The Human Factors Accident Causation Theory

This theory is based on the assumption that accidents occur due to a chain of events caused by human error. It consists of the following major factors that lead to human error [1,2,20]  

Overload. This is concerned with an imbalance between the capacity of a person at any time and the load he/she is carrying in a specified state. The capacity of a person is the product of factors such as stress, fatigue, natural ability, state of mind, degree of training, and physical condition. The load carried by a person is composed of tasks for which he/she has responsibility along with additional burdens resulting from environmental factors (e.g., distractions, noise), internal factors (e.g., personal problems, worry, emotional stress), and situational factors (e.g., imclear instructions, level of risk). 

Inappropriate activities. These activities performed by a person can be the result of human error. For example, the involved person 

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Describe the human factors accident causation theory. 

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