All personnel, including the MAPNA Group’s employees and the contractors, are responsible for HSE performance in the MAPNA Group. The successful implementation and supervision of the HSE management system is one of the responsibilities of the organization and requires the active participation of managers and experts at all levels. This is an issue to be considered when organizational structure is being designed and resource allocation is being conducted. In order to implement the MAPNA Group’s HSE Management System more successfully, the MAPNA Group’s organizational structure has been designed in such a way as to reflect organizational roles, duties, responsibilities, options and interaction between departments. Figure 5 presents the HSE processes at work at the MAPNA Group.