SD Worx
Founded in 1945 and headquartered in Antwerp, SD Worx has evolved from a Belgian social secretariat into one of Europe's most significant HR and payroll technology platforms. The company serves employers of all sizes, from SMEs to multinationals, across payroll calculation, HR administration, workforce management, and HR analytics.
With over 8,000 employees and operations spanning more than 150 countries, SD Worx competes directly with ADP, Ceridian, and SAP SuccessFactors in the European market. The company has grown substantially through acquisitions, adding payroll capabilities in Germany, the UK, France, and other markets.
SD Worx is one of the largest employers in the Belgian technology-adjacent sector and a foundational institution of the country's HR services industry.
Stated facts & numbers
- WorxInvest officially started on 1 January 2022, created out of the SD Worx holding after the board's September 2021 decision to seek a minority shareholder (CVC). (0:03:03, De CFO Podcast 2025-02-13)
- SD Worx's social secretariat handles social security and withholding tax payments for 80,000 clients, whose client funds WorxInvest's treasury manages. (0:08:11, De CFO Podcast 2025-02-13)
- About 90% of the real estate company's rental income still comes from SD Worx, 10% external; the Greenhouse Collection acquisition is growing the external share. (0:07:10, De CFO Podcast 2025-02-13)
- SD Worx did its first retail bond in 2019, a project Nils was also co-responsible for. (0:15:56, De CFO Podcast 2025-02-13)
- In 2011 SD Worx entered the capital of Protime, when the company had around 100 employees; at that point two-thirds of the capital was no longer held by operational shareholders. (0:26:12, Connexi 2022-10-03)
- Protime is currently launching in all Scandinavian countries, delivering SD Worx workforce management on Protime technology. (0:53:39, Connexi 2022-10-03)
- Siemens has been a Com&Co client for 25 years and SD Worx for 10 years. (0:57:22, Connexi 2022-08-01)
- Jan Laurijssen is 53 and has worked at SD Worx for 15 years. (0:00:07, SuperNova 2026-06-18)
Who works here1
In the media3
Kobe Verdonck explains that SD Worx is one of Europe's leading HR and payroll providers serving over 70,000 companies and 4.5 million employees. He describes the company's decision to sponsor the SD Worx women's cycling team as driven by shared values around teamwork, diversity, and winning together, and notes that he personally enjoys cycling in the region and looks forward to attending races with employees and customers.
Kobe Verdonck discusses how he approaches leadership by comparing the CEO role to that of a sports coach or trainer. He emphasizes the importance of building winning teams by establishing clear frameworks and communication while giving team members freedom to make decisions on the spot, drawing parallels to how football teams operate tactically. He also reflects on key ingredients for team building, including the transition from being a player to becoming a coach, and advises leaders to follow their passion, build strong teams around them, and continue growing without standing still.
Open positions
All 4Azure Tech LeadEngineering and Information Technology · Antwerp, Flemish Region, Belgium · hybridRecruitment consultantSales and Business Development · Boom, Flemish Region, Belgium · hybridBusiness consultantConsulting, Information Technology, and Sales · Antwerp, Flemish Region, Belgium · hybridAdviseur Integrated SupportHuman Resources · Antwerp Metropolitan Area · hybrid