ABSTRACT
There are numerous regulations and standards on prevention of work-related musculoskeletal disorders (WMSDs) affecting millions of workers and workplaces. Almost all of them are based on principles of biomechanics, psychophysics, and physiology with the common goal of designing tasks in the way that the stresses imposed upon the majority of the workforce are below the threshold for fatigue, discomfort and injuries (Ayoub and Dempsey 1999).
