Such interventions have been found to improve both the workers' access to the services and the cost effectiveness of the services provided.
The most important features of the international consensus on occupational safety and health are: · a focus on occupational health and safety for all workers irrespective of the sector of the economy, the type of employment (salaried worker or self-employed), the size of the enterprise or company (industry, public sector, services, agriculture and so on) · the responsibility of governments for the establishment of appropriate infrastructures for occupational health practice through legislation, collective agreements or any other mechanism acceptable to the government after consultation with employers' and workers' representative organizations · the liability of governments for the development and implementation of occupational safety and health policy in tripartite collaboration with employers' and workers' organizations · the primary responsibility of the employer for the provision of occupational health services at the enterprise level, who must involve competent occupational health professionals to implement the provisions stipulated by the national legislation or the collective agreements · the prevention of work accidents and occupational diseases and control of workplace hazards as well as the development of a work environment and work conducive to workers' health are the main purpose of occupational health services.The ILO Occupational Safety and Health Convention, 1981 (No. 164), and the ILO Occupational Health Services Convention, 1985 (No. 171), amplified the impact of the ILO in the development of occupational safety and health.By , 40 ratifications of these Conventions had been registered, but their practical impact was much wider than the number of ratifications, since many countries had implemented the principles embodied in these instruments, although they had not been able to ratify them.In many countries, instead of stipulating what might be regarded as programmes, the legislation stipulates the responsibility of employers to provide health risk assessments, health examinations of workers or other individual activities related to workers' health and safety.
More recent laws reflecting international guidelines such as those contained in the ILO Convention on Occupational Health Services (No.
Thus, the international instruments have served as guidelines for the development of national legislation and programmes.