The present book debates current issues of Occupational Health and Safety Management in the context of ensuring industrial security and secure place of work in economical environment.The book discusses the following issues: Essential information on Occupational Health and Safety, General Requirements on Occupational Health and Safety, Work Accidents and Occupational Diseases: comunication, research and record keeping, Safety and Health Signs at Workplace, Prevention and Protection Activities, Methodologies for Assessing/Auditing Professional Risks and Assessing/Auditing Models on 400/220/20 kV Power Substation. We hope that this book will be useful to all specialists from Occupational Health and Safety Management domain to respect safety measures to all workplaces.