Ranking · Office administrative and support activities

Office administrative and support activities: largest employers

423 Belgian companies in the sector (NACE 8210) report employees in recent accounts; here are the top 20. Productions Associées leads with 1,606.0 FTE (financial year 2025).

Top 20

Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).

#Company Total assetsRevenue EquityFTEYear
1 Productions Associées 1060 Saint-Gilles €62.3m €190.9m €38.1m 1,606.0 2025
2 Start People Services 2000 Antwerp €6.34m €27.8m €2.37m 751.5 2025
3 PARTENA - SECRETARIAT SOCIAL D'EMPLOYEURS - PARTENA - SOCIAAL SECRETARIAAT VOOR werkgevers 1000 Brussels €614.2m €131.7m €95.7m 745.5 2025
4 Group S 1000 Brussels €141.6m €86.1m €104.3m 654.7 2025
5 Acerta Sociaal Secretariaat - Acerta Secretariat Social - Acerta Sozialsekretariat 1020 Brussels €490.1m €146.5m €45.3m 586.7 2025
6 Liantis sociaal secretariaat 8000 Bruges €422.9m €103.0m €54.1m 561.4 2025
7 Actief People 3560 Lummen €21.5m €37.6m €14.0m 460.2 2025
8 Secrétariat Social des Classes Moyennes 5100 Namur €128.3m €57.9m €17.2m 405.4 2025
9 Groep Securex - Groupe Securex 1040 Etterbeek €21.7m €63.1m €2.98m 366.3 2025
10 Eligio 1800 Vilvoorde €9.84m €19.5m €5.67m 294.2 2025
11 Weerwerk 9000 Ghent €6.75m €5.54m €1.84m 205.3 2025
12 IVCE Services 9840 Nazareth-De Pinte €105.6m €49.6m −€18.3m 172.0 2024
13 ATTENTIA, Secrétariat social interprofessionnel Agréé 1082 Berchem-Sainte-Agathe €43.5m €20.7m 771,383 € 114.0 2025
14 SD Worx Sécretariat Social ASBL 2000 Antwerp €3.37bn 467,379 € €21.4m 102.3 2025
15 ISS Reception & Support Services 1000 Brussels €2.54m €6.31m €1.20m 83.4 2025
16 Liantis guichet d'entreprises 1000 Brussels €4.27m €7.90m 604,657 € 77.6 2025
17 Intercommunale Leiedal 8500 Kortrijk €125.6m €10.4m €39.4m 76.2 2025
18 The People Panel 8500 Kortrijk €177.3m €9.64m €148.0m 75.5 2025
19 Paypro Services 1040 Brussels €1.28m — 426,890 € 73.4 2025
20 OZOS - Optimale Zorg door Optimale Samenwerking 3500 Hasselt €38.3m — €21.1m 65.5 2025

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.

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Frequently asked questions

Who is the largest employer in Office administrative and support activities?

Productions Associées, with 1,606.0 full-time equivalents reported (financial year 2025).

How many Office administrative and support activities companies report employees?

423 out of 3,190, in accounts less than 3 years old.

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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 12 Nov 2026.