Managing Fatigue

Compiled by Rudi Nieuwoudt

Construction Safety

Fatigue can be caused by work-related factors, factors outside work and/or a combination of both, and may become worse over time.

Causes of Fatigue

Some Work Related Factors that can cause Fatigue

Poor Work Scheduling and work planning

Length of Time Worked

Long periods of Time Awake

Mentally of physically

demanding work

Length of Shift

Not enough recovery time between shifts

Harsh Environmental

Conditions

Not enough rest breaks

Some Factors outside work that cause fatigue

Poor Quality of Sleep

Social Life/Late Night Parties and Alcohol

Travel Time to and from work.

Sleep Loss

Family Needs

Sleep Disorders.

Slower reactions

Forgetfulness

Absent-mindedness

Lack of attention

Underestimation of risk

Reduced coordination

The effects of fatigue on health and work performance can be short term and long term. Short-term effects on an individual include:

Effects of Fatigue

Slower reactions

Absent-mindedness

Lack of attention

Japan – in 2004, a drowsy skipper ran his 498 ton freighter into houses on shore while the autopilot was on. Homes were damaged but fortunately only one person was injured

Why is addressing fatigue important?

So what can we do about it?

Fatigue must be managed, like any other hazard.

It is important not to underestimate the risks of fatigue.

The legal duty is on employers to manage risks from fatigue, even if the worker is willing to work extended hours.

Employees also have a duty to ensure that they are fit for work – well rested, adequate sleep.