[Health surveillance: from risk presumption to risk assessment]

A working group of the Occupational Medicine and Industrial Hygiene Association of Lombardy, the National Association of Occupational Health Physicians the National Society of Prevention Operators made a paper in order to rationalize the sanitary surveillance, observing the laws in force and following the European Directives. The authors, thinking that everyday experience not very useful health examinations are carried out and that the sanitary surveillance should be planned according to the real working risks, give methodological directives about the way to make the mandatory clinical examinations less frequent, to the firms, to the occupational health physician and to the public occupational health operators of the local health units that must supervise the sanitary surveillance.