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Arousal
In the general sense, refers to a person’s readiness to perform work.
one hour of high quality sleep is enough for
two hours of activity
Work load is subjective
The employee and their state, such as their - skills / experience / emotional health
The nature of task - physical demands / mental demands (complex decision)
circumstances under which task is performed -
Time available to complete the task (and, therefore, the speed at which the task must be carried out)
Requirement to carry out the task while doing something else
Perceived control of the task (i.e., whether it is imposed by others or under the employee’s control)
Current environmental factors (e.g. extremes of temperature)
TSA - Time Since Awakening
the most critical factor in fatigue-related accidents in all modes of transport.
Time on Task means
“duty time” refers to the time spent working.
managing overload
delegation
requesting extra time
delaying tasks or deadlines or just refusing additional work
house keeping tasks
with underload less attention or care will be given to house keeping tasks
overload
can happen suddenly or gradually - like being forced to remember a large amount of information suddenly
overload / underload
can affect quality of work and safety