Summary dismissal over WhatsApp messages: when is it lawful?

Summary dismissal based on WhatsApp messages is lawful in the Netherlands only if three requirements are met at the same time: the messages disclose an urgent reason within the meaning of Article 7:678 of the Dutch Civil Code, the employer terminates without delay after discovering it, and the reason is communicated to the employee at the moment of dismissal. If one of the three fails, the dismissal can be set aside by the court even when the content of the messages is genuinely damaging.

Ontslag op staande voet is the heaviest instrument in Dutch employment law. The contract ends the same day, without a notice period, without a permit from the UWV and without a dissolution order from the subdistrict court (kantonrechter). That is precisely why the courts test every element strictly, and why the employer carries the burden of proving all of them. Screenshots of a group chat rarely do that work on their own.

What is summary dismissal under Dutch law?

Summary dismissal is the immediate termination of an employment contract for an urgent reason, given without delay and with the reason stated at once. The legal basis is Article 7:677 paragraph 1 of the Dutch Civil Code. Every other route to termination of employment in the Netherlands, as set out in our overview of Dutch employment law, requires either the employee’s written consent, a dismissal permit from the UWV or a dissolution order from the kantonrechter. Summary dismissal is the single exception, and it is read narrowly.

Article 7:678 of the Dutch Civil Code defines an urgent reason for the employer as acts, characteristics or conduct of the employee that mean the employer cannot reasonably be expected to allow the employment contract to continue. The second paragraph lists examples, among them theft, embezzlement, deliberate deception on entering into the contract, serious insult or threat towards the employer or colleagues, breach of a duty of confidentiality and stubborn refusal to follow reasonable instructions. That list is illustrative, not exhaustive, and appearing on it does not make a dismissal automatically valid.

Two layers sit inside the test. The reason must be objectively urgent, meaning the conduct itself is serious enough on any reasonable view, and it must be subjectively urgent, meaning this employer actually experienced it as making continuation impossible and acted accordingly. An employer who keeps the employee at work for weeks after reading the messages undermines the second layer without saying a word.

The court then weighs all the circumstances of the case, including the nature and seriousness of the conduct, the length and quality of the employment record, the way the employee has performed, and the personal consequences of losing the job. A long, unblemished record does not immunise an employee, but it does raise the bar the messages have to clear. For a wider view of the different exit routes, see our overview of how to handle employee dismissal legally.

When do WhatsApp messages amount to an urgent reason?

Messages qualify as an urgent reason when they show conduct that destroys the working relationship, not merely conduct that embarrasses the employer. The distinction decides most of these files. Passing customer data or a price list to a competitor, running a side business with the employer’s clients during working hours, arranging the falsification of hours or expense claims, threatening a colleague, or systematically harassing someone in a work group chat: these are the categories in which Dutch courts do uphold immediate dismissal.

Coarse language, a sarcastic remark about a manager, a complaint about the roster or a joke in poor taste in a private chat with two colleagues normally does not reach that level. Employees are allowed a degree of latitude in informal communication, and the fact that a message would look bad if printed out and put on a desk is not the test. The question is whether continuation of the contract has become impossible.

Context matters. Dutch courts look at what preceded a remark, who was in the chat, whether the tone was normal in that team, whether the employer had addressed it before and whether the employee was provoked. Four screenshots out of a thread of four hundred messages invite the reproach that the file is incomplete.

Whether the misconduct has been addressed before matters as well. If a warning, a formal reprimand, suspension or a transfer would realistically have solved the problem, summary dismissal is disproportionate. Employers who have tolerated the same behaviour from other staff, or who have never enforced their own communication policy, find it hard to argue that this instance made continuation impossible.

Are private chats treated differently from work group chats?

A message in a company WhatsApp group about work is workplace communication and can be used with little difficulty. A message in a private chat between two employees, or between an employee and a partner, carries a much stronger expectation of privacy, even where the content touches on work. That does not make the private message untouchable, but it shifts the balance the employer has to justify, both on privacy grounds and on the question of what the message really proves.

How quickly must the employer act?

The dismissal must follow the discovery of the urgent reason without delay. There is no statutory number of days. Dutch case law accepts the time an employer reasonably needs to investigate, to hear the employee, to consult a lawyer and, in a larger organisation, to have the decision taken by the person who is authorised to take it. What it does not accept is drift.

In practice the employer should move within days and be able to show what happened on each of them. Hearing the employee on the day the messages surface, verifying the account with the colleague who reported it, taking legal advice the next morning and sending the letter that afternoon is defensible; thinking it over for three weeks is not.

Suspension on full pay is the standard way of buying investigation time without losing the urgency argument. It signals that the employer treats the matter as serious while the facts are being established. Where the investigation is genuinely complex, for instance because message data has to be secured or several people have to be heard, the employer should record why each step took the time it did.

Why must the reason be stated at the moment of dismissal?

The reason for the dismissal must be communicated to the employee at the same time the contract is terminated, and it fixes the case. An employer cannot add a second ground later when the first one turns out to be weak, and cannot broaden a narrow accusation into a general complaint about attitude once proceedings have started. Article 7:677 paragraph 1 of the Dutch Civil Code requires the reason to be communicated immediately, and case law ties the employer to what was said at that moment.

The practical consequence is that the dismissal letter has to be precise. It should name the conduct, the dates, the chats concerned and why that conduct makes continuation impossible. A letter that says only that the employee has behaved unacceptably on WhatsApp gives the court nothing to test and gives the employee an easy point to make. Confirm the dismissal in writing on the same day, alongside the oral notification, and send it in a way that can be proved.

Hearing the employee before the decision is not an isolated statutory formality in Dutch dismissal law, but it is close to indispensable in practice. It is the moment at which an innocent explanation can surface, and a court will ask why an employer that was sure of its case did not want to hear one. Where the employee is confronted with the messages and given a real opportunity to respond, the file is far stronger. Compare the different position during the probationary period, discussed in our article on dismissal during probation in the Netherlands.

How do Dutch courts treat WhatsApp messages as evidence?

Dutch civil procedure works on free evidence. Under Article 152 of the Dutch Code of Civil Procedure, evidence may be produced by any means unless the law provides otherwise, and the assessment of that evidence is left to the judge. Screenshots, exported chat files, printouts and witness statements about what was in a chat are therefore all admissible in principle. Their weight is another matter.

Authenticity is the first battleground. A cropped screenshot proves very little: it shows no sender identity beyond a display name, no full timestamps and no surrounding conversation, and it is trivial to edit. An employer relying on WhatsApp evidence should secure a full export of the relevant conversation, keep the original device or the original file, note who took the export and when, and be able to explain how it was obtained. Where authenticity is genuinely contested, the court can appoint an expert, but by then the employer has already lost momentum.

Unlawfully obtained evidence is a second issue, and it plays out differently in Dutch civil proceedings than employers often expect. There is no automatic exclusionary rule. The interest in establishing the truth generally prevails, and evidence obtained in breach of privacy rules is excluded only in exceptional circumstances. That does not make unlawful collection cost-free: it can found a separate claim for damages, it colours the court’s view of the employer, and in the balancing exercise it can tip a borderline case the employee’s way.

The employer also has to prove that the employee actually sent the messages. Shared devices, an unlocked phone left on a desk and account access by a family member are defences that succeed more often than the plain content of a chat suggests. Where the identity of the sender is not independently corroborated, a summary dismissal built on a single chat is fragile.

What privacy limits apply to collecting the messages?

Reading an employee’s messages is processing of personal data and needs a lawful basis under the General Data Protection Regulation. In the employment relationship consent is almost never a valid basis, because the dependence between the parties means it is not freely given. Employers therefore rely on legitimate interests, and that basis only holds if the processing is genuinely necessary: there must be a concrete suspicion, the search must be limited to what that suspicion requires, and no less intrusive means must be available.

The Dutch data protection rules make necessity, proportionality and subsidiarity the three questions a court will run through. A targeted review of one conversation after a colleague reports a threat is defensible. Trawling through months of chats on a company phone because performance is disappointing is not. Data minimisation means the employer reads what it needs and stops, and it should record what was searched, why, and who had access.

Transparency comes before all of this. Employees must know in advance that communication on company devices may be inspected, in what circumstances and by whom. A written policy on the use of company phones, laptops and messaging tools is the instrument for that, and it should distinguish clearly between business and private use. Our article on whether your employer may read your WhatsApp messages goes into the position on private devices, and the same principles apply to company email.

Where the organisation has a works council, monitoring is not simply a management decision. Under Article 27 paragraph 1 of the Works Councils Act (Wet op de ondernemingsraden), the works council has a right of consent for any arrangement on the processing and protection of personal data of staff, under subsection k, and for any arrangement on facilities intended for or suitable for observing or monitoring the presence, conduct or performance of employees, under subsection l. A monitoring policy adopted without that consent can be invalidated at the request of the works council, which is an uncomfortable position for an employer that has already used the policy to dismiss someone.

What can the employee do after the dismissal?

An employee who wants to contest a summary dismissal must file a petition with the kantonrechter within two months of the day the employment contract ended. That period is a limitation period of a special kind: it cannot be extended, and once it has passed the dismissal stands, however defective it was. This is the single most important date in the file, and it is why employee rights in the Netherlands are lost more often through delay than through weak arguments.

There are two routes, and they are alternatives. The employee can ask the court to annul the termination, which restores the contract and with it the entitlement to wages, or can accept the end of the contract and ask for fair compensation, the billijke vergoeding, instead. Which route makes sense depends on whether the employee wants to go back, on the state of the relationship and on the strength of the case. Annulment is usually combined with a claim for continued payment of wages and, if necessary, an application in summary proceedings to secure income while the main case runs.

Alongside that, the employee can claim the statutory transition payment, the transitievergoeding, and compensation equal to the wages that would have been earned during the notice period the employer failed to observe. An employee who is dismissed on the basis of an accusation that turns out to be unfounded should also read our article on false accusations and your rights.

One warning applies to everyone who receives such a letter. Do not resign, do not sign a settlement agreement on the spot, and do not confirm in writing that you accept the dismissal. A signature can convert a contestable dismissal into a mutual termination and can cost the employee both the right to challenge it and, in some circumstances, unemployment benefit. Take the letter to a lawyer first.

What does a failed summary dismissal cost the employer?

If the court annuls the dismissal, the contract is treated as never having ended and back pay is due from the day of the dismissal, with statutory interest and, in principle, the statutory increase for late payment of wages. Where the employee has been out of work for months while the case ran, that alone can amount to a substantial sum, and it is owed regardless of whether the employee has returned to the workplace.

If the employee opts for compensation instead, the court can award fair compensation on top of the transition payment. Dutch law does not cap that amount or set a formula for it. The court looks at the circumstances, including the seriousness of the employer’s conduct, the income the employee has lost and is likely to lose, the length of service and the prospects on the labour market.

The transition payment is a separate matter and is often misunderstood. It is not forfeited simply because the dismissal was summary. It is only lost where the termination is the result of seriously culpable conduct by the employee, which is a higher threshold than an urgent reason, and even then the court can award it anyway if withholding it would be unacceptable by standards of reasonableness and fairness. Employers who assume that a summary dismissal ends the discussion about severance and dismissal procedure are frequently wrong.

The employer also loses the notice period it skipped. Where the dismissal is held invalid, the employer owes compensation equal to the wages over the applicable notice period. The mirror image exists as well: where the employee gave the urgent reason intentionally or through fault (Article 7:677 paragraph 3), it is the employee who owes the employer a fixed sum equal to the wages over the notice period, and the employer can claim it.

Finally, unlawful collection of messages can lead to a claim for damages under Article 82 of the General Data Protection Regulation, a complaint to the Dutch Data Protection Authority (Autoriteit Persoonsgegevens) and a works council dispute about a monitoring policy adopted without consent.

What should you check as an employer?

You must prove the urgent reason, the speed of your response and the lawful collection of the messages. Check these points before you dismiss:

• Secure the full conversation export and the original device or file, and record who made the export and when.
• Check that you read only what the concrete suspicion required, under a written policy that the works council approved (Article 27 paragraph 1 WOR).
• Suspend the employee on full pay if you need time, and document each day of the investigation.
• Hear the employee and confront him or her with the messages before deciding.
• State the conduct, dates and chats precisely in the dismissal letter, and send it on the same day as the oral dismissal.
• Consider whether a warning, a dissolution request or a settlement, if necessary through mediation, carries less risk.

What should you check as an employee?

You have two months from the end of the contract to file a petition with the kantonrechter (Article 7:686a paragraph 4 of the Dutch Civil Code). Check these points straight away:

• Note the exact date on which the contract was said to end and register the two-month deadline.
• Ask for the reason in writing if the letter is vague.
• Keep the full conversation, not only the messages the employer selected, and do not delete anything.
• Do not resign, do not sign a settlement agreement on the spot and do not confirm that you accept the dismissal.
• Check whether the employer waited, gave a vague reason or read private chats without a policy.
• Decide whether you want annulment and back pay, or fair compensation and the transition payment; our overview of employment law for internationals in the Netherlands explains the framework.

What can we do for you with a summary dismissal based on WhatsApp messages?

Our employment lawyers and dismissal lawyers advise employers and employees; you can also reach our employment law team directly:

• We assess within days whether the urgent reason, the timing and the letter will hold.
• We check whether the messages were collected lawfully and whether the monitoring policy had works council consent.
• We draft the dismissal letter, or the petition to the kantonrechter within the two-month period.
• We calculate back pay, the transition payment, the notice-period compensation and a fair compensation claim.
• We negotiate a settlement agreement where that serves you better than proceedings.

Summary

• Summary dismissal requires an urgent reason (Article 7:678 BW), a dismissal without delay and the reason stated at once (Article 7:677 BW).
• WhatsApp messages qualify only if they show conduct that makes continuation impossible, read in context; coarse language in a private chat usually does not.
• Screenshots are admissible (Article 152 Rv), but authenticity, the sender’s identity and GDPR limits on collection decide their weight.
• The employee must file a petition within two months; the court can annul the dismissal or award fair compensation.
• The transition payment is only lost with seriously culpable conduct, a higher threshold than an urgent reason.

Frequently asked questions