He has been consultant to the EU Commission, World Bank and IFC; a member of the corporate governance commission of the Brussels Stock Exchange and chairman of the SLIM working party (Simpler Legislation for the Internal Market)[5] on the 1st and 2nd directive.
Wymeersch has been an adviser to the Belgian Government - as member of the Legislative Branch of the Council of State.
He was a member of the supervisory board of the National Bank of Belgium and the Belgian Corporate Governance Commission.
Additionally, Mr Wymeersch has been a member of the Beirat of the Max Planck Institute for Comparative and International Private Law in Hamburg and a member of the editorial or advisory boards of several Belgian and European law reviews.
He has published widely[7][8] on securities regulation, companies law and corporate governance.