South KoreaA wage peak system was applied to me. Is this unfair.
A wage peak system is not automatically unfair in South Korea, but it must comply with the Labor Standards Act and collective agreements — otherwise it may be invalid.
What the Law Says
South Korean law permits wage peak systems only if they meet strict statutory conditions — especially regarding fairness, notice, and proportionality.
A wage peak system lowers wages for older workers (typically aged 55–60) as part of a broader retirement or seniority-based compensation structure. It is not banned outright, but its legality depends on compliance with the Labor Standards Act (LSA) and related enforcement rules.
Under the LSA, any wage reduction — including through a peak system — must not violate the principle of equal pay for equal work (s. 6), must be based on objective, reasonable criteria (s. 4), and must not reduce wages below the minimum wage (s. 42).
The Ministry of Employment and Labor’s Enforcement Decree clarifies that wage reductions under peak systems must be limited to no more than 15% of base wage and require at least 30 days’ prior notice to affected employees. Also, the system must apply only after an employee has completed at least 30 years of continuous service — unless justified by collective agreement or individual consent.
Statutory TextNo employer shall discriminate against employees in wages, working hours or other working conditions on grounds of gender, nationality, religion or social status.
— Labor Standards Act, s. 6 — Equal Treatment
Statutory TextAn employer who intends to change working conditions stipulated in employment rules shall give notice to employees at least thirty days prior to the change.
— Labor Standards Act, s. 97 — Notice of Change to Employment Rules
Statutory TextWages shall not be lower than the minimum wage determined under the Minimum Wage Act.
— Labor Standards Act, s. 42 — Wage Payment
What to Do
Review your employment rules and collective agreement (if any) to confirm whether the wage peak system was properly notified and justified.
Check whether your wage reduction exceeds 15% or applies before 30 years of service — if so, it may violate the LSA.
File a complaint with the local Labor Office (Ministry of Employment and Labor) within 2 years of the violation.
Request written explanation from your employer about the legal basis and calculation method used for the wage peak adjustment.
Sources
Not legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.