ABSTRACT
Human performance improvement aims to balance work demands with worker abilities and needs. Human performance is often described in terms of health and safety measures with the goal of risk quantification of workplace hazards. Risk, a common assessment parameter in health and safety analysis, quantifies the degree of harm with respect to likelihood (e.g. probability) and severity (e.g. consequences) in response to workplace hazards (Cox and Cox 1993; Manuele 1997). A workplace hazard is defined as an event or situation with the potential for harm (Cox and Cox 1993). Typically, harm has been interpreted as resulting from physical hazards such as those produced by physical task demands (i.e. biomechanical, physiological) and by the environment (e.g. nuclear, radiological, biological, chemical, physical).
