Compulsory social security activities: largest employers
43 Belgian companies in the sector (NACE 8430) report employees in recent accounts; here are the top 20. Union Nationale DES Mutualites Libres leads with 449.7 FTE (financial year 2025).
Top 20
Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).
Headcount reported by the company for all its sites: the jobs may be located elsewhere.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
← The whole Compulsory social security activities sector
Frequently asked questions
Who is the largest employer in Compulsory social security activities?
Union Nationale DES Mutualites Libres, with 449.7 full-time equivalents reported (financial year 2025).
How many Compulsory social security activities companies report employees?
43 out of 71, in accounts less than 3 years old.
Analyse companies in Compulsory social security activities
Filter these companies by size, soundness and trend, follow them and get an alert when their accounts or publications change.
Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 11 Nov 2026.