A 2-Month Probation in a 1-Year Contract? Debunking a Costly Dutch Employment Myth
International managers often assume a two-month probation period is a safe standard for a one-year Dutch contract. This costly myth can invalidate a dismissal entirely. Learn the strict Dutch rules and see how an AI copilot provides instant clarity.

The Myth: A two-month probation period is the 'standard' and safest option for a one-year employment contract.
For many international HR managers, a two-month trial period feels like a prudent, standard practice. It offers what seems like a reasonable window to assess a new hire's capabilities. This assumption is often directly written into templates for Dutch employment contracts, especially when a company is new to the Netherlands.
The Scenario: A Costly Assumption
Meet Liam, a UK-based manager heading up the new Amsterdam office for ‘Innovate Forward BV’, a fast-growing tech firm. He hires Anna, a promising software developer, on a one-year fixed-term contract. Drawing from his experience in other jurisdictions, Liam includes a two-month probation period in her contract. Both parties sign, and Anna starts work.
After six weeks, Liam feels Anna isn't the right fit for the team's workflow. Confident he's acting within the probation period, he terminates her contract, giving her the bad news on a Friday afternoon. He thinks the matter is closed. A week later, a letter from Anna's lawyer arrives. It states her dismissal was unlawful and that she is still an employee of Innovate Forward BV.
Liam is stunned. How could this be? The probation period was clearly stated in the contract she signed.
The Reality: Dutch Probation Periods Are Not Flexible
The Netherlands has very strict, mandatory rules regarding the maximum length of a probation period (proeftijd). Crucially, if you include a probation period that is longer than the law allows, it isn't shortened to the maximum legal term—it becomes void (nietig). This means the law treats the contract as if it never had a probation period at all.
The rules are tied directly to the contract's duration:
- Contract for 6 months or less: No probation period is allowed.
- Contract longer than 6 months, but shorter than 2 years: Maximum 1-month probation period.
- Contract for 2 years or longer, or a permanent contract: Maximum 2-month probation period.
Liam’s mistake was applying the two-month rule to a one-year contract. Because Anna's contract was for 12 months, the maximum probation period was one month. By including a two-month clause, the entire probation period was legally invalid from day one. When he terminated her employment after six weeks, he wasn't firing an employee on probation; he was attempting to dismiss a regular employee without a valid legal reason, instantly exposing the company to a significant claim.
The AI Clarity Moment
Before issuing the contract, Liam could have avoided this entire headache with a simple query to an AI copilot like LawYours.AI.
He could have asked: “What is the maximum probation period for a 1-year employment contract in the Netherlands?”
LawYours.AI would have instantly delivered a clear, unambiguous answer:
“For an employment contract with a duration of one year in the Netherlands, the maximum permitted probation period is one month. According to Article 7:652 of the Dutch Civil Code, a probation period of two months is only permissible for contracts of two years or longer, or for permanent contracts. Including a two-month probation period in a one-year contract renders the clause void.”
This simple check would have saved Innovate Forward BV thousands of euros, significant stress, and potential reputational damage.
3 Simple Rules to Remember
- Check the Duration First: Before you even think about the probation period, confirm the exact length of the employment contract. The contract's duration dictates the probation rule.
- One Year ≠ Two Months: Burn this into your memory: a one-year (or any contract between 6 and 24 months) contract allows for a maximum of one month of probation. Never more.
- When in Doubt, Ask: Dutch employment law is precise and leaves little room for error. A quick query to a reliable tool like an AI legal copilot is infinitely cheaper than a wrongful dismissal claim.
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.





