You can contact us during our visiting hours, from 9.00 am to 12.00 pm, at the following address: Victor Hortaplein 11, 1060 Brussels.
Please note ! This is only possible by appointment. Call us on the following number: +32 2 509 90 99. We also ask you kindly to respect some rules. Read these on our page detailing the measures taken by the OSS during the corona crisis.
Contact us
By e-mail
Send your questions, comments or documents to overseas@onss.fgov.be
By phone
Overseas Social Security Contact can be reached on +32 2 509 90 99, Monday to Friday from 8.30am to 5.00pm.
(Outside these hours, you can request a callback. Overseas Social Security Contact will return your call the following day.)
By post
Send your questions, comments or documents by post to:
NSSO | Overseas Social Security
Victor Hortaplein 11
1060 Brussels
Our office
You can contact us at our visiting hours, from 9.00am to 12.00pm, at the following address: Victor Hortaplein 11, 1060 Brussels.