This book covers the application of the OCRA (Occupational Repetitive Actions) method. The methods make up a system dedicated to the analysis and management of the risk of biomechanical overload of the upper limbs. The book focuses on the OCRA checklist which presents various models from the most simplified, to the most complex. It describes methods, criteria, procedures and tools on how to perform such an assessment, in line with international standards. The book provides you with the correct methods and tools for prevention of upper limb work related musculoskeletal disorders no matter what the working environment is or what the international standards dictates.