A 6-Month Contract with a 1-Month Probation? Debunking a Costly Dutch Employment Law Myth
Think you can add a probation period to any Dutch employment contract? Many international managers do, and it's a costly mistake. Discover the surprising reality of probation periods for short-term contracts in the Netherlands and see how to avoid a common legal pitfall.

The Myth: "You can always include a one-month probation period in a Dutch employment contract. It's standard practice."
This belief is common among international HR managers and executives setting up shop in the Netherlands. It feels intuitive. A probation period is a standard risk-management tool globally, allowing both parties to test the waters. What could possibly go wrong?
As it turns out, in the Netherlands, a lot.
The Scenario: A Costly Assumption
Meet Sarah, an experienced HR Manager for 'Global Connect Solutions,' a thriving UK tech company. They're expanding into the EU and have just opened a small project office in Amsterdam. Their first hire is Leo, a local software developer, for a crucial six-month project.
Sarah, using her company's standard international template, drafts a six-month fixed-term contract for Leo. It includes a one-month probation period, which Leo signs. It seems like a sensible, standard procedure.
Three weeks in, it's clear there's a problem. Leo has the technical skills, but his working style clashes dramatically with the team's collaborative approach. He works in isolation, misses daily stand-ups, and communication is proving difficult. Believing it's an open-and-shut case, Sarah calls Leo and informs him they're terminating his contract within the probation period, effective immediately.
She expects a difficult conversation but is shocked by Leo's response. He calmly informs her that his dismissal is unlawful. A few days later, a letter from a Dutch law firm arrives, explaining that the entire probation clause in Leo's contract was legally void from the moment it was signed. Global Connect Solutions is now facing a potential lawsuit for unfair dismissal and a significant claim for damages.
The Reality: The 6-Month Rule
Sarah fell into a classic trap that many foreign companies encounter. Dutch employment law is highly protective of employees, and its rules are extremely precise.
When it comes to probation periods (proeftijd), the rules are tied directly to the duration of the employment contract:
- Contract of 6 months or less: A probation period is not allowed. Any probation clause included in such a contract is automatically void (nietig).
- Contract longer than 6 months but shorter than 2 years: A probation period of a maximum of one month is allowed.
- Permanent contract or a contract for 2 years or longer: A probation period of a maximum of two months is allowed.
Because Leo's contract was for exactly six months, the one-month probation period had no legal standing. Sarah's attempt to terminate the contract based on this clause was, therefore, an unlawful dismissal.
The AI Clarity Moment: A 30-Second Check That Saves Thousands
How could Sarah have avoided this expensive and stressful situation? Before sending the contract, she could have turned to an AI legal copilot for a quick sanity check.
Instead of relying on assumptions, she could have asked LawYours.AI a simple question:
"Can I include a 1-month probation period in a 6-month fixed-term contract in the Netherlands?"
Within seconds, the AI would have delivered a clear, direct answer:
"No, a probation period is not permitted in a Dutch employment contract with a duration of six months or less. According to Dutch Civil Code (Article 7:652 BW), any such clause is legally void. For a contract to include a valid probation period, it must be longer than six months."
This single, instantaneous check would have alerted Sarah to the critical nuance of Dutch law, prompting her to draft a compliant contract and manage the performance issue with Leo through proper, legally sound channels.
3 Simple Rules to Remember
- Never Assume: Your home country's employment law standards do not apply in the Netherlands. Always verify local rules.
- Check Contract Duration First: Before you even think about a probation period, look at the total length of the contract. For contracts of 6 months or less, the answer is simple: no probation period.
- Put It in Writing (When Allowed): For longer contracts where a probation period is permissible, it must be explicitly agreed upon in writing by both parties before the employment begins.
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.





