Managing Fatigue at Work in Australia: A WHS Guide

Fatigue is a work health and safety issue when tiredness makes a task less safe or harms a worker's health. It can arise from long or irregular hours, demanding work, disrupted sleep, night shifts, travel, inadequate breaks or a combination of these. A person may feel able to continue while attention, judgement or reaction time has already deteriorated. The practical question for an employer is how the work is designed and controlled, not simply whether an individual says they feel tired.

This guide covers fatigue in general Australian workplaces. Heavy-vehicle operations also have specific fatigue obligations under the Heavy Vehicle National Law. Transport operators should use the existing heavy-vehicle fatigue records guide and check National Heavy Vehicle Regulator guidance for that separate regime. This page does not give a universal safe shift length or replace an industry-specific rule.

Start with the law that applies where work happens

Under implemented model WHS laws, a person conducting a business or undertaking has a primary duty to ensure health and safety so far as reasonably practicable. Fatigue can be a risk within that duty. Safe Work Australia explains that the model WHS laws have been implemented in jurisdictions other than Victoria, with local variations. Victoria uses its own occupational health and safety legislation. Commonwealth, state and territory regulators administer the operative law. A business working in several jurisdictions should therefore confirm each local rule and any sector-specific fatigue requirement.

The Safe Work Australia model Code of Practice on managing fatigue, published in September 2025, offers practical guidance. A model code does not automatically have legal effect everywhere. It must be approved in a jurisdiction as a code of practice, and even an approved code is guidance on ways to meet WHS standards rather than a stand-alone guarantee of compliance. Check your regulator's current code list. The broader risk-management and consultation duties remain relevant regardless of whether the particular model fatigue code has been adopted locally.

Identify where fatigue may be created or amplified

Do not begin with a generic statement that all employees must get enough sleep. Examine the work system. Look for long shifts, early starts, late finishes, consecutive nights, unpredictable overtime, short breaks between shifts, on-call duties, high physical or mental load, monotonous monitoring and long travel after a shift. Consider heat, noise, poor lighting and tasks requiring sustained vigilance. Ask whether workers feel able to report fatigue without punishment or loss of work.

Review normal operations and the less visible exceptions. A planned roster might be reasonable until an equipment failure keeps a team late and the same team is expected back early. Emergency response, a peak-season schedule or a delayed contractor can alter exposure quickly. Managers need a route for changing the plan when the work differs from the assessment.

Consult workers and health and safety representatives where applicable. The Safe Work Australia fatigue risk guidance places consultation within identifying, assessing, controlling and reviewing risks. Workers can explain which parts of a shift are most demanding, whether breaks are practicable and how rosters affect recovery. Their views are evidence for the assessment, not a transfer of responsibility to them.

Assess risk in the actual task

The same level of tiredness can have different consequences in different work. Compare a low-risk administrative task with driving, operating plant, administering medication, working at height, supervising children or responding to an emergency. Identify when an error could harm the worker, colleagues or the public. Assess how often the task occurs, how demanding it is, what supervision exists and how easy it is to pause safely.

Look at patterns rather than one shift in isolation. Consecutive nights, rotating rosters, overtime after a full shift and repeated short recovery periods can compound fatigue. Temporary staffing gaps can make a supposedly exceptional arrangement routine. Incident and near-miss reports, absence trends, worker feedback and overtime records may reveal a problem, but absence of reports is not proof that risk is controlled.

Do not impose a single numerical 'safe' shift length across every workplace from this article. The SWA guidance takes a risk-based approach, and sector-specific law may prescribe additional limits. Record the schedule and task factors you considered, the controls selected and why they suit the work. Where medical information is involved, handle it confidentially and avoid turning a WHS assessment into an unsupported diagnosis of an individual worker.

Change the work before relying on alertness reminders

Work design is usually a stronger control than telling people to recognise fatigue. Consider whether hours, shift timing, task allocation, staffing or production deadlines can change. Schedule demanding or hazardous tasks when attention is more likely to be sustained. Avoid making a worker finish an extended shift and then return after inadequate recovery. Provide breaks that can actually be taken, with enough cover and a suitable place to rest. Check the impact of travel, especially after night work or a remote-site shift.

Where a long shift cannot reasonably be avoided, review additional controls. Breaks, task rotation, more supervision, a second person for a critical task, changed pace or deferring non-urgent hazardous work may reduce risk. None is automatically sufficient on its own. A coffee break, training session or fatigue poster cannot substitute for a roster that allows recovery. The SWA risk-management examples distinguish working-hours design, workload, environment and training as possible measures to assess in context.

Give supervisors authority to pause or reallocate work when fatigue is reported or observed. State who receives the report, what immediate decision can be made, how transport home is considered if necessary and when the worker can safely resume. A policy that says 'report fatigue' but leaves no alternative staff or deadline flexibility can discourage honest reporting.

Make a usable fatigue management procedure

A proportionate procedure should say where fatigue risks arise, who owns rosters and work allocation, how workers are consulted, how a concern is raised, what immediate steps are possible and how the risk assessment is reviewed. It should fit the site's ordinary workflow. Avoid copying an industry's numerical limits into another setting without checking whether they apply.

For shift work, keep the current roster and a record of material changes. For high-risk tasks, show how fatigue was considered alongside the task assessment. Supervisors need clear escalation instructions for unplanned overtime, on-call work, a worker's self-report or a near miss that may involve fatigue. Records should be enough to show decisions and follow-up without collecting more personal health information than is necessary.

Train people on the procedure they will actually use. Explain why fatigue matters for their tasks, what signs to report and whom to contact. Training is helpful, but a worker cannot always recognise their own impairment accurately. Design the system so the supervisor and organisation can respond. Contractors and labour-hire workers may have schedules outside the host's view; coordinate with the other duty holders rather than assuming a site induction covers recovery time.

Review whether controls work

Review after incidents, near misses, roster changes, extended overtime, a new task, worker feedback or changes in staffing. Compare what was planned with what happened. Were breaks taken? Did a fatigue report lead to a safe alternative? Did overtime recur often enough to become foreseeable? Did the control create a different risk, such as sending someone on a long drive after a night shift?

The assessment is not a once-only document. SWA describes four connected steps: identify, assess, control, then review and monitor. Ask workers whether the controls are practical. If a measure fails, revise the work design and communicate the change. Keep the record of the decision and the reason, especially where hazardous work continued under altered conditions.

General WHS fatigue and heavy-vehicle fatigue are different questions

Some employers have both ordinary workplace fatigue risks and heavy-vehicle obligations. The latter has a specialist statutory scheme, regulated hours and Chain of Responsibility duties in relevant operations. The NHVR regulatory advice should be used for those questions. A general WHS roster review does not establish HVNL compliance. Conversely, meeting a transport record requirement does not settle every fatigue risk in a warehouse, workshop or office.

For a general WHS programme, start with the tasks and roster that create risk, consult the affected people, change controllable conditions and review what happens in practice. If you are evaluating systems to organise broader WHS work, see Complys WHS compliance software. Confirm the functions you need through a product demonstration; this guide makes no claim that software diagnoses fatigue or determines whether a person is fit for work.