Dick Heederik is since 2002 professor Health Risk Analysis at the Institute for Risk Assessment Sciences at Utrecht University and chairman of the board of Lexces, the national expertise centre for substance-related occupational diseases and chairman of the Committee for the List of Occupational Diseases of the Ministry of Social Affairs and Employment. 

Lexces pools knowledge and expertise in the area of hazardous substances and health risks for workers. In this way, we contribute to the prevention and assessment of occupational illnesses, with the aim of creating a future in which people no longer become ill from substances they are exposed to in the workplace.