Think You Can Add a Probation Period to Any Dutch Contract? Think Again.
A common assumption about Dutch probation periods can lead to costly legal traps. Discover the reality behind 'proeftijd' rules for temporary contracts and see how a simple AI query can prevent a major HR headache.

The Myth: "You can always include a one-month probation period. It's standard practice."
For many international HR managers, the probation period is a non-negotiable part of any employment contract. It’s the universal safety net, allowing both parties to test the waters. The common assumption is that a one-month trial is a safe, standard clause to add to any contract in the Netherlands, regardless of its duration.
The Scenario: A Costly Assumption
Meet Priya, the new Head of People for 'Innovate Global BV,' a fast-growing scale-up opening its European headquarters in Amsterdam. Back in her home country, a one-month probation period was boilerplate for every hire.
She was tasked with quickly hiring a specialist for a critical six-month project. She found the perfect candidate, Alex, and issued a six-month fixed-term contract. Confidently, she included her standard one-month probation clause. Alex signed, and everyone was excited to start.
Within three weeks, however, it became clear Alex was not the right fit. The performance was poor, and the project was already at risk. Priya, relying on her experience, called a meeting and informed Alex that the company was terminating the contract within the probationary period. She expected a simple, clean break.
Instead, Alex calmly replied, "I don't think you can do that. My contract is for six months, so the probation period isn't valid." Priya was stunned. A quick call to a local lawyer confirmed her fears: she had walked straight into a classic Dutch employment law trap.
The Reality: Dutch Probation Periods Are Strictly Regulated
In the Netherlands, you cannot simply add a probation period (known as proeftijd) to every contract. The rules are strictly defined by law (specifically, Article 7:652 of the Dutch Civil Code) and depend entirely on the duration of the employment agreement.
The clause in Alex's contract was void (nietig) from the moment it was signed. This means it legally never existed. Innovate Global BV was now locked into a six-month contract with an underperforming employee. Their options were either to build a complex dismissal file and attempt a difficult termination procedure or to pay Alex for the full term of the contract.
What started as a standard procedure turned into a costly operational and financial problem.
The AI Clarity Moment: A Problem Averted
How could Priya have avoided this? Before issuing the contract, she could have turned to an AI legal copilot for a simple gut check.
Her question to LawYours.AI: "Can I include a one-month probation period in a 6-month employment contract in the Netherlands?"
The AI's instant, clear answer: "No, under Dutch law (Article 7:652 BW), a probationary period is not permitted in temporary employment contracts with a duration of six months or less. Including such a clause would render it legally void. For contracts longer than six months but shorter than two years, a maximum one-month probation period is allowed."
This simple, two-sentence answer would have saved the company thousands of euros and a significant amount of stress, allowing Priya to structure the contract correctly from the start.
3 Simple Rules to Remember
Navigating Dutch contract law doesn't have to be complicated. When it comes to probation periods, just remember these three golden rules:
- Contract of 6 months or less: No probation period is allowed. None.
- Contract longer than 6 months, but less than 2 years: A maximum of one month's probation is allowed.
- Permanent contract or a contract for 2 years or longer: A maximum of two months' probation is allowed.
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.





