Due to the sanitary measures taken in the context of the COVID-19 (Coronavirus) crisis, the department of Overseas Social Security privileges a treatment of your requests by email or by phone. If necessary, visits to our offices are possible, but by appointment only (please call +32 2 509 90 99). We also ask you kindly to respect our rules. Read them 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 02 509 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.