Occupational health services have developed rapidly in Finland since the agreement between the most important labor market organizations was signed in 1971. At present, approximately one million of the total work force of 2.2 million workers have access to occupational health services. Nevertheless, there are considerable differences in the coverage of services between different industries on one hand and between small and large workplaces on the other. The mining industry has the best coverage of occupational health services, and agriculture and the construction industry the worst. While most big enterprises have a well-organized occupational health system, most of the small ones remain without any such services today.