Forms for cross-border workers (except Belgium)
- Phone: 2757-4220
- Fax: 2757-4310
Forms for Belgian cross-border workers
- Phone: 2757-4250
- Fax: 2684-5151
Belgian supplement (complément belgo-luxembourgeois)
- Phone: 2757-4249 / 4252
- Fax: 29 91 91
Registration of persons insured abroad but living or staying in Luxembourg
- Phone: 2757-4241 / 4244
- Fax: 2757-2766