Around 6% of workers are involved in maintenance activities on a daily basis. Because they carry out a wide range of different activities, they are exposed to many and varied hazards at work. There are physical hazards (e.g., noise, vibration, excessive heat and cold, radiation, high physical workload), chemical hazards (work with asbestos, welding, exposure to dangerous substances when working in confined spaces), biological hazards (legionella), and psychosocial hazards (poor work organisation). Maintenance workers are also at risk of all types of accidents. Figures from EUROSTAT indicate that around 10-15% of all fatal accidents are related to maintenance operations.