Largest employers in Olen
224 companies registered in 2250 Olen report employees in recent accounts; here are the top 20. Aurubis Olen leads with 704.0 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 assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Aurubis Olen Manufacture of basic metals | €1.31bn | €4.19bn | €976.0m | 704.0 | 2025 |
| 2 | Casa International Retail trade | €95.9m | €141.1m | €20.4m | 368.0 | 2024 |
| 3 | Nippon Sanso Belgium Manufacture of chemicals and chemical products | €238.1m | €174.1m | €183.4m | 279.3 | 2026 |
| 4 | DCA Construction of residential and non-residential buildings | €175.8m | €75.0m | €15.6m | 229.0 | 2024 |
| 5 | Flamingo Pet Products Wholesale trade | €45.9m | €61.3m | €21.1m | 170.9 | 2025 |
| 6 | Casa Logistics Warehousing, storage and support activities for transportation | €12.3m | €8.77m | €8.43m | 157.6 | 2024 |
| 7 | The Belgian Chocolate Group Manufacture of food products | €23.6m | €61.9m | €7.93m | 140.3 | 2026 |
| 8 | Plukon Convenience Olen Manufacture of food products | €24.1m | €69.4m | €11.2m | 139.6 | 2025 |
| 9 | Olense Vleeswaren Industrie Manufacture of food products | €26.5m | €28.2m | €14.4m | 111.0 | 2025 |
| 10 | Beneens bouw en interieur Construction of residential and non-residential buildings | €19.5m | €40.3m | €4.41m | 106.9 | 2025 |
| 11 | Havi Logistics Wholesale trade | €29.3m | €192.5m | 761,068 € | 104.1 | 2025 |
| 12 | Buchen Industrial Services NV Services to buildings and landscape activities | €14.4m | €23.7m | −€3.46m | 99.4 | 2025 |
| 13 | EcoWater Systems Europe Manufacture of machinery and equipment n.e.c. | €15.9m | €18.6m | €13.3m | 98.3 | 2025 |
| 14 | Jacobs Services to buildings and landscape activities | €10.2m | €20.3m | €1.97m | 97.1 | 2024 |
| 15 | Novatech International Wholesale trade | €17.7m | €43.5m | €9.57m | 88.6 | 2025 |
| 16 | Guenther Bakeries Belgium Manufacture of food products | €21.9m | €26.9m | €18.3m | 84.4 | 2026 |
| 17 | Taura Natural Ingredients Manufacture of food products | €44.8m | €57.4m | €36.7m | 77.2 | 2025 |
| 18 | Intersoft Electronics Wholesale trade | €16.3m | €15.8m | €1.68m | 70.5 | 2025 |
| 19 | Jackon Insulation Manufacture of rubber and plastic products | €16.9m | €25.9m | €9.99m | 62.9 | 2025 |
| 20 | Tops Foods Manufacture of food products | €19.3m | €31.3m | €11.0m | 60.4 | 2025 |
Headcount reported by the company for all its sites: the jobs may be located elsewhere.
Frequently asked questions
Who is the largest employer in Olen?
Aurubis Olen, with 704.0 full-time equivalents reported (financial year 2025). These jobs may be located outside the municipality.
How many companies in Olen report employees?
224 out of 696, in accounts less than 3 years old.
Analyse companies in Olen
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 12 Nov 2026.