The Employer must provide the assessment of the chemical risk in the activities involve for workers the risk of exposure to chemical agents. The evaluation reported in this paper is an estimated assessment based on the guidelines for chemical risk assessment published by the Piedmont Region. Were evaluated the level of exposure, the gravity intrinsic potential of the chemical agent and the duration of the exposure. The product of the three counters deriving from the evaluation of the respective risk factors leads to a synthetic RISK INDEX, expressed in a numerical scale varying between 0 and 100, which is empirically segmented into such distributed risk classes. The chemical risk can be irrelevant or not-irrelevant; if the risk to workers’ health proves to be “not irrelevant” there is an obligation on the part of the Employer to arrange for health surveillance, as well as other measures envisaged by articles 225, 226, 229 and 230 of Legislative Decree 81/08. The risk assessment must be done subdividing worker in homogeneous groups.
KEY WORDS: assessment, chemical risk, chemical substance, work, worker.