Non-compete clauses appear in Korean employment contracts as a matter of routine — in hagwon contracts, in technology company offers, in the standard forms handed to a foreign hire on the first morning. They are usually signed without negotiation and read for the first time on the day someone resigns.
Two questions then arrive together, and they have different answers. Whether the clause restricting your next job is enforceable. And whether, quite apart from that clause, you are carrying something out of the building that the law protects.
→The Clause Is Neither Void Nor Automatic
Korean law does not treat a non-compete agreement (경업금지약정) as void in principle. Nor does it enforce one merely because it was signed. Freedom to choose an occupation is constitutionally protected, and a restriction on it is upheld only so far as it is reasonable.
Courts assess a settled set of factors, and they are weighed together rather than checked off:
- A protectable interest of the employer. A genuine trade secret or comparable know-how — not general skill, industry knowledge, or client relationships the employee built personally
- The employee's position before leaving. A senior engineer with access to core technology is treated very differently from a general staff member or a junior instructor
- Duration. Measured against how long the information stays commercially valuable, not against what the contract asserts
- Geographic and occupational scope. A restriction covering an entire industry nationwide is treated far more sceptically than one aimed at named competitors
- Consideration. Whether anything was given in exchange for the restriction — a payment, an allowance, a promotion, compensation for the restricted period
- The circumstances of departure. A dismissal, or a resignation forced by unpaid wages, weighs against the employer relying on the clause
Consideration deserves emphasis because it is where foreign employees are usually strongest. Where a clause was inserted into a standard contract, nothing was paid for it, and the employee held no position of real access, enforcement is a difficult case for the employer to bring.
What you learned is yours. What you took is not. The line between general skill and a protected trade secret is where these cases are actually decided.
→The Injunction Comes First
The practical danger is not a damages claim years later. It is an application for a provisional injunction prohibiting employment (전직금지 가처분), which is heard on an expedited basis and can be decided before anyone has argued the merits properly.
If granted, it does what the employer wants: the new job cannot start. A new employer that has been served with the application frequently withdraws the offer regardless of how the case eventually ends. Damages after the fact are no remedy for that.
What this means in practice is that the response window is short, and silence is the worst option. A carefully framed reply — what you did and did not take, what your actual role was, what the new position involves — resolves a meaningful share of these disputes before an application is ever filed.
→Confidentiality Is a Separate, Harder Problem
A confidentiality obligation is not the same thing as a non-compete, and it does not depend on the non-compete surviving. Trade secrets are protected by the Unfair Competition Prevention and Trade Secret Protection Act (부정경쟁방지 및 영업비밀보호에 관한 법률), which provides both civil remedies and criminal liability.
The criminal exposure is real and, in the most serious cases, severe — disclosure abroad is punished more heavily than domestic disclosure. This is the part of the problem that does not go away by negotiating with the former employer, because it does not depend only on them.
- Do not copy files, source code, client lists, pricing tables, or drawings to personal storage — not to a personal drive, not to personal email, not to a messaging app, not "as a backup"
- Return company devices and accounts through a documented handover, and keep the record of it
- Forensic examination of company laptops after a departure is routine, and mass copying in the final weeks is the single most damaging fact in these cases
- Note that information can qualify for protection only where the employer actually kept it confidential — access controls, marking, restricted distribution. Information circulated freely inside the company is a weaker claim
→The Penalty Figure in the Contract
Many contracts state a fixed sum payable on breach — a number chosen to deter rather than to compensate. Employees assume it is what they will owe. Often it is not.
The Labor Standards Act (근로기준법) prohibits an employment contract that fixes in advance a penalty or predetermined damages for breach. A clause that operates as a penalty on the employee is, to that extent, unenforceable. Beyond that, a court may reduce an agreed sum it finds unreasonably excessive.
Two clauses commonly attached to the same page are worth separating out. A promise to repay training or relocation costs on early departure may be treated differently from a pure penalty, depending on how it is structured and what the employee actually received. And for a foreign employee, a clause purporting to condition visa sponsorship or the release needed to change workplace on waiving a claim has no proper basis — sponsorship is not a private bargaining chip.
→If You Are the One Leaving
- Read the clause before you resign, not after. Duration, scope, named competitors, and whether anything was paid for it
- Leave clean. No copying, no forwarding, a documented return of devices and accounts
- Tell the new employer the position accurately. Concealing a restriction and having it surface later is worse than disclosing it at the offer stage
- Answer any letter promptly and in writing, in terms that do not concede facts you have not checked
- Where a sponsored visa is involved, settle the sequence — resignation, workplace change permit (사업장 변경허가) or change of status, and start date — before the dispute constrains it. An injunction that stops you working can put a work-based status at risk, and that is the outcome to plan around