ESSEC is affiliated with the Chamber of Commerce and Industry of Versailles Val d'Oise-Yvelines, the largest French Chamber of Commerce after that of Paris. The Supervisory Board and Board of Directors manage the School.

 The History of ESSEC - 100 years of business education

The Board includes 6 representatives of the Chamber of Commerce and Industry of Versailles Val d'Oise-Yvelines, 2 members of the Institut Catholique de Paris, 5 alumni, 1 member of the French association for small and medium-sized companies (CGPME), 4 students, 5 professors, and 2 elected members of the administration. Gilles Pelisson is currently President of the Board of Overseers.

The Board of Directors comprises four members: Bruno Bouniol and Marc Milliotte, representatives of the Chamber of Commerce and Industry of Versailles Val d’Oise-Yvelines ; Bernard Pouy, representative of the ESSEC Alumni Association, and Guy La Tour, who has Qualified Person status.