1. A Dream Job and a Questionable Paycheck

Mirae Kim, a fresh design graduate, was thrilled to land a junior marketing designer role at Alpha Tech, a mid-sized IT firm. During the orientation, the HR manager explained that while she signed a two-year contract, she would undergo a six-month probation period. "Since you're still learning the ropes, you'll receive 90% of the minimum wage for the duration of your probation," the manager noted. Mirae, caught up in the excitement of her first job, readily agreed.

However, four months into her role, Mirae realized something was off. While she was now handling independent projects, her paycheck remained below the legal minimum wage. When she questioned the HR department, the response was firm: "Your contract specifies a six-month probation. Our company policy is to apply the 90% rate for the entire six months." Mirae wondered if she was legally bound by this agreement, or if her rights were being violated.

2. The Core Legal Question

The central issue in this case is: "What is the maximum legal duration for which an employer can pay a reduced minimum wage to a probationary worker?" Specifically, if a company sets a probation period longer than three months, can they extend the pay cut accordingly?

3. What Korean Law Says

The Korean Minimum Wage Act is designed to ensure the basic livelihood of workers. While it allows for a slight reduction for trainees, it sets very strict boundaries to prevent exploitation.

Minimum Wage Act, Article 5(2) and Enforcement Decree Article 3For workers in a probationary period who have been employed for less than 3 months, the hourly minimum wage may be reduced by 10% from the standard hourly minimum wage rate.

To apply this reduction, several conditions must be met:

  • Contract Duration: The labor contract must be for a term of at least one year.
  • Reduction Limit: The pay cannot be lower than 90% of the statutory minimum wage.
  • Time Limit: The reduction can only be applied for the first 3 months, regardless of how long the actual probation period is.
  • Job Category Exception: Workers in "simple labor" positions (e.g., loading workers, delivery personnel, or cleaners) must receive 100% of the minimum wage from the start, with no reduction allowed.

4. How Korean Courts Approach This

Korean courts and the Ministry of Employment and Labor interpret these reduction clauses strictly. Because the Minimum Wage Act is a mandatory law designed for social protection, its exceptions cannot be expanded by private agreements between an employer and an employee. Even if a worker signs a contract agreeing to a 90% wage for six months, the court views the portion of the agreement exceeding the three-month legal limit as null and void. Employers who fail to pay the full minimum wage after the three-month mark can face criminal penalties for wage arrears.

5. Applying the Law to Mirae’s Case

Let’s analyze Mirae Kim’s situation step-by-step:

  1. Contract Requirement: Since Mirae signed a two-year contract, the employer met the first requirement for applying a probationary reduction (a contract of one year or more).
  2. Probation Duration vs. Pay Duration: It is perfectly legal for Alpha Tech to set a six-month probation period for performance evaluation. However, the financial penalty of that probation is legally capped.
  3. The Three-Month Cap: Under the Minimum Wage Act, Alpha Tech was only permitted to pay Mirae 90% of the minimum wage for the first three months.
  4. The Result: From the fourth month onwards, despite still being on "probation" according to her contract, Mirae is legally entitled to 100% of the minimum wage (or her contracted salary, whichever is higher).

6. Conclusion: What Happened, and What Should You Do?

Armed with the facts, Mirae Kim revisited the HR department. She presented the guidelines from the Ministry of Employment and Labor, politely pointing out that the pay reduction should have ended after her third month. Realizing their policy was in direct violation of the law, the company corrected her salary and provided back pay for the fourth month. Mirae successfully completed her probation with the respect and compensation she deserved.

If you find yourself in a similar situation, keep these two tips in mind:

  • Check your contract length immediately. If your contract is for less than one year (e.g., a 6-month or 10-month contract), any reduction in minimum wage is illegal from day one.
  • Monitor the calendar. The 10% reduction is a temporary measure that expires exactly three months after your start date. Keep your pay stubs and ensure your wage returns to the full amount starting from the fourth month.

Your labor has value, and the law is there to ensure that value is recognized fairly. Don't hesitate to speak up for your rights.

This column provides general legal information and does not constitute professional legal advice for specific cases.