Legal support for every step of the journey
Immigration matters are rarely just administrative. They affect lives, families, futures. At Lex Thielen & Partners, we provide clear legal guidance across the full spectrum of Luxembourg immigration law, helping individuals and families build secure foundations for life, work, and belonging in the Grand Duchy.
Our Immigration Law Services
- Residence & Work Permits
Assistance with applications for salaried workers, posted workers, self-employed persons, students, trainees, and permits for private life. - Voluntary Return & Humanitarian Situations
Support for clients considering voluntary return or navigating complex humanitarian or statelessness cases. - Family Reunification
Support for reunification with third-country nationals or EU citizens, including document preparation, timelines, and appeals. - Multilingual Legal Support
We offer our services in English, French, German, Luxembourgish, Spanish, Italian, Portuguese, and with knowledge of Russian. - Nationality & Naturalisation
We guide clients through the process of acquiring Luxembourg nationality, whether through voluntary acquisition, recovery, option, or naturalisation. Naturalisation remains one of the most common routes for long-term residents. We assist with eligibility checks, administrative filings, and appeals when needed.
Why Clients Choose to Work With Us
We guide individuals through Luxembourg’s immigration rules, EU frameworks, and bilateral agreements always explaining the implications clearly and respectfully.
We work with clients from all walks of life, from asylum seekers and international families to highly skilled professionals. Our advice adapts to each situation.
With a diverse, multilingual team and strong experience in immigration appeals, we offer practical and empathetic legal support in the language that works for you.
Whether you’re dealing with a government body, employer, or cross-border issue, our team combines public law experience with day-to-day procedural precision.