The Luxembourg court system: the jurisdictions you need to know
Judicial branch, administrative branch and Constitutional Court: which court does what, and how to stop confusing them on exam day.
Contents
The judicial power is the third power of the State, and its independence is a constitutional principle. The syllabus asks you to know which court does what — that is, to distinguish three sets whose names make them deceptively similar.
Two branches, plus one court apart
Learn the general architecture first; everything else follows.
| Set | What it handles | Top court |
|---|---|---|
| Judicial branch | Civil, commercial, criminal matters | Superior Court of Justice |
| Administrative branch | Disputes with the administration | Administrative Court |
| Constitutional Court | Conformity of laws with the Constitution | — |
Three similar names, three completely different missions. That is where most of the marks in this section are won or lost.
The judicial branch
It settles disputes between individuals and tries criminal offences.
The justices of the peace
Located in Luxembourg, Diekirch and Esch-sur-Alzette, they handle small civil and commercial disputes as well as minor offences. This is local, everyday justice.
The district courts
Two districts: Luxembourg and Diekirch. These courts hear larger civil and commercial cases and criminal offences.
The Superior Court of Justice
At the top of the judicial branch. It notably includes the Court of Appeal, which rehears cases at second instance, and the Court of Cassation, which reviews the application of the law without rehearing the facts.
Remember the towns: three justices of the peace — Luxembourg, Diekirch, Esch-sur-Alzette. Two district courts — Luxembourg and Diekirch. These locations are the subject of direct questions.
The administrative branch
It settles disputes between individuals and the administration: refusal of an authorisation, a ministry's decision, an administrative penalty, tax litigation.
- The Administrative Tribunal rules at first instance.
- The Administrative Court hears appeals and rules at last instance.
This is the branch that directly concerns administrative procedures — including, where relevant, decisions on residence or nationality.
The Constitutional Court
Its mission is unique: checking that laws conform to the Constitution.
How it is seized is distinctive and comes up in questions. It is not seized directly by a citizen. It intervenes by way of a preliminary question: when a court, in the middle of hearing a case, doubts whether the law it must apply conforms to the Constitution, it suspends its judgment and asks the Constitutional Court. The latter answers, and the case resumes.
This mechanism means a citizen cannot "challenge a law" on their own initiative: the constitutional doubt always arises from a concrete dispute.
Specialised courts
The syllabus also mentions courts competent in labour and social security matters. A dispute between an employee and an employer — dismissal, wages, contract — falls to the labour tribunal, not the administrative tribunal.
The European courts: the confusion to eliminate
Two European courts exist, and the exam constantly offers one for the other.
| European Court of Human Rights | Court of Justice of the European Union | |
|---|---|---|
| Organisation | Council of Europe | European Union |
| Text applied | European Convention on Human Rights | Treaties and Charter of Fundamental Rights |
| Seat | Strasbourg | Luxembourg |
| Seized by an individual | Possible, after domestic remedies are exhausted | Indirectly, mainly through a preliminary reference from a national judge |
Two memory aids:
- Human rights → Strasbourg. Justice of the Union → Luxembourg.
- The CJEU sits in Luxembourg because the country was a founding member of the ECSC and hosted its institutions from the 1950s.
The independence of the judiciary
This is a principle the syllabus places under "the three powers". Independence means a judge receives instructions neither from the Government nor from the Chamber of Deputies, and cannot be removed for the content of their decisions.
It is also what gives fundamental rights real substance: a right without an independent judge to enforce it remains a statement of intent. See: Who protects fundamental rights.
Six questions to check yourself
- Which court rules at last instance on a dispute with the administration?
- Where do the justices of the peace sit?
- How many district courts are there, and where?
- How is the Constitutional Court seized?
- Where does the European Court of Human Rights sit?
- Which court handles a dispute between an employee and an employer?
Answers: the Administrative Court — Luxembourg, Diekirch, Esch-sur-Alzette — two, in Luxembourg and Diekirch — by way of a preliminary question — Strasbourg — the labour tribunal.
Revision card
| Court | Mission |
|---|---|
| Justice of the peace | Small disputes, minor offences |
| District court | Larger civil and criminal cases |
| Superior Court of Justice | Top of the judicial branch |
| Administrative Tribunal | Disputes with the administration, first instance |
| Administrative Court | Administrative appeal, last instance |
| Constitutional Court | Conformity of laws with the Constitution |
| ECtHR (Strasbourg) | European Convention on Human Rights |
| CJEU (Luxembourg) | European Union law |
Test these distinctions on the free simulator, then return to the full guide to the institutions.