Forms for cross-border workers
- Phone: 2757-4220
- Forms for cross-border workers @: formulairesSE.cns@secu.lu
- Specific Belgian forms @: formulairesBL.cns@secu.lu
- Specific forms for pensioners @: formulairespensionneslu.cns@secu.lu
Belgian supplement (complément belgo-luxembourgeois)
- Phone: 2757-4249 / 4252
Registration of persons insured abroad but living or staying in Luxembourg
- Phone: 2757-4246 / 4664
- @: formulairesETR.cns@secu.lu