Annual-Salary Letter vs. Labor Contract — Differences & Drafting Guide (2026)

Why this distinction matters

Whether you are a new hire or a mid-career professional, one of the most common phrases you hear in Korea is "please sign your annual salary letter." And the question most people forget to ask in that moment is, "Will I also receive a separate labor contract?" The two documents sound similar, but their legal weight is completely different. The labor contract is mandated by Article 17 of the Labor Standards Act (LSA), while the salary letter is merely an attachment that updates your wage figure. If you walk away with only the salary letter, the entire skeleton of your employment rights is missing.

This guide explains, as of May 2026, the difference between the two documents, the eleven items that the LSA requires in a labor contract, the five clauses most frequently omitted in real-world contracts, a five-minute pre-sign checklist, and the escalation path if your employer refuses or delays issuing a proper labor contract. The examples are drawn from how Korean small-and-medium businesses (SMBs) of fewer than 50 employees typically handle hiring paperwork.

A salary letter is NOT a labor contract

The most common misunderstanding — "I got a salary letter, so I got a labor contract, right?" Wrong.

The salary letter is just an attachment that updates the wage. The labor contract must be a separate document, and the two should be filed and stored separately. Even if your employer says "everything is already in the salary letter," that document only counts as a labor contract if it fully covers the eleven items listed in LSA Article 17.

Mandatory 11 items (LSA §17)

The following items must appear in a labor contract. Any omission can expose the employer to a fine.

1. Wage composition, calculation, and payment method — base pay / fixed allowances / variable allowances
2. Standard working hours — 40 hrs/week, 8 hrs/day
3. Holidays and annual paid leave — weekly rest, public holidays, annual leave rules
4. Workplace and job duties — head office / branch / remote, with specifics
5. Contract term — fixed term or open-ended
6. Pay date — exact monthly payday
7. Workdays and hours per day — part-time workers only
8. Social-insurance application — coverage under the four major insurances
9. Fixed allowances — meal, transport, with non-taxable cap noted
10. Probation period — duration and wage rate if any
11. Confidentiality / non-compete — optional, but enforceable once written

The Ministry of Employment and Labor distributes a standard labor-contract template (downloadable at www.moel.go.kr). Even if your employer uses a custom template, it is your responsibility to confirm none of the eleven items is missing.

5 frequently-omitted clauses

These are the clauses most often left out or worded ambiguously in real Korean SMB contracts.

• Inclusive-wage items and hours — A line like "overtime is included in monthly pay" only holds up if the specific overtime hours and the corresponding amount are written out. Korean Supreme Court precedent (2010다91046) recognizes inclusive wages only when work hours are genuinely hard to measure. For office workers, developers, and salespeople with clear start/end times, courts often invalidate vague inclusive-wage clauses.
• Probation wage rate — For contracts shorter than one year, 100% must be paid even during probation. The 90% reduction is allowed only when the total contract is at least one year. A clause like "80% during 3-month probation" in a one-year contract is unlawful.
• Separate severance line — "Severance included in salary" is void. The Severance Pay Act requires severance to be calculated separately and either paid at retirement or accumulated in a Retirement Pension (DC/DB/IRP). Splitting severance into your monthly paycheck creates a refund risk for the employer later.
• Workplace-change clause — Without it, the employer cannot unilaterally transfer you. The flip side: signing a broad clause like "the employer may assign work at any location nationwide" weakens your ability to refuse remote relocation. Try to narrow the scope.
• Annual-leave promotion procedure — If the employer does not issue the required written notices in July and October to remind unused leave, the leftover days must be paid out as wages. Don't trust verbal claims that "leave expires automatically."

5-minute pre-sign checklist

Whether you receive a paper copy or a PDF, run through the following five checks before signing.

1. Are all eleven mandatory items present?
2. If the contract uses inclusive wages, are the overtime hours and amounts separated?
3. Does the probation rate drop below 100% in a contract shorter than one year?
4. Is severance a separate line item, not "included in salary"?
5. Do the workplace and job description match what you were told during interviews?

The Labor-Contract Self-Check auto-flags the eleven items plus the five missing clauses. One red flag = pause and renegotiate before signing. Once signed, asking the employer to add missing items requires their goodwill — and that often disappears.

Inclusive-wage trap

The "annual salary ₩48M (inclusive)" structure that many startups and SMBs use claims to bundle overtime, night, and holiday allowances into base pay. The problem: if the embedded overtime hours are not spelled out, you lose the basis to claim the difference when you work more than that hidden amount.

Supreme Court 2010다91046: inclusive wage is only valid when measuring work hours is genuinely difficult. For desk-based roles with regular hours, simply labeling a contract "inclusive" does not validate it.

Practical tip: when you see an inclusive-wage contract, look for a phrase such as "includes ₩○○ overtime hours per month; excess is calculated separately." If missing, request that the clause be added before signing.

When you only get a salary letter — escalation path

If your employer keeps trying to substitute a labor contract with a salary letter, here is the step-by-step response.

1. Request in writing or email — A simple "Per LSA Article 17, please issue a separate labor contract" is enough. Use email so there is a paper trail.
2. If repeatedly refused, file a complaint — Call the Ministry of Employment and Labor hotline at 1350 or visit the nearest Regional Labor Office.
3. Penalty for non-issuance — The employer can be fined up to ₩5 million under LSA Article 17.
4. You can claim while still employed — You don't have to quit first. You can also claim back-pay (invalid inclusive wage, unused leave) within a five-year statute.

Digital signatures and electronic contracts

Since 2024, the Ministry has explicitly recognized electronic labor contracts (email, e-signature, HR systems) provided they meet the following conditions.

• Authentication that proves the worker reviewed and consented (joint certificate, mobile authentication)
• A form the worker can download and review at any time
• All eleven mandatory items included

A PDF sent by email and confirmed only by reply is risky — it is hard to prove consent if a dispute arises. If your company uses an HR platform (e.g., Saramin HR, JobKorea HR), back up the login record + signing timestamp + signed PDF to your personal cloud.

FAQ

• Q. Is "90% probation pay for 6 months" lawful? → Yes if total contract is one year or more. Otherwise, 100% must be paid.
• Q. Is "severance included in salary" valid? → No. Severance must be calculated and paid separately, and any pre-paid portion may become a refund claim.
• Q. I received the contract a week after starting — too late? → The LSA requires issuance "at the start of work." Late issuance is allowed, but indefinite delay triggers the fine.
• Q. Does this apply to workplaces with fewer than 5 employees? → Yes. LSA Article 17 applies regardless of headcount, though some other provisions (annual leave, overtime premium) do not apply.
• Q. My contract says "freelancer" but I work fixed hours like a regular employee. → If your "worker status" is recognized — based on supervision, work direction, pay structure — Korean courts treat the relationship as employment regardless of the contract title.

Related tools

• Labor-Contract Self-Check — auto-flags the 11 items + missing clauses
• Inclusive-Wage Self-Check — compare your stated overtime hours to your actual hours
• Year-End Tax Simulator — compute net pay from your salary letter's wage mix
• Labor Standards Act Quick Reference — confirm what applies in workplaces under 5 employees

Bottom line

Keep the labor contract and salary letter as separate documents. The labor contract is the skeleton of your rights; the salary letter is just an annual wage update. If anything is missing, renegotiate before signing — your leverage falls sharply once you've signed. Three quick checks during every annual review go a long way: does my contract still include all eleven items, are the inclusive-wage hours spelled out, and is severance still a separate line?

Korean labor law is amended in pieces every year. This article is current as of May 2026; for specific disputes, contact the Ministry of Employment and Labor hotline (1350) or a certified labor attorney (공인노무사).