About
Derk Jan is a management consultant at Empact with decades of experience as a director and manager. He helps organisations develop an ESG strategy and turn it into concrete programmes and projects, with a focus on the VSME, the voluntary standard that helps SMEs answer sustainability data requests from customers that report under the CSRD. With Martin de Jong and Jeroen Scheepmaker he guided Ducky Dons, a Dutch maker of down duvets and pillows and one of the first SMEs to work with the VSME, through its VSME report, including a materiality assessment and a full carbon footprint.
Firm
EEmpact
ESG and CSRD consultancy
Capabilities
Related experts
EmpactFirm
ESG and CSRD consultancy
Empact is a boutique ESG consultancy in Haarlem, the Netherlands, advising companies and public organisations on the CSRD. Its work covers double materiality assessments, CSRD reporting and ESG strategy. Empact guided Delta Electronics EMEA for two years on its first CSRD report, including the double materiality assessment and an ESG data platform for 109 entities, and supported OTTO Work Force and Cyclomedia on their first sustainability reports under the CSRD. Other clients include CBS (Statistics Netherlands). For SMEs in the value chain of CSRD reporters, Empact works with the VSME.
Mark van Loon
Senior Consultant
Mark has spent decades in international executive and management roles, mainly in building materials and industry. For five years he was Senior Vice President Sustainability & Innovation at Wienerberger, where he worked on the international ESG strategy, reporting and innovation programmes. With Empact he helps organisations connect sustainability to business strategy, innovation and decision-making.
Martin de Jong
Founder and Managing Director
Martin founded Empact, a boutique ESG consultancy in Haarlem, and has worked as a CSR manager and sustainability professional since 2006. He advises companies and public organisations on the CSRD, with a focus on strategy. Together with Anne Rademaker he supported OTTO Work Force on its first sustainability report under the CSRD, published in 2025, and both now work with Delta Electronics EMEA on its next CSRD report. Martin is also a part-time lecturer at the University of Amsterdam.
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