Clasification of ergonomics levels for research

Ergonomics is useful to create a conducive system among people, work facilities, and work environment, so that the task demands are not underloaded or overload. Task demands far greater than the human ability or capacity can cause the impact of overstress, accidents, fatigue, injury, illness, pain and others. Ergonomics studies and intervention can create the system which can be classified into three types, namely macro ergonomics, mesoergonomics and micro ergonomics. This paper will distinguish boundaries among the three types as there are no definite boundaries. The method of study is by focusing on a pre-existing concept in the literature review. The purpose to understand and to classify according to specific variables. A table was constructed to differentiate them. Macro ergonomics was found to be more to broad such as production system as a work organization. Micro ergonomics approach is aimed at a specific process. Mesoergonomics is in-between and encompasses relationships between individuals and organizations and sociotechnical systems.