The Void Clause: Debunking a Costly Myth About Dutch Probation Periods
Many international managers assume a probationary period is standard in any contract. In the Netherlands, adding one to a short-term contract isn't just a mistake—it's legally void. Discover how this common myth creates serious liabilities and how AI can provide instant clarity.

The Myth: "You can always include a one-month probationary period in a Dutch employment contract to test a new hire."
This belief, often imported from other legal systems, is one of the most common and costly mistakes international managers make when hiring in the Netherlands. It feels like a standard, low-risk way to assess a new employee, but Dutch law has very strict rules that can turn this 'safety net' into a legal trap.
The Scenario: A Predictable Problem
Meet Maria, the new Head of Sales for 'Global Foods BV' in Amsterdam. Eager to build her team, she hires a promising Business Development Manager, Jan, on a 6-month fixed-term contract. Coming from a UK legal background, Maria insists on including a standard one-month probationary period (proeftijd) in the contract. It seems like a sensible business practice.
Three weeks in, Maria feels Jan isn't the right fit for the company culture. Confident she is acting within the agreed probationary period, she informs Jan his employment is terminated, effective immediately. She is shocked when, a week later, Global Foods BV receives a letter from Jan's lawyer demanding full payment for the remaining 5+ months of the contract, citing an unlawful dismissal.
The Reality: A Void Clause is No Clause at all
Here’s the hard truth Maria missed: Under Dutch law (Article 7:652 of the Civil Code), a probationary period clause in a temporary employment contract of six months or less is legally void.
'Void' doesn't mean 'unenforceable'; it means it is considered to have never existed in the first place. From a legal perspective, Maria did not terminate Jan's contract during a valid probation period. She simply fired an employee with a valid fixed-term contract without legal grounds, opening the company to significant financial liability.
The law is designed to protect employees on very short contracts from having a disproportionate amount of their employment term be uncertain.
The AI Clarity Moment: A 30-Second Check That Saves Thousands
How could Maria have avoided this? Instead of relying on assumptions from another jurisdiction, she could have asked a simple question to an AI legal copilot like LawYours.AI.
Her Question: Can I include a one-month probationary period in a 6-month employment contract in the Netherlands?
LawYours.AI Instant Answer: No, you cannot. Under Article 7:652 of the Dutch Civil Code, a probationary period clause is void if included in a temporary contract of six months or less. For contracts longer than six months but shorter than two years, the maximum probationary period is one month.
This simple, source-verified check would have immediately flagged the issue, saving Global Foods BV from a costly legal dispute and reputational damage. It turns complex legal code into a clear, actionable business rule.
3 Simple Rules to Remember
- 6 Months or Less = NO Probation: If the fixed-term contract is for six months or less, you cannot include a probationary period. Any such clause is automatically void.
- Over 6 Months to 2 Years = 1 Month Max: For contracts longer than six months but less than two years, you can include a maximum probationary period of one month.
- 2 Years or More (or Permanent) = 2 Months Max: For contracts of two years or longer, or for permanent contracts, the maximum probationary period is two months.
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.





