Does a termination have to be in writing in Switzerland?
Yes. Under Swiss law (Code of Obligations, Article 337c), every termination of an employment contract must be issued in writing to be valid. An oral termination has no legal effect. The employer must deliver the written notice to the employee's address or hand it to them directly.
Termination in Switzerland is not casual. The law is clear: written form is mandatory. This applies whether you are ending a 3-month trial period, a part-time 20% Pensum role, or a 15-year permanent position. Without a written document dated and signed, the termination does not legally exist.
The written requirement protects both parties by creating evidence of when notice was given and what was communicated. It prevents disputes about whether termination actually occurred.
When termination comes up
Termination arises when you decide to end an employment relationship—whether for business reasons, performance, restructuring, or at the employee's request. It also occurs when a fixed-term contract expires (though renewal silence does not auto-terminate). In most Swiss cantons, ordinary termination carries notice periods of 10 days to 1 month for probation, and 10 days per party thereafter.
Special situations require extra care: termination during protected leave (maternity, military service), termination of workers with a Disability Insurance (IV) status, or mass layoffs triggering redundancy consultation rules. Each canton and industry (GAV) may impose stricter notice periods.
- Probation termination: usually 10 days' notice (check your employment contract)
- Ordinary termination after probation: 10 days minimum notice per party in most cantons
- End of fixed-term contract: no notice needed unless contract says otherwise
- Trial period termination: written form required, even if very brief
- Termination for cause: written form required; must state grounds clearly
- Termination during protected periods: may be forbidden by law or GAV
Your obligation: the written termination
You must issue a written, dated, and signed termination notice. Email counts as writing. Handing the letter directly to the employee, sending it by post, or registered mail all satisfy the requirement. What matters: the employee receives it, or it is clearly addressed to them at their known address.
The notice must state the termination date. It should be clear, unambiguous, and respect the notice period required by contract, canton law, or GAV. If you employ a worker subject to an industry collective agreement (GAV), that agreement may require notice periods longer than the legal minimum—you must follow it.
- Use clear language: 'I hereby terminate your employment contract effective [date]'
- Include the notice period end date; do not leave it vague
- Sign and date the document personally or on behalf of the company
- Keep a copy for your files with proof of delivery (email read receipt, post tracking, or witness)
- If a GAV applies, verify its notice periods before sending notice
- Do not include reasons in the letter unless you are terminating for cause
The single most common mistake
Employers often assume an oral conversation—'We're letting you go'—counts as termination. It does not. Only written notice is valid. Weeks later, when the employee insists they were never properly terminated, you have no proof and no legal standing.
A second mistake: failing to respect notice periods. Sending a termination for 'immediate effect' or 'effective today' violates the law unless cause exists. This can expose you to claims for damages. Always calculate the notice period correctly and state a lawful end date.
- Oral termination in a meeting or phone call: invalid. Write it down.
- 'Effective immediately' without cause: illegal and costly
- Forgetting to check the employment contract for custom notice periods
- Ignoring GAV rules that require longer notice than the law
- No written record of delivery: proves nothing in a dispute
- Terminating during protected leave without legal basis: opens liability
Frequently asked questions
- Is an email termination valid?
- Yes. Swiss law does not demand paper. Email from an official company account, dated and signed (even digitally), satisfies the written requirement. Keep proof of receipt. SMS and chat messages are riskier—use email or letter to be safe.
- When does the notice period start?
- Notice periods typically run from the day after the termination is delivered. If you send a letter on 15 March with 10 days' notice, the contract ends on 26 March. Check your employment contract and canton law; some rules vary. A lawyer can confirm the exact date.
- What if I miss the notice period?
- If you terminate without respecting the required notice period, the employee can claim damages for lost wages. The contract continues until the proper notice period expires—or you must pay compensation. Use a template and calendar to avoid this costly error.
General information for Swiss employers, not legal advice. Have a lawyer confirm anything with legal consequences.