Employment law
Challenging a dismissal in Luxembourg: the 3 month deadline you must not miss
12 May 2026 · 6 min
A forfeiture period, not a simple limitation period
In Luxembourg, an employee challenging a dismissal must act within a strict period, in principle three months. This is a forfeiture period: once it expires, the right to bring a claim is permanently lost, however strong the case may be.
The starting point depends on the circumstances (notification of the dismissal, communication of the grounds, or the employer's reply to a request for the grounds). It is precisely on this point that rights are lost for want of a swift response.
Requesting the grounds: a key step
Where a dismissal is given with notice, the employee may ask the employer to set out the grounds. The reply, or the absence of a reply, has direct consequences for whether or not the dismissal is unfair.
Grounds that are imprecise or provided too late may be enough for the dismissal to be classified as unfair, giving rise to a right to compensation.
What to do in practice
As soon as you receive the dismissal letter, keep every document and note the dates. Consult a lawyer without delay: the timetable is the main risk factor.
The firm assesses your prospects, calculates the applicable deadline and brings the challenge in the proper form.