They take part in commenting procedures concerning management documents, debates over OSH issues, comprehensive reviews, investigation of workplace injuries, etc. Workplaces and Occupational Activities Having a High Incidence or High Risk of Specific Diseases Job categorization is regulated in Czech legislation by Act No. on the protection of public health and on amendment to some related acts, and Decree No. 432/2003 Sb., specifying conditions for job categorization, limit values for biological exposure indices, conditions for biological sampling for biological exposure tests, and the particulars of reporting of work with asbestos and biological factors.