Introduction. Brief Notes on Analysis of the Work Process in Companies: From Macro to Micro Analysis of Jobs and task as the Basis for the Study of Workers Exposure. Preliminary Hazard and Risk Identification and Evaluation. The Basic OCRA Checklist: Contents, Application Procedures, and Risk Classification. Variants of the OCRA Checklist. Evaluation of Task Rotations. Mapping the Risks from Biomechanical Overload of the Upper Limbs: Criteria, Procedures, and Aims. Analyzing Complex Jobs (with Repetitive Tasks): Applicative Examples. The OCRA Index. Health Surveillance. Guidelines for (RE) Design of Manual Repetitive Tasks and Workplaces and Criteria for the Relocation of Workers Suffering from Work-Related Musculoskeletal Diseases (WMSDs)