Luxembourg legal framework

EoR Luxembourg™ — Luxembourg legal framework reference.

The labour, tax and social security rules that govern Employer of Record arrangements in Luxembourg.

Legal framework — key facts

Dedicated statute	None — common labour law applies ^[1]
Loan of labour	Code du travail, art. L.131-1
Temporary work	Code du travail, art. L.222-1 et seq.
Labour authority	ITM
Social security	CCSS
Tax	ACD

Luxembourg has not adopted a statute equivalent to the French portage salarial (articles L.1254-1 et seq. of the French Labour Code). The Employer of Record arrangement therefore operates under ordinary labour law and, in most operational setups, under the regime of temporary agency work.

No dedicated statute

The absence of a dedicated EoR statute in Luxembourg has two consequences. First, every arrangement must be anchored in an existing legal vehicle (employment contract + services contract, or temporary agency placement). Second, the case law on subordination, loan of labour and disguised employment applies fully — meaning that the form of the contract is not sufficient to validate the substance of the relationship.

Labour Code articles

Article L.131-1 prohibits the loan of labour with a profit-making purpose outside of authorised cases (notably temporary agency work). Articles L.222-1 et seq. govern temporary agency work, which provides the most operational legal vehicle for an EoR arrangement when the assignment fits the limited cases foreseen by the Code: replacement, temporary increase of activity, occasional work.

Competent authorities

ITM — Inspection du travail et des mines: enforces labour law.
CCSS — Centre commun de la sécurité sociale: registration, contributions, A1 certificates.
ACD — Administration des contributions directes: payroll tax withholding, tax cards.
ADEM — Agence pour le développement de l'emploi: vacancy declaration where applicable.

Collective agreements

Several sectors are covered by collective bargaining agreements that may impose minimum salary scales, working time arrangements and benefits. The applicable agreement must be identified before signing the EoR contract, otherwise the worker may claim the more favourable terms ex post.

Work and residence permits

Third-country nationals require a work and residence permit (single permit or salaried worker permit). The EoR, as legal employer, files the application. EU/EEA/Swiss nationals require only a registration certificate after three months of presence.

Cross-border workers

With ~47% of the active population commuting from France, Belgium and Germany, cross-border taxation is central. Bilateral tax treaties allocate taxing rights based on physical presence; bilateral social security frameworks (EU 883/2004) determine the applicable regime, with A1 certificates documenting it.

Telework thresholds

For tax purposes, workdays performed outside Luxembourg may be taxed in the country of residence beyond agreed thresholds (34 days for France since 2023, with similar arrangements for Belgium and Germany). For social security, the EU framework agreement on cross-border telework allows up to 49.99% remote work in the residence country while keeping Luxembourg as the competent state, when both countries have signed.