover the full difference.
Q3. What changes if my inclusive-wage clause is ruled void?
The annual contract itself remains valid, but the bundling agreement loses effect — premium pay becomes separately due. Full unpaid amounts within 3 years are recoverable.
Q4. I'm worried about retaliation.
Article 104 of the Labor Standards Act prohibits retaliatory disadvantage. If you face unfair dismissal or transfer, you can file a remedy claim with the Labor Relations Commission (within 3 months of dismissal) or sue separately for damages.
Q5. Is negotiating with my employer better than filing?
If unpaid amounts are clear, negotiation can be faster. Always get a written settlement, and carefully review any clause that says "no future claims" — those bind you going forward. If negotiation falls through, you can still file.
Related tools
- Working-Hours & Overtime Calculator — ordinary hourly wage + premium auto-calculation
- Labor-Contract Self-Check — flag missing inclusive items and reconciliation clauses
- Annual-Leave Auto Calculator — recover unpaid leave pay
- Inclusive-Wage Invalidity Self-Check — automated check against the five requirements
Bottom line
Inclusive-wage contracts are an exception reserved for roles where hours genuinely can't be measured — not a default for office jobs with clear attendance tracking. Run the 5-minute self-check on your own contract, and if invalidity is likely, calculate and claim unpaid wages within the 3-year limit. This article reflects May 2026 readings of the Labor Standards Act, Supreme Court precedent, and MOEL administrative interpretations — for specific cases, please consult a labor attorney or licensed labor advisor. Filing with the Labor Office is free, and the 1350 hotline can walk you through the procedure.