How many hours can I work while studying in Luxembourg on a student permit?

Luxembourg lets third-country student permit holders take paid work alongside full-time study, but caps it during term so studies stay the priority. The limit is an average of 15 hours per week measured over a one-month period while courses are running.

Outside that, the restriction lifts: work during official school holidays is not capped, and doctoral research work is treated separately rather than counting against the hourly limit. Internships that form part of your academic programme do not require a separate trainee authorisation, which makes course-linked placements straightforward.