Dismissal for Urgent Cause in Belgium: Ontslag om Dringende Reden / Licenciement pour Motif Grave

Most Belgian dismissals end with a notice period or an ontslagvergoeding / indemnité de rupture in its place. Ontslag om dringende reden, licenciement pour motif grave in French, is the exception: a route under article 35 of the wet van 3 juli 1978 betreffende de arbeidsovereenkomsten that lets either side end the contract on the spot, with no notice and no indemnity, when the other party's conduct crosses a specific legal threshold.

That threshold is narrow by design, and the procedure around it is strict. Miss a form requirement or a deadline and the dismissal stops being a dismissal for urgent cause at all, converting into an ordinary one that does carry notice or an indemnity. This page sets out the definition, the double deadline that trips up most sources, how the reasons must be communicated, who has to prove what, and which court decides a dispute.

Information last verified on 21 July 2026. This page provides general legal information and does not constitute legal advice in an individual case.

What to do right away

Register with the RVA / ONEM and ask the employer for the C4 without delay, whether or not the dismissal is going to be disputed.

A C4 recording a dismissal for urgent cause leads the RVA / ONEM to make its own assessment, independent of the employer's label. Under article 51 §1, 2 of the KB van 25 november 1991, the test it applies is whether the dismissal was for a reason that is fair given the worker's own culpable conduct, and it applies that test on its own rather than deferring to the employer.

Two consequences that can follow are not the same thing. Exclusion, under articles 51 and 52, is the RVA's own fault finding, and it runs for a fixed number of weeks: 4 to 26 weeks on a first occurrence, 8 to 52 weeks on a repeat within a year, and permanently on a further repeat within two years. Suspension is different and forward-looking: it applies where a worker drew provisional unemployment benefits while a labour-court case was pending and then lost that case; past provisional payments are not clawed back in that situation, only future benefits stop, and only after a further RVA hearing.

The RVA can act on the C4 and its own investigation without waiting for a court ruling, and even after a labour court rules on the dismissal, the RVA makes its own separate determination rather than following the court.

Where the dismissal is going to be disputed, request the concrete written reasons and get advice quickly.

The statutory definition

Article 35 defines urgent cause in a single sentence: "de ernstige tekortkoming die elke professionele samenwerking tussen de werkgever en de werknemer onmiddellijk en definitief onmogelijk maakt." In English, that reads as the serious shortcoming that makes any further professional cooperation between the employer and the employee immediately and definitively impossible.

Two words in that definition carry the weight of the whole test. "Immediately" means the shortcoming has to make continued cooperation impossible right away, not just difficult or undesirable. "Definitively" means it has to be a break that cannot realistically be repaired within the relationship, not a single lapse that could be addressed through an ordinary warning or disciplinary step. Because the test is fact-specific, whether a given act clears that bar is ultimately a question for the arbeidsrechtbank / tribunal du travail, not something a general list of examples can answer with certainty.

The double three-working-day deadline

This is the part most sources get wrong, because it looks like a single deadline and is actually two, running at different points in the process.

First clock: the deadline to dismiss. Once the party invoking urgent cause has known the relevant fact for at least three working days, dismissal for urgent cause can no longer be given on the basis of that fact. This clock starts running from the moment the fact is known with enough certainty to justify a decision, not necessarily from the moment the underlying conduct happened.

Second clock: the deadline to give the reasons. Once the dismissal itself has been given, the specific reasons for it must be notified within three working days after the dismissal. This clock only starts once the first one has already produced a dismissal; it is a separate, later window, not an extension of the first.

Article 35 itself does not define what counts as a working day for either clock. That definition comes from case law: a Hof van Cassatie ruling of 27 February 1995 held that Sundays and public holidays are excluded from the count, while Saturdays count as working days. It survives today because a statute of 26 december 2022 expressly carved labour law out of the general definition of "working day" introduced in Book 1 of the new Civil Code (article 1.7 §3), a definition that would otherwise have excluded Saturdays from the count starting 1 January 2023. Miscounting by a single day, most often by treating a Saturday as a non-working day, is a common way this deadline is missed.

Treating these as one deadline, or as the same three days counted twice, is the single most common error in describing this rule. A dismissal can validly clear the first deadline and still fail the whole procedure because the reasons were sent on the fourth working day rather than the third.

How the reasons must be notified

The specific reasons for the dismissal have to reach the other party through one of three valid methods:

• A registered letter.
• A bailiff's writ, the exploot van gerechtsdeurwaarder or exploit d'huissier de justice, served by a gerechtsdeurwaarder / huissier de justice.
• Handing over a written document directly to the other party.

The third method is the one general summaries most often leave out, but it is a valid method in its own right. Where a document is handed over in person, the recipient's signature on it serves only as proof that the document was received. It is not an acknowledgment that the stated reasons are accurate, and it does not amount to accepting the dismissal.

Burden of proof

The burden of proof sits entirely with the party invoking urgent cause, whether that is the employer or the employee. That party has to prove two separate things: that the underlying fact actually constitutes urgent cause under the article 35 definition, and that both procedural deadlines described above were respected. Proving the misconduct occurred is not enough on its own if the timing cannot also be established.

The consequence, and what happens if a deadline is missed

Where a dismissal for urgent cause is validly given and validly proven, the consequence is that no notice and no indemnity is owed for the dismissal itself. The statute is explicit that this is without prejudice to any separate claim for damages: a valid dismissal for urgent cause does not by itself shield either party from a further claim where the underlying conduct caused separate, provable harm.

Where either deadline is missed, or the wrong notification method is used, the dismissal stops qualifying as a dismissal for urgent cause. That does not usually undo the termination of the contract where a dismissal was actually communicated; instead, it converts the situation into an ordinary dismissal, which does carry notice or the ontslagvergoeding / indemnité de rupture described on the Belgium severance pay page. In practice this means a procedural slip can turn a cost-free dismissal into a full-priced one.

Which court hears the dispute

Disputes over whether a dismissal for urgent cause was justified, and whether the form and deadlines were respected, are heard by the arbeidsrechtbank, called the tribunal du travail in French, the specialised court that handles employment and social security matters. Either the employer or the employee can bring the question before that court, and the burden-of-proof rule above applies there just as it does outside of litigation.

It cuts both ways: an employee can resign for urgent cause too

Article 35 is not written only for employers. An employee facing conduct by the employer that meets the same definition, a serious shortcoming making continued cooperation immediately and definitively impossible, for example a fundamental breach of the contract by the employer, can resign on the same basis. The same double three-working-day deadline applies, and the same burden of proof falls on the employee to establish both the underlying fact and that the deadlines were met. The consequence mirrors the employer side: no notice obligation runs against the resigning employee, without prejudice to any separate damages claim either party may have.

Sector rules and collective dismissals

Article 35 lets either party end an individual contract on the spot; it does not touch what a sector's own collective agreement, negotiated by the applicable paritair comité / commission paritaire, may separately require, and it does not apply to a collective dismissal. Where the paritair comité covering an employer is not already known, the official lookup tool at public-search.werk.belgie.be allows a search by a committee number or name already known, or browsing the full list; it is not a wizard that identifies a committee from a description of the work performed. Where the committee genuinely cannot be identified this way, the official route is a written advisory request to the Labour Law Inspection, which takes at least four months and produces non-binding advice, since only the labour courts can settle the question definitively. Collective dismissals follow a separate information-and-consultation procedure under the Wet van 13 februari 1998 (known as the Wet Renault), with the step-by-step procedure set by CAO nr. 24, rather than the individual rules described on this page.

The deadline that ends every claim

Article 15 of the wet van 3 juli 1978 time-bars claims arising from an employment contract at the earlier of two points: one year after the contract ends, or five years after the fact giving rise to the claim, whichever comes first. The five-year branch is itself capped so that it can never run past one year after the contract ends. The scope is broad, covering actions arising from the contract in general, which includes both a claim for unpaid severance and a challenge to a dismissal.

Where severance is paid in instalments under article 39bis, a separate sub-rule applies: the one-year period runs from the last monthly instalment actually paid by the employer, not from the date the contract ended.

This deadline does not pause while a claim is negotiated informally, and it does not pause while a dispute with the RVA / ONEM is working its way to a resolution.

This page provides general information about Belgian dismissal for urgent cause and does not constitute legal advice for an individual case. Deadlines in this area are short and strictly enforced; confirm the current text of article 35 of the wet van 3 juli 1978 and seek advice promptly if a specific situation is time-sensitive.

Frequently Asked Questions

What exactly counts as a dringende reden / motif grave?

The statute defines it as the serious shortcoming that makes any further professional cooperation between employer and employee immediately and definitively impossible. It is a high bar: the misconduct has to be serious enough that continuing the relationship, even for the length of an ordinary notice period, is not workable. Whether a specific set of facts clears that bar is decided case by case, ultimately by the arbeidsrechtbank / tribunal du travail.

Is there really only one three-working-day deadline?

No, there are two, and confusing them is the most common mistake made about this rule. The first deadline is for the dismissal itself: it can no longer be given once the party invoking urgent cause has known the fact for at least three working days. The second, separate deadline is for the reasons: once the dismissal has been given, the specific reasons must be notified within three working days after that dismissal. Missing either clock independently can undo the dismissal for urgent cause.

How do the reasons have to be communicated?

Three methods are valid: a registered letter, a bailiff's writ (exploot van gerechtsdeurwaarder / exploit d'huissier de justice), or handing over a written document directly to the other party. Where a document is handed over, the recipient's signature only proves that the document was received, not that its content is accepted or agreed.

Who has to prove the urgent cause existed?

The party that invokes it, whether that is the employer or the employee. That party must prove both the underlying fact and that the two three-working-day deadlines were respected. If either element cannot be proven, the dismissal for urgent cause can fail even where the underlying conduct genuinely occurred.

What happens if the employer misses one of the deadlines?

The dismissal is no longer validly a dismissal for urgent cause. Missing the deadline does not undo the termination of the contract itself where a dismissal was actually given, but it converts what should have been a cost-free dismissal into an ordinary dismissal, meaning notice or an ontslagvergoeding / indemnité de rupture becomes owed under the general rules.

Does a dismissal for urgent cause rule out any other claim?

No. The statute is explicit that a valid dismissal for urgent cause is without prejudice to any separate claim for damages either side may have, for example where the underlying misconduct also caused financial loss beyond the employment relationship itself.

Can an employee resign for urgent cause too?

Yes. Article 35 is not one-directional. An employee facing a serious shortcoming by the employer, for example a fundamental breach of the contract, can end the relationship immediately on the same basis, subject to the same double three-working-day deadline and the same burden of proof.

Which court decides a dispute over urgent cause?

The arbeidsrechtbank, called the tribunal du travail in French, the specialised court that hears employment and social security disputes. Either party can ask the court to rule on whether the urgent cause was genuine and whether the deadlines and form were respected.