Legal Q&A · Employment Law & HR

Is a post-employment non-compete clause valid, and must compensation be paid?

Law as at 21 July 2026

Short answer

Yes, but under strict conditions. A post-employment restriction may be agreed for a maximum of one year and only with an employee who could have acquired sensitive knowledge. The employer must pay at least 50% of average monthly earnings for each restricted month; without compensation, the clause is invalid. Any contractual penalty must not exceed the total compensation.

When is the clause valid?

Section 83a of the Labour Code governs restrictions on gainful activity after employment ends. Several conditions must be met together:

  • the restriction lasts no more than one year after employment ends (paragraph 1);
  • it may be agreed only with an employee who had the opportunity to acquire information or knowledge not commonly available, whose use could cause substantial harm to the employer (paragraph 2);
  • the employer must provide reasonable monetary compensation of at least 50% of average monthly earnings for each month of compliance (paragraph 4); this is a condition of validity, so an “unpaid” clause is invalid;
  • it must form part of the employment contract, otherwise it is invalid (paragraph 8).

If the restriction exceeds what is necessary to protect the employer, the court may limit or cancel it (paragraph 3).

What contractual penalty can be agreed?

A contractual penalty may be agreed for breach, but it must not exceed the total compensation under paragraph 4, and payment extinguishes the obligation (Section 83a(5)). The employer may withdraw from the clause only while employment continues (paragraph 6); the employee may terminate it by notice if compensation has not been paid within 15 days after it falls due (paragraph 7).

Distinguish this from competition during employment

Competitive activity during employment is different: under Section 83, the employee may undertake it only with the employer’s prior written consent. If the employer does not respond within 15 days, consent is deemed granted.

We structure non-compete clauses to be enforceable and proportionate through our non-compete clause service, as part of employment contracts and documentation, linked to internal regulations and policies protecting know-how.

This answer provides general information on the law as at 21 July 2026. It does not constitute legal services or replace an assessment of an individual case. The details of your situation may differ. Book a consultation to discuss them.

More legal questions

All questions and answers
  1. When may an employer terminate employment immediately? An employer may terminate employment immediately only exceptionally: where the employee has been finally convicted of an intentional criminal offence or seriously breached work discipline. It must act within two months of learning of the grounds and no later than one year after they arose. Protected employees, such as those on maternity or parental leave, cannot be dismissed immediately.
  2. What limits apply to work agreements outside an employment relationship? The Labour Code recognises three agreements outside an employment relationship. An agreement to perform a task is limited to 350 hours per calendar year, a work activity agreement to no more than 10 hours per week, and a student temporary work agreement to an average of 20 hours per week. Each must be in writing or is invalid. Ordinary agreements may be concluded for a maximum of 12 months; a special work activity agreement for seasonal work is limited to 520 hours per calendar year and may last no more than 8 months.
  3. Can my wife or son help in the business without an employment contract? Yes, but only within a narrow exception. A direct-line relative, sibling or spouse may help an individual entrepreneur or a family s.r.o. with no more than two related members without a contract. The helper must also have pension insurance, receive a pension, or be a pupil or student under 26. Outside these conditions, the work is illegal employment carrying a fine from EUR 4,000.
  4. We registered an employee with the Social Insurance Agency late. Is this illegal employment? Not necessarily. Illegal employment arises only if you fail to register the employee within seven days after the deadline; registration before an inspection starts protects the company from this consequence. If the inspection precedes registration, the inspectorate must impose a fine. The delay itself may attract a less severe Social Insurance Agency fine.

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Mgr. Patrik Tulinský, LL.M. Czech and Slovak attorney · SAK 300422 · ČAK 19654

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