RSZ - ONSS
Social security contributions management
- B2G
About RSZ - ONSS
Collection and management of employer and employee social contributions to finance social security branches and administrative data distribution.
Key facts
- Industry
- Government Administration
- Company size
- 251–1,000 employees
- Headquarters
- brussels, brussels region, Belgium
- Founded
- 1945
- Website
- rsz.be
- linkedin.com/company/rsz-onss
RSZ - ONSS in the news
- Pas op voor valse berichten die van de RSZ lijken te komen
The RSZ warns about phishing emails disguised as official communications, attempting to trick recipients into revealing bank details through fake websites.
- الضمان الاجتماعي في بلجيكا 2026.. دليلك الشامل لفهم حقوقك وواجباتك وكل ما تحتاج إلى معرفته
Belgium's social security system, undergoing reforms in 2025-2026, provides comprehensive coverage for workers and self-employed individuals, funded by contributions and managed by entities like ONSS and Mutuelle.
- Fraudulent email in the name of the ONSS
A fraudulent email campaign impersonating the ONSS is attempting to trick recipients into providing their bank details through a phishing link.
- Zenne River powers Belgium’s first large-scale aquathermic heating system
RSZ has installed Belgium's first large-scale river-based aquathermic heat pump system to sustainably heat its building, cutting emissions and costs.
- Des mails frauduleux circulent en masse au nom de l’ONSS
Fraudulent emails are circulating under the name of the National Social Security Office (ONSS) related to simplified tax declarations, and users are warned to identify and report these phishing attempts without clicking on links or providing personal information.
RSZ - ONSS at a glance
RSZ - ONSS is a B2G company in the Government Administration industry, headquartered in brussels, brussels region, Belgium.
RSZ - ONSS was founded in 1945.
RSZ - ONSS has 251–1,000 employees.
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