Luxembourg employment contracts and dismissal: the rules for employers

Hiring is easy, ending is regulated

Luxembourg employment law sits in one place, the Labour Code (Code du travail). It is protective but predictable: notice, severance and deadlines are fixed in the statute, so the cost of a dismissal can be worked out in advance. What costs money is getting the procedure wrong.

Most disputes turn not on the reason but on a missed date, a vague letter, a dismissal sent after a sick note, or a fixed-term contract that was really permanent. Each turns a lawful dismissal into an unfair one, with damages on top of notice and severance.

This note covers the contract and every way of ending it, from the employer's side. Registration, payroll and hiring costs are in our note on hiring an employee in Luxembourg or the Netherlands.

The written contract, fixed terms and the trial period

Written contract. A contract of employment must be in writing, in two copies, one for each party, signed at the latest when the employee starts work. Without one, the employee can prove the relationship by any means; the employer cannot. Article L.121-4 lists the content: parties, start date, place of work, job description, working hours, salary and benefits, holiday, notice periods, trial period, supplementary pension and the applicable collective agreement.

The Law of 24 July 2024, in force since 4 August 2024, transposed the EU directive on transparent and predictable working conditions. It added overtime pay, the termination procedure and training to the list, and banned clauses forbidding a second job without an objective reason such as confidentiality or a conflict of interest. Older contracts are updated only if the employee asks.

Fixed-term contracts (CDD). A permanent contract (CDI) is the rule. A fixed-term contract needs a precise, temporary task, such as replacing an absent employee, seasonal work or a peak in activity, stated in writing, or it is treated as permanent. It may run for at most 24 months for the same employee, renewals included, and may be renewed twice. Neither side can end a CDD early except for serious misconduct; an employer that does so owes damages for the salary up to the end of the term, within the limit of the notice that would apply to a permanent contract.

Trial period. A trial period must be written into the contract at signing; it cannot be added later. It lasts at least two weeks and at most six months, three months for employees without a vocational qualification at CATP level. It can run to 12 months when the gross monthly salary reaches a statutory threshold, EUR 5,318.41 since the index tranche of 1 June 2026. After the first two weeks, either side can end it with notice of four days per month of trial, at least 15 days and at most one month, without reasons or severance. If the notice runs past the trial, the contract becomes permanent.

Law and practice: Labour Code, Articles L.121-4 (written contract and mandatory content), L.121-5 (trial period), L.122-1 to L.122-13 (fixed-term contracts); Law of 24 July 2024 on transparent and predictable working conditions, implementing Directive (EU) 2019/1152; trial threshold as published for 1 June 2026.

Working time, non-compete, confidentiality and telework

Working time. The normal limit is eight hours a day and 40 hours a week. With overtime, the absolute ceilings are ten hours a day and 48 hours a week. Overtime is paid at 140% or compensated with one and a half hours of rest per hour. Senior managers (cadres supérieurs) with real autonomy and clearly higher pay are outside these rules, if the facts support the label. Paid holiday is at least 26 working days.

Non-compete. A post-contractual non-compete clause is valid only if it is written, limited to activities similar to those of the employer, limited to a territory within Luxembourg and limited to 12 months from the end of the contract. It applies only if the employee's annual salary at departure reaches a threshold fixed by Grand Ducal regulation and indexed: EUR 65,991.97 before the June 2026 tranche, about EUR 67,640 after it. It is void for employees who were minors when they signed, and it falls away if the employer dismisses without serious reason or without proper notice. Payment is not required. Since the territory stops at the border, a competitor in Metz or Trier is out of reach; confidentiality and non-solicitation do that work.

Confidentiality. The duty of loyalty applies during the contract. Afterwards, the Law of 26 June 2019 protects trade secrets only if the employer took reasonable steps to keep them secret: a clear clause, IP assignment and access controls.

Telework. The interprofessional agreement on telework of 20 October 2020 was declared generally binding by Grand Ducal regulation of 22 January 2021. Telework is voluntary for both sides and agreed in writing, an e-mail is enough. Refusing it is not a ground for dismissal. For regular telework the employer provides the equipment and pays the communication costs. Since 2023 the Labour Code also requires companies to set rules on the right to disconnect.

Cross-border staff. For employees living in France, Belgium or Germany, home working has tax and social security effects. For income tax, the treaties allow 34 days a year worked outside Luxembourg before the country of residence taxes those days. For social security, below 25% of working time in the country of residence nothing changes, and between 25% and 49% telework the employee can stay in the Luxembourg system under the EU framework agreement, with an A1 certificate. Our note on personal tax for French residents working in Luxembourg explains the tax side.

Law and practice: Labour Code, Articles L.211-5 and following (working time), L.211-27 (overtime), L.233-4 (26 days' holiday), L.125-8 (non-compete); Grand Ducal regulation of 11 July 1989 (salary threshold, indexed); Law of 26 June 2019 on trade secrets; agreement of 20 October 2020 on telework, declared generally binding by Grand Ducal regulation of 22 January 2021; tax treaties with France, Belgium and Germany; EU framework agreement on cross-border telework.

Resignation, mutual agreement and dismissal with notice

Resignation. The employee resigns by registered letter or by a letter countersigned on a copy. Notice is half the employer's: one month below five years' seniority, two months from five to ten, three from ten. No reasons and no severance. An employee may resign with immediate effect for the employer's serious fault, such as unpaid salary, but must prove it.

Mutual termination. The parties can end the contract by agreement, in writing, in two copies, signed by both. No notice, no procedure, no statutory severance: only what the parties agree. But it excludes full unemployment benefit, so employees often ask for a dismissal with a settlement instead. A settlement (transaction) with reciprocal concessions is what closes disputes.

Dismissal with notice. A dismissal needs real and serious reasons, linked to the employee's conduct or ability or to the needs of the business. The procedure has four steps.

1. Preliminary interview (150+ employees)An employer with at least 150 employees must first invite the employee, by registered letter or letter against receipt, to an interview, stating its purpose, date, time and place. The interview takes place no earlier than the second working day after the invitation, and the dismissal letter is sent no earlier than the day after the interview and no later than eight days after it.
2. Dismissal letterRegistered letter, or handed over against a signed copy. It states the notice period, its start date and any release from work. Reasons are not required in the letter.
3. Request for reasonsThe employee may ask for the reasons by registered letter within one month of the letter. The employer must reply by registered letter within one month, precisely and completely. A late or vague reply makes the dismissal unfair; the employer cannot add reasons later.
4. Notice and exitNotice starts on the 15th of the month if the letter is sent before the 15th, otherwise on the 1st of the next month. The employer may release the employee from work during notice (garden leave) and still pays the salary; if the employee starts a new job, the former employer generally pays only the difference.

Severance (indemnité de départ) is calculated on the gross salary of the last 12 months, including regular bonuses, and paid at the end of notice. It is exempt from tax and social security. An employer with fewer than 20 employees can choose, in the dismissal letter, to extend the notice instead of paying severance. A collective agreement or the contract may be more generous.

Law and practice: Labour Code, Articles L.124-1 (resignation and notice), L.124-2 (preliminary interview), L.124-3 (notice periods and start date), L.124-5 (reasons on request), L.124-7 (severance and the option for employers under 20 staff), L.124-9 (release from work), L.124-13 (mutual termination)

Serious misconduct, protected employees and unfair dismissal claims

Serious misconduct (faute grave). A fault that makes continued work immediately and permanently impossible allows dismissal without notice and without severance: theft, fraud, violence, harassment, refusal to work. The letter must state the facts precisely, with dates; a vague letter cannot be repaired. The facts cannot be relied on more than one month after the employer learned of them, unless criminal proceedings were started within that month.

The employer may suspend the employee with pay; the letter, or the interview invitation at 150+ staff, then follows within eight days. The employee may obtain provisional unemployment benefit from the labour court while the case runs, repayable if he loses.

Protected employees. In several situations a dismissal is not just costly but void.

• Sickness. An employee who informs the employer on the first day of incapacity and sends the medical certificate by the third day cannot be dismissed, or invited to a preliminary interview, for 26 weeks from the start of the incapacity, even for serious misconduct. A letter received before the certificate stays valid, unless the employee was urgently hospitalised.
• Pregnancy and maternity. From the day the employer receives the pregnancy certificate until 12 weeks after the birth. A woman dismissed before giving the certificate can send it by registered post within eight days and the employer must annul the dismissal. For serious misconduct the employer may only suspend her and must ask the labour court to end the contract.
• Parental leave. Protection from the last date the request could be made, or from the request, until the end of the leave.
• Staff delegates. Members of the staff delegation, during their mandate, and former members and candidates for a limited period afterwards, cannot be dismissed; for serious misconduct the employer suspends and asks the labour court to terminate the contract.

Unfair dismissal claims. The employee sues before the labour court (tribunal du travail) in Luxembourg, Esch-sur-Alzette or Diekirch within three months of the dismissal letter or, where reasons were requested, of the employer's reply. A written complaint by the employee or the union to the employer within that time opens a further year. The employer bears the burden of proving the reasons. If the dismissal is unfair, the court awards material damages, the loss of income over a reference period it sets, net of benefit and new earnings, and usually modest moral damages, on top of notice and severance.

Law and practice: Labour Code, Articles L.124-10 (serious misconduct, one-month rule, suspension), L.124-11 (time limits and burden of proof), L.124-12 (damages), L.121-6 (protection during sickness), L.337-1 (pregnancy), L.234-47 (parental leave), L.415-10 and L.415-11 (staff delegates); ITM guidance on pregnant employees.

Collective redundancy, transfers, insolvency and managers

Collective redundancy. Dismissals for reasons not related to the employee are a collective redundancy when they affect at least seven employees within 30 days or at least 15 within 90 days. The employer must first negotiate a social plan with the staff delegation and the unions. ADEM must be notified in writing at the latest when negotiations begin, and the Labour Inspectorate (ITM) receives the documents. If the parties do not agree, the National Conciliation Office mediates. Individual dismissal letters may be sent only after the social plan is signed or the conciliation minutes are drawn up, and notice is at least 75 days.

Transfer of undertaking. When a business or part of it changes hands as a going concern, the employment contracts transfer automatically with all rights, including seniority. The transfer itself is not a ground for dismissal, and staff representatives must be informed and consulted. In a share deal nothing transfers, because the employer stays the same. Our note on buying or selling a Luxembourg company covers the deal side.

Insolvency. A bankruptcy judgment ends the employment contracts by law. Employees keep their salary for the month of the judgment and the following month, and part of the severance; the Employment Fund guarantees unpaid wage claims up to a ceiling linked to the minimum wage. Our note on a Luxembourg company in financial difficulty sets out the procedures and the managers' duties.

Managers who are also employees. A manager (gérant) or director can hold an employment contract with the same company only if there is a real link of subordination and, in practice, a technical function separate from the corporate mandate. A sole manager or controlling shareholder usually fails the test; the contract is then a sham, without Labour Code protection or unemployment benefit. Removing a director from his mandate does not end a genuine employment contract. Our note on the foreign director of a Luxembourg company covers pay, tax and social security.

Unemployment benefit. ADEM pays full unemployment benefit after an involuntary loss of work, for an employee who worked at least 182 days in the 12 months before. The benefit is 80% of previous gross pay, 85% with a dependent child, capped at 2.5 times the social minimum wage, EUR 6,928.33 a month on the EUR 2,771.33 rate in force since 1 June 2026, and two times it after 182 days. Resignation without good reason, mutual termination and dismissal for serious misconduct exclude it.

Law and practice: Labour Code, Articles L.166-1 and following (collective redundancy), L.127-1 to L.127-6 (transfer of undertaking, implementing Directive 2001/23/EC), L.125-1 (bankruptcy), L.126-1 (wage guarantee), L.521-1 and following (unemployment benefit); guichet.lu on unemployment benefits.

Three exits in numbers

Law and practice: Figures are assumptions for illustration. Employer contributions taken at about 13%; the actual rate depends on the mutual insurance class. Check weekends and public holidays for each deadline.

Check notice, severance and procedure

Simplified: Labour Code rules as of October 2026, no collective agreement and no more favourable contract terms. Collective redundancies follow a separate procedure.

Luxembourg employment contracts and dismissal: frequent questions