How to hire an employee in Luxembourg: a step-by-step guide

Decide the status first, because in Luxembourg a judge decides it on the facts and not on the heading of the document. Article L.121-1 of the Code du travail builds an employment contract from three elements: work performed, remuneration paid, and a lien de subordination, the bond of subordination between the parties. The third element is the one that decides cases.

Subordination describes a person working to another party’s directions without independence in how the task is carried out. Luxembourg courts weigh a bundle of indicators: who gives instructions, who supervises, who can impose a sanction; whether the person sits inside an organised service with set hours and a set place; and who carries the economic risk. Exclusivity and non-compete clauses in a services agreement point the same way. Invoices and a self-employed registration do not settle it, and neither does the parties’ stated intention.

Where a relationship is reclassified, the Code du travail applies to it retrospectively, bringing wages, paid leave, overtime pay and the termination rules with it. Only the employee can ask the Tribunal du travail to reclassify. Undeclared work carries a separate penalty of €251 to €5,000 on a first offence. The test and its consequences are set out in our note on misclassification in Luxembourg.

The working rule for a foreign employer: if you want to say how, when and where the work happens, you are hiring an employee.

Luxembourg sets a national wage floor and then moves pay above it by law, so an offer needs a number and a rule. The salaire social minimum (SSM, the social minimum wage) is €2,771.33 a month gross for an unskilled adult worker and €3,325.59 for a skilled one, both in force since 1 June 2026, on a full-time 40-hour week. Skilled status is a legal classification resting on recognised qualification or experience rather than on the job title you choose, so confirm it before promising the higher rate.

Above the floor, pay is a market question. Luxembourg pays twelve monthly salaries. A thirteenth month is not statutory: it becomes an enforceable right only through the contract, a collective agreement or a settled practice known as usage constant, so the offer should say which of those, if any, you mean.

The feature foreign employers underestimate is indexation. When the six-month moving average of the national consumer price index rises 2.5% above the previous threshold, every salary in the country rises by 2.5% from the first of the following month. STATEC tracks the index month by month, and when a tranche lands the rise applies across the board without anyone negotiating it. Seven tranches arrived between October 2021 and June 2026, a cumulative uplift of about 18.9%. The figure in force since 1 June 2026 is a cote d’application of 992.24.

So a Luxembourg offer should quote the salary together with the index figure it is calculated at. Article L.121-4 of the Code du travail asks for the basic salary and the index cote in force in the contract, with supplements and bonuses listed separately. A candidate reading “€65,000 at index 992.24” can see how the figure behaves; one reading “€65,000” cannot.

Two checks belong in the first conversation: whether the candidate needs permission to work in Luxembourg, and whether they will live there at all. Nationals of the EU, the EEA and Switzerland need no work permit and no residence permit, but they still register with their commune, filing a déclaration d’arrivée within eight days of arriving and a registration declaration within three months.

A third-country national follows the salaried worker route, which is long enough to move a start date. The employer declares the vacant post to ADEM before advertising it anywhere, then requests the certificate that allows recruitment of a third-country national: five working days for shortage occupations with no labour market test, longer where ADEM must look for registered jobseekers first. The candidate then applies for an autorisation de séjour temporaire before travelling, answered by the Ministère des Affaires intérieures in up to four months, then a visa where the nationality requires one, a declaration of arrival within three days, a medical check, and an €80 residence permit application. Four to seven months end to end is realistic.

The EU Blue Card is the quicker route for a highly qualified hire: gross annual pay of at least €65,652 in 2026, a contract of at least six months, no labour market test, and an authorisation decision within three months. Both routes are covered in our guide to hiring non-EU workers in Luxembourg.

Many people employed in Luxembourg do not live there. A large share of the workforce commutes in from Belgium, France and Germany, and under Regulation 883/2004 someone who works only in Luxembourg is insured in Luxembourg. Home working moves both pictures. Each of the three treaties tolerates 34 days a year worked outside Luxembourg before those days become taxable in the country of residence, and once that is passed every outside day is taxed there from the first one. Social security stays in Luxembourg while telework from home remains under 50%, though from 25% upwards a declaration to the CCSS is needed to keep it there.

The contract must be in writing, in two signed originals, at the latest at the moment the employee enters service: one original for each side, with no grace period after day one. Article L.121-4 of the Code du travail lists what the document carries: the parties and their addresses, the start date, the place of work, the job title, category and tasks, working time, overtime and the work schedule, the remuneration with the index cote in force and any supplements shown separately, paid leave, the notice periods, any probation period and its terms, the collective agreement where one applies, the bodies collecting social security contributions, and the training entitlement. Several of those may be met by reference to the applicable law rather than reproduced in full.

Language is a question of comprehension rather than a prescribed list. The Inspection du travail et des mines accepts a contract in any language both parties understand, so an English contract is valid where the employee genuinely reads English. A contract in a language the employee does not follow is exposed to annulment for defect of consent. The administration is separate: the CCSS publishes its declarations only in French and German.

Most hires are a contrat à durée indéterminée (CDI, the open-ended form). A contrat à durée déterminée (CDD, the fixed-term form) is available only for a precise and non-durable task and runs to 24 months at most, renewals and probation included. Our guide to Luxembourg employment contracts covers both.

Probation is optional, agreed in writing by the first day, and cannot be renewed. It runs from two weeks to three months below CATP/DAP qualification level, six months at or above it, and twelve months where the contracted gross monthly salary reaches €5,318.41 at the current index. Neither side may terminate during the first two weeks except for faute grave. After that, notice on a probation set in months is four days per month agreed, with a floor of fifteen days and a ceiling of one month.

Two registrations follow signature: the employee is declared to the social security authorities and the tax card comes from the tax authority. The déclaration d’entrée, the entry declaration, reaches the Centre commun de la sécurité sociale (CCSS) within eight days of the start date, filed through MyGuichet.lu, the SECUline channel or on paper. Beyond a thirty-day tolerance, late filing costs €50 per month of delay, capped at €2,500. A business employing in Luxembourg for the first time also files a déclaration d’exploitation within eight days of that first start date, which affiliates it to accident insurance, the Mutualité des employeurs and an occupational health service, and produces the employer reference number the CCSS uses thereafter.

The fiche de retenue d’impôt (tax card) is issued by the Administration des contributions directes (ACD) and carries the employee’s tax class, deductions and tax credits. It has been a multi-year electronic document since 2021, retrieved by the employer through the professional space on MyGuichet.lu, and since 1 January 2022 the employee no longer hands over a paper card. Ask for it as soon as the start date is fixed: without a card the withholding defaults to tax class 1 at a minimum rate of 33%, which means a poor first payslip and a correction the following month.

Non-residents run through the same two filings. A frontalier resident in Belgium, France or Germany is declared to the CCSS in the same way and receives a non-resident tax card, normally in tax class 1.

The first payroll is where the contract, the tax card and the CCSS registration meet. Where an EOR runs the hire, these steps are sequenced for you, as the five-step EOR process sets out. Employer social security is around 13.29% of gross for a standard commercial employer, ranging from roughly 12.5% to 15.3% by accident class and Mutualité class, and the employee pays 12.95%. Most branches stop at the plafond cotisable (the contribution ceiling) of €13,856.63 a month from 1 June 2026. Income tax is withheld at source across 23 bands to a top rate of 42% above €234,870, plus a 7% solidarity surcharge. The monthly salary declaration goes back to the CCSS within ten days, and the contribution bill is paid within ten days of its issue date. Our guide to Luxembourg payroll follows the cycle month by month.

Before the first day, have these in place:

• The contract signed in two originals, with the salary, the index cote and any probation
• The employee’s identification details, address and bank account
• Proof of the right to work where the candidate is not an EU, EEA or Swiss national
• The country of residence, and an agreed number of home-working days for a commuter
• The entry declaration ready to file within eight days of the start date
• The tax card requested, so the first payslip is not run on the default rate
• Any benefits settled, such as meal vouchers at €15 face value

Timing turns on the permit question. For a candidate who already has the right to work in Luxembourg, a hire is a matter of days: through Employer of Record Luxembourg a draft contract is usually ready within hours of the salary and start date being agreed, and onboarding typically takes one to two days for EU nationals. Forming a company of your own puts a business permit and, in practice, eight to fourteen weeks in front of the same first payslip.