National Social Security OfficeVictor Hortaplein 111060 Brussels
Telephone: 02 509 59 59 Monday to Friday from 8:30 am to 5:00 pm
Fax: 02 509 30 19
Opening hours: Monday through Friday from 9:00 to 12:00 am or by appointment
How to reach our offices?
The NSSO has a network of provincial offices and branch offices where you can go for help or advice.
Overview of NSSO provincial offices and their addresses
use the contact form to submit possible complaints.
How does the NSSO handle complaints?