Company arrangements are established so that tasks are developed with Fatigue specific processes that apply to minimise the potential fatigue effects on workers. Job design considers people and aims to achieve a state of eustress. That is, tasks are sufficiently challenging to be engaging and are matched to the capabilities of the deployed worker(s):
Period at work: < 10 hours low to medium, < 12 hours medium, > 12 hours high. Caused by: * Supervisor attendance for shift handover. * Long staff hours including travel commitments. Consider long staff hours and include their travel commitments:
Frequency of breaks during work. Adequate and regular breaks low. Infrequent or no breaks high:
Repetition of tasks that require little concentration lead to distraction. Varying task demands with low physical or mental requirements lead to loss of concentration:
Highly repetitive work and/or high concentration work (e.g. related to a safety critical task), with high demands over an extended period of time high. This can also include inappropriate supervisory pressure (real or perceived) which increases the stress of workers:
Minimal physical demands low that are intermixed with highly physically demanding work that results in muscle fatigue high. Sustained complex mental and physical effort – high:
Long periods of high concentration and/or mentally demanding work high fatigue hazard. Sustained complex mental and physical effort – high fatigue hazard:
Workers under pressure experience an increased cognitive load, leading to a higher potential for fatigue related distraction:
An incident/accident on site leads to workers involved in first (or subsequent) response being exposed to long work duration in a high stress situation: