Given its interdisciplinary nature, the interuniversity master's degree in Occupational Health and Safety is organised by the Universitat Politècnica de Catalunya (UPC), the Universitat de Barcelona (UB) and the Universitat Pompeu Fabra (UPF). It is aimed at university graduates who are interested in occupational risk prevention and health and safety at work and who meet the administrative requirements and have the required qualification. Since 1995, Occupational Risk Prevention Law 31/1995 and Royal Decree 39/1997 oblige companies to have health and safety resources that are organised as internal or external services that employ accredited technical staff.