In today's world the agricultural sector employs half of the world's labour force with an estimated 1.3 billion workers active in agricultural production worldwide. The majority of agricultural workers are found in developing countries. A great majority are small scale farmers. They have been more often victims rather than beneficiaries of the green revolution, the technological development and the globalization trends which characterized the 20th century.Agriculture is one of the three most hazardous sectors of activity, both in industrialized and developing countries. According to estimates from the International Labour Office (ILO), some 170,000 agricultural workers are killed each year. This means that workers in agriculture run at least twice the risk of dying on the job as compared with workers in other sectors. Agricultural mortality rates have remained consistently high in the last decade as compared with other sectors, where fatal accident rates have decreased. Millions of agricultural workers are seriously injured in workplace accidents with agricultural machinery or poisoned by pesticides and other agrochemicals. Furthermore, due to the widespread under-reporting of deaths, injuries and occupational diseases in agriculture, the real picture of the occupational health and safety of farm workers is likely to be worse than what official statistics indicate.