The ILO activity Health Services Convention (No. 161) defines "occupational health services" as services entrusted with basically preventive functions and chargeable for advising the leader, the staff and therefore their representatives within the enterprise on the wants for establishing and maintaining a secure and healthy operating atmosphere which can facilitate best physical and mental state in regard to work and the adaptation of labor to the capabilities of staff within the light-weight of their state of physical and mental state. Provision of activity health services means that finishing up activities within the geographical point with the aim of protective and promoting workers' safety, health and well-being, likewise as up operating conditions and therefore the operating atmosphere. These services are provided by activity health professionals functioning on an individual basis or as a part of special service units of the enterprise or of external services. Activity health observes is broader and consists not solely of the activities performed by the activity health service. it's multidisciplinary and multisectoral activity involving additionally to activity health and safety professionals alternative specialists each within the enterprise and outdoors, likewise as competent authorities, the employers, staff and their representatives. Such involvement needs a well-developed and well-coordinated system at the geographical point. The mandatory infrastructure ought to comprise all the executive, structure and operative systems that are required to conduct the activity health observe with success and guarantee its systematic development and continuous improvement.