[The Human Model, a tool for assessing preventive ergonomic postural appearance]

D.Lgs. 81/08 requires the employer to design work systems, methods and tools in accordance to the ergonomic principles. In order to check the compliance of the design with current regulation, it is appropriate and effective to make use of simulation tools since the design phase. The paper describes a tool based on multi body approach. Once the gender and the anthropometric percentile of the worker have been specified, the tool simulates the postures that the worker is likely to assume during the execution of the work task. The tool can be used in the design as well as in the re-design phase, taking into account the different percentile of workers for a proper accommodation of the same.