'A One-Month Probation is Always Safe, Right?' The 6-Month Contract Trap in Dutch Law
Think a one-month probation period is standard in any Dutch contract? This common assumption can lead to costly wrongful dismissal claims. Discover the critical rule about 6-month contracts that every international manager must know.

The Myth: A one-month probation period is a safe, standard clause you can add to any Dutch employment contract for 'just in case'.
For managers expanding into the Netherlands, this feels like common sense. A trial period is a standard risk-management tool in many countries. But in the Netherlands, the rules are highly specific, and assuming a 'one-size-fits-all' approach is a direct path to a legal headache.
The Scenario: A Costly First Hire
Meet David, the newly appointed Country Manager for 'InnovateForward BV,' a dynamic UK tech firm launching its Amsterdam hub. His first task is to hire a junior developer. He finds the perfect candidate, Aisha, and wants to move fast. To stay flexible, he offers her a six-month contract, including what he believes is a standard, legally-sound one-month probation period.
Three weeks in, David feels the fit isn't right. Aisha's working style, while effective, clashes with the team's established rhythm. Believing he is well within his rights, he calls a meeting and informs Aisha that the company is terminating her contract within the probation period, effective immediately. He wishes her well and considers the matter closed.
A week later, a letter arrives from Aisha's legal counsel. It states that her dismissal was unlawful. The probation clause in her six-month contract was legally void from the moment it was signed. InnovateForward is now facing a wrongful dismissal claim, liable for legal fees and a potential severance payment.
The Reality: Dutch Law is Ultra-Precise on Probation Periods
David fell into a classic trap for international companies in the Netherlands. The validity of a probation period (proeftijd) is tied directly to the duration of the employment contract, as stipulated in the Dutch Civil Code (Article 7:652).
The rules are rigid and leave no room for negotiation:
- For contracts of 6 months or less: A probation period is not permitted. Any such clause is automatically void (nietig).
- For contracts longer than 6 months but less than 2 years: A maximum probation period of one month is allowed.
- For permanent contracts or contracts of 2 years or longer: A maximum probation period of two months is allowed.
Because David offered a six-month contract, the one-month probation period he included had no legal standing. It was as if it had never been written. His attempt to dismiss Aisha was, therefore, a termination without a valid legal ground, instantly exposing the company to a claim.
The AI Clarity Moment: A 10-Second Check That Saves Thousands
How could David have avoided this? Before issuing the contract, he could have turned to an AI legal copilot for a quick sanity check.
He could have asked LawYours.AI: "Can I include a one-month probation period in a 6-month employment contract in the Netherlands?"
Within seconds, the AI would have delivered a clear, unequivocal answer:
"No, under Dutch law (Article 7:652 of the Civil Code), a probation period is not permitted in a fixed-term employment contract with a duration of six months or less. Including such a clause would render it legally void."
This simple, instant query would have armed David with the correct information, prompting him to either offer a slightly longer contract (e.g., seven months) to validate the probation period or to proceed with the six-month term, fully aware that he had no trial period flexibility.
3 Simple Rules to Remember
- Duration Determines Everything: Before you even think about a probation period, look at the contract's length. If it’s six months or less, the answer is simple: no probation period is allowed.
- Put it in Writing (When Allowed): For longer contracts where a probation period is permitted, it must be explicitly agreed upon in writing and be equal for both employer and employee.
- Verify Before You Finalize: Use a trusted tool like an AI copilot to verify standard clauses. What is 'standard' in your home country can be a costly mistake in the Netherlands. A quick question can prevent a significant legal and financial fallout.
Disclaimer: This article describes a fictionalized scenario for illustrative and educational purposes only. It is not intended to be and should not be construed as legal advice. Any resemblance to actual events, entities, or individuals is purely coincidental.





