ABSTRACT
There has been previous research on a large number of workplace hazards. These include those arising from the psychosocial environment as well as those due to working hours and physical agents. For the most part the nature and effects of these are considered in isolation. This is not often representative of the real-life situation where employees are likely to be exposed to multiple hazards (e.g. noise, shiftwork, organic solvents). There is limited information on the combined effects of these hazards on health and performance efficiency. Indeed, there have not even been any systematic reviews of the existing literature, no attempt to produce a coherent framework for studying these factors, and a dearth of studies using multi-methods to investigate the topic.
