In this article
The official position
Luxembourg's language regime is set out in the law of 24 February 1984. Luxembourgish is the national language. French is the language of legislation. And Luxembourgish, French and German all function as administrative and judicial languages, meaning a resident can address the administration in any of them.
English has no official status. It is nonetheless one of the most widely used working languages in the country, and in parts of the economy it is the default.
The reason the situation feels complicated to an outsider is that these four languages are not layered by region, as they are in Belgium or Switzerland. They are layered by context. The same person, in the same street, will use a different language in the bakery, at the office, at the commune counter and with their children's school. Once you understand which language belongs to which context, the system becomes navigable rather than bewildering.
At work
This depends almost entirely on the sector.
In banking, fund administration, the Big Four, technology and the European institutions, English is the working language. Meetings are in English, documentation is in English, and a substantial number of employees never need another language professionally. Luxembourg's economy is unusually internationalised, with roughly half the resident population holding a foreign nationality and a very large cross-border workforce commuting daily from France, Belgium and Germany.
In the public sector, in law, in healthcare and in most client-facing local businesses, French is essential and Luxembourgish is a significant advantage. Many public-sector roles require competence in more than one of the three official languages.
In construction, hospitality and many trades, French and Portuguese are the everyday languages of the workplace, reflecting the composition of the workforce.
Before accepting a role, ask directly which language the team actually works in day to day. Job descriptions in Luxembourg are often more optimistic about language requirements than the reality of the office, in both directions.
With the administration
You can address the administration in Luxembourgish, French or German, and in practice many services also handle English, particularly in Luxembourg City where the international population is concentrated.
Written correspondence is a different matter. Official letters commonly arrive in French or German, and sometimes in Luxembourgish. This is the single most common source of friction for newcomers: a letter from the tax office or the commune that looks important and is not in a language you read.
Two practical points. Documents you submit that are not in French, German or English must be accompanied by a certified translation from a sworn translator, which is worth arranging before you arrive rather than after. And guichet.lu, the state's official information portal, publishes in English as well as French and German, which makes it the most useful reference point for any procedure. We use it as the source for our own guides, including registering with your commune.
In daily life
French is the language of the everyday. The bakery, the pharmacy, the supermarket checkout, the plumber, the parcel delivery, the parents at the school gate: French will carry you through nearly all of it.
This surprises people who expected Luxembourgish to dominate. The explanation is demographic. With such a large foreign-national population and a cross-border workforce arriving daily from France and Belgium, French has become the common denominator of public interaction. Two people who share no other language will usually land on French.
German appears more in written contexts than spoken ones: some official correspondence, parts of the press, and a significant role in the school system, where children are first literate in German before French is introduced.
Socially, and why Luxembourgish matters
Luxembourgish is not required for anything practical. It is, however, the language of the country, and its social weight is considerably greater than its practical necessity.
Among Luxembourgish nationals it is the language of home, of friendship and of political and cultural life. Speaking even a little of it changes how you are received, because it signals that you regard yourself as living here rather than passing through. The distinction matters in a country where a large share of the population is transient.
It is also a requirement for naturalisation, so anyone considering Luxembourgish citizenship in the long run needs to reach a defined level of spoken competence.
Start with Moien for hello, Merci for thank you, Äddi for goodbye and Wann ech gelift for please. It is a small investment with a disproportionate return.
How far English actually gets you
Further than in almost any comparable country, and less far than the expat consensus suggests.
English will handle your job in the financial sector, most restaurants and shops in the city centre, your bank if you choose a provider with an international offering, and a large part of the social life of the international community.
English will not reliably handle official correspondence, most tradespeople, healthcare outside the larger practices, smaller businesses outside the capital, or any interaction that leaves Luxembourg City. It also will not, on its own, connect you to the country as opposed to the international bubble within it.
The honest summary: English is enough to function indefinitely and not enough to belong.
What to learn, and in what order
- French, to a functional level. This is the highest-return investment by a wide margin. Enough to read a letter, make an appointment, deal with a tradesperson and hold a conversation at the school gate will change your daily life more than anything else on this list.
- Luxembourgish, socially. A few dozen phrases first, and a proper course if you intend to stay. Courses are widely available and heavily subscribed by residents, which itself tells you something.
- German, if your work or family situation requires it. Valuable in specific contexts and less broadly necessary than French for most newcomers.
The National Institute of Languages and various municipal and adult-education providers run courses at accessible prices, and evening classes designed around working schedules are the norm rather than the exception. Demand is high, so enrol early in the term.
The language of house hunting
Worth a practical note, because it affects a decision you will make in your first weeks.
Property listings in Luxembourg appear in French, German and English depending on the agency and the target audience, and private listings are frequently French-only. Lease contracts are commonly drafted in French, and since August 2024 every residential lease must be in writing to be valid.
That last point deserves emphasis. If you are signing a document in a language you do not read, get it explained clause by clause before you sign, particularly the rent and charges split, the deposit, the duration and the notice period. Our guide to renting a room step by step sets out what the contract must contain, and the guide to deposits and tenant rights covers the clause that involves the most money.
We work with clients in English and French, and every listing on our rentals page is published in English with the price, deposit and availability stated openly. If something in a contract is unclear, ask us rather than signing and hoping.
The realistic picture
Luxembourg is genuinely one of the easiest countries in Europe to arrive in without local language skills, and it is also a country where the people who make the effort have a visibly different experience of living here. Those two things are both true and they are not in tension.
Arrive in English. Learn French because it will save you time every week. Learn some Luxembourgish because it will change the temperature of your interactions. That order works for almost everyone.
