Occupational Ergonomics: Principles of Work Design focuses on the fundamentals in ergonomics design and evaluation. Divided into two parts, Part I covers the background for the discipline and profession of ergonomics and offers an international perspective on ergonomics. Part II describes the foundations of ergonomics knowledge, including fundamentals of ergonomics, fundamentals of work analysis, and cognitive issues. The authors discuss ergonomics of system design and outline the principles of certification in professional ergonomics. Methods for evaluation of physical workload due to posture (RULA and OWAS), as well as computer-aided human models and other software-based tools for ergonomic analysis and design are reviewed.