Social firms are companies on the general labour market which provide employment to people with severe disabilities. In this setting different job resources are offered for its employees, including social support or flexibility in terms of working hours, tasks or pace of work. However, to date, only limited evidence exists on the work and health situation of supervisors in social firms. Therefore, the study aims to explore job demands and resources of supervisors in social firms to increase knowledge in a little researched field and to develop recommendations for action on workplace health promotion.