The Occupational Health & Safety and Environmental Protection (HSE) Unit is the driving force behind CERN Safety Policy. A corporate and preventive Safety culture is promoted. In its role as the Organization’s centre of competence in matters of Safety, the HSE Unit provides support to all parts of the Organization. Meeting CERN's Safety objectives requires the Unit to adopt a highly service oriented approach for both the radiological and conventional safety domains. Complementing its internal duties the HSE Unit coordinates CERN's HSE matters with the respective host states bodies.