Largest employers in Seneffe
101 companies registered in 7180 Seneffe report employees in recent accounts; here are the top 20. DOW Silicones Belgium leads with 440.2 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 assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | DOW Silicones Belgium Manufacture of chemicals and chemical products | €345.8m | €131.8m | €129.3m | 440.2 | 2025 |
| 2 | Etwal - Platteau Infra Civil engineering | €41.3m | €65.3m | €18.0m | 430.4 | 2025 |
| 3 | Doyen Auto Wholesale trade | €143.1m | €151.3m | €28.0m | 229.5 | 2025 |
| 4 | Alysse Food Manufacture of food products | €9.98m | €25.1m | −€41.8m | 199.4 | 2025 |
| 5 | TF Co Manufacture of food products | €9.01m | €26.9m | 910,222 € | 162.8 | 2025 |
| 6 | Vandemoortele Seneffe Manufacture of food products | €11.0m | €17.6m | €6.24m | 139.6 | 2025 |
| 7 | Groupe Atlantic Manufacturing Belgium Manufacture of fabricated metal products, except machinery and equipment | €33.1m | €35.4m | −€18.7m | 129.2 | 2025 |
| 8 | Les Produits Purs de Courcelles Manufacture of chemicals and chemical products | €41.2m | €35.5m | €28.4m | 87.2 | 2025 |
| 9 | voestalpine Böhler Welding Belgium Manufacture of basic metals | €17.6m | €42.8m | €7.03m | 81.2 | 2026 |
| 10 | CAT Benelux Land transport and transport via pipelines | €8.78m | €25.9m | 355,647 € | 66.2 | 2025 |
| 11 | Vervaeke Wallonie Land transport and transport via pipelines | €5.41m | — | €4.39m | 57.2 | 2025 |
| 12 | Residence les Peupliers Residential care activities | €1.02m | — | −778,327 € | 51.1 | 2025 |
| 13 | Telix Pharmaceuticals (Belgium) Manufacture of basic pharmaceutical products and pharmaceutical preparations | €57.1m | €14.9m | 515,466 € | 51.0 | 2025 |
| 14 | A.B.J.V. Office administrative, office support and other business support activities | 182,790 € | — | −73,691 € | 46.0 | 2025 |
| 15 | Bakbel Europe Manufacture of food products | €10.5m | €20.3m | €5.56m | 41.0 | 2025 |
| 16 | aptaskil Education | €17.0m | €1.41m | €9.11m | 38.8 | 2025 |
| 17 | Afisen Retail trade | €5.85m | — | 942,963 € | 34.4 | 2025 |
| 18 | Centre de Ressources Technologiques en Chimie Architectural and engineering activities; technical testing and analysis | €9.46m | — | €5.57m | 30.5 | 2025 |
| 19 | Field Resource Activities of advertising, market research and public relations | €1.38m | — | 755,554 € | 27.1 | 2025 |
| 20 | Domaine de Seneffe - Musée de l'Orfèvrerie de la Communauté francaise Libraries, archives, museums and other cultural activities | 858,243 € | — | 312,008 € | 26.3 | 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.
Frequently asked questions
Who is the largest employer in Seneffe?
DOW Silicones Belgium, with 440.2 full-time equivalents reported (financial year 2025). These jobs may be located outside the municipality.
How many companies in Seneffe report employees?
101 out of 332, in accounts less than 3 years old.
Analyse companies in Seneffe
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.