The International Commission on Occupational Health (ICOH) is an international non-governmental professional society, founded in Milan during the Expo 1906 as the Permanent Commission on Occupational Health.
ICOH aims at fostering the scientific progress, knowledge and development of occupational health and safety in all its aspects. Today, ICOH is the world's leading international scientific society in the field of occupational health with a membership of 2,000 professionals from over 100 countries and is recognised by the United Nations as a non-governmental organisation (NGO) with close working relationships with ILO, WHO, UNEP and ISSA.