ONSS-RSZ • Belgium

National Social Security Office


European Affairs : -

 Victor Hortaplein 11 1060 Brussels

European Social and Health Policy focus

  1. The onss-rzv is the central office for recovery of contributions and the application of the European and bilateral legislation on the applicable legislation (Title II of Regulation 883/2004 and 987/2009).It is the authentic source for data on the eligibility in the schemes for employees and civil servants.
  2. The inspection services control the correct payment of contributions by the employers (datamining, inspections on the field, drafting of reports, …) and provide advice.
  3. The ONSS-RZV works in close collaboration with the “ministry level” (The Federal Public Service Social Security) and advises on new legislation, interpretation, and representation in the different platforms. It also takes initiatives to strengthen the collaboration with Belgian and foreign institutions.

Membership Info

If you are a national organisation responsible for statutory social insurance and would like information on becoming an ESIP member, please contact the Director.


The ESIP maintains this server to enhance public access to information about its members. Our goal is to keep this information up-to-date and accurate.If any errors are brought to our attention,we will try to correct them. However the ESIP cannot accept any responsibility or liability whatsoever with regard to the abovementioned information.