Many service and public employees experience social pressure from customers, clients or the public, which can increase the psychological workload. Measures for improving the social aspects of work mainly involve promotion of open and positive contacts in the workplace, support of the individual's role and identity at work, and encouragement of teamwork. The great variety of occupational health hazards makes quantification of their associated health risks and impacts at the global level very difficult. Some estimates have been based on the occupational injuries and diseases reported in official statistics. But a large number of injuries and diseases caused by workplace hazards are not reported.
Adjustment is therefore necessary.
Due to the changes in occupational distribution with development, many countries have experienced a shift from the hazards that characterize work in agriculture, mining and other primary industries, to those of manufacturing industries or service industries. Following such a shift, occupational injuries and diseases could be expected to fall in number and the severity of those that do occur to be less. But, in fact, new occupational disease problems have emerged, leading to an increased incidence of reported occupational disease in certain developed countries. In addition to the specific workplace hazards discussed above, work and health are associated in other ways, creating possibly even greater impacts on health. Working conditions, type of work, vocational and professional status, and geographical location of the workplace and employment also have a profound impact on the social status and social well-being of workers.