See your snapshot

Real-time Fatigue Risk Assessment

Fatiguefit4Duty

Structured assessment at the point of duty, combining the sleep a person actually got in the last 24 and 48 hours with how alert they feel now.

Express interest Learn more
A Fatiguefit4Duty result on a phone: John’s estimated fatigue likelihood is Possible, with his fatigue-related error risk over the next 24 hours if he gets no further sleep.
Risk & Safety solution

The problem

A compliant roster can still put a fatigued crew to work

The operational predictor of fatigue impairment is prior sleep and wake history, not hours on duty. Hours-of-service rules cannot see the night someone spent with a sick child or the sleep disorder nobody has diagnosed.

Fatiguefit4Duty asks, at the start of duty, the questions that do predict impairment, and puts the answer in front of the person who has to make the call.

How do you know your employees are fit to start work? Watch the video · 1:45
Presented by Professor Drew Dawson

The size of the problem

National figures for New Zealand, from published research. They are modelled, not measured in your workforce.

  • 27%get less than 7 hours' sleep2024/25
  • 13%of workplace injuries are linked to sleep problems2014
  • NZ$2,305lost productivity per affected employee each year
Sources
  1. Ministry of Health NZ. Meeting sleep guidelines 2024/25: New Zealand Health Survey, 2026.
  2. Uehli K, et al. Sleep problems and work injuries: a systematic review and meta-analysis. Sleep Medicine Reviews, 2014.
  3. Rosekind MR, et al. The Cost of Poor Sleep: Workplace Productivity Loss and Associated Costs. Journal of Occupational and Environmental Medicine, 2010;52(1):91-98, applied to average earnings in New Zealand (Stats NZ Quarterly Employment Survey, June 2026 quarter).

Stories

When no one checked who was fit for duty

Published cases from New Zealand where people started or kept working without enough sleep, and fatigue was never measured or treated as a hazard.

  • Nov 2017 · New Zealand

    Truck driver over work-day limit without required rest jailed after van crash kills one, injures five

    • Safety
    • Legal
    • Financial

    On his fifth day with a new transport employer, a double-trailer truck driver who had exceeded the 13-hour work-day limit and had not taken the required 10 hours' continuous rest collided with a van carrying six people at about 9pm. One passenger was killed and five were injured, two airlifted to hospital. He also admitted falsifying his logbook, and the judge called him a menace to the trucking industry and an accident waiting to happen.

    Case NZ-transport-07Report an issue

See all fatigue news

How it works

A fitness-for-duty check at the start of the shift

Each person records the sleep they actually got in the last 24 and 48 hours and how alert they feel now. That covers two levels of defence at once: whether the sleep was obtained, and whether fatigue is showing at work. Elevated risk goes to the leader with the controls you have set for the role and task, before the work starts.

  1. Step 01

    Prompt

    A supervisor prompts the assessment at the start of duty. Around thirty seconds, on a phone, and it works offline.

    A Fatiguefit4Duty assessment starting on a phone: which tasks are you doing today (wildfire suppression), how much sleep in the last 24 and 48 hours, and when did you wake.

  2. Step 02

    Sleep and alertness

    Prior sleep in the last 24 and 48 hours, time awake, and current sleepiness on the Karolinska Sleepiness Scale.

    Fatiguefit4Duty asking about sleep in the last 24 and 48 hours, wake time and start time, with answers chosen from a list.

  3. Step 03

    Risk indication

    Likelihood from prior sleep and wake history, combined with a consequence rating assigned by role, in an ISO 31000 calculation.

    A Fatiguefit4Duty result on a phone: Stop, the assessed fatigue risk right now is High, with mandatory reporting to the responsible manager and controls such as extra breaks and a safety buddy.

  4. Step 04

    Shown to the leader

    The result goes to the team leader or safety manager, with the role- and task-based controls you have configured. The decision stays with you.

    A Fatiguefit4Duty result for a fire-fighting crew member: Stop, the assessed fatigue risk right now is Extreme for the next 24 hours, with the actions to take and a Tell the Boss button.

Most workplaces check whether someone is fit for duty without asking how they slept. A roster can’t see a night with a sick child. Thirty seconds at the start of a shift asks, and puts the answer in front of whoever makes the call.

Daniel PlattCo-founder and CEO

Rollout

How we roll it out

  1. Scope

    Agree the roles in scope and a consequence rating for each.

  2. Configure

    Set the controls for each band and who sees each result.

  3. Train and launch

    Supervisors learn to prompt the assessment and act on the result.

  4. Review

    Aggregate reporting by cohort, location and craft, and tune the controls.

What the client sees

Who sees what

Unlike Sleepfit, this result is not private to the worker: it exists to inform a control decision at the start of duty. Band thresholds and their derivation are published to you.

Priced on prevalence, not headcount. How pricing works.

  • The worker

    Answers about their own sleep

    • The thirty-second assessment, on a phone

  • Team leader or safety manager

    The risk indication, by design

    • Each person’s risk indication at the start of duty
    • The role- and task-based controls you configured

  • The employer

    Patterns across the operation

    • Aggregate reporting by cohort, location and craft
    • Band thresholds and how they were derived

Evidence

What we can show

The likelihood limb rests on prior sleep and wake history, the best-evidenced individual fitness-for-duty input available.

The approach follows the published fatigue risk management literature (Dawson & McCulloch, 2005; Dawson & Sprajcer, 2020). The scoring, bands and thresholds are our own, and no validation study is claimed for them.

What it does not establish

It produces a risk indication at role and task level. It does not make a fitness-for-duty determination, does not diagnose, and does not clear or stand down an employee. That decision stays with you, under your own procedure. It is a defensible method, not a validated instrument, and we do not describe it as one.

FAQs

Questions we’re often asked

Does it decide whether someone can work?

No. It gives a risk indication at role and task level, shown to the team leader or safety manager with the controls you have configured. It does not clear or stand down an employee: that decision stays with you, under your own procedure.

How long does it take, and does it need a signal?

Around thirty seconds on a phone at the start of duty, and it works offline.

What does it ask?

The sleep a person got in the last 24 and 48 hours, how long they have been awake, and how sleepy they feel now on the Karolinska Sleepiness Scale, combined with a consequence rating set for each role.

The science

Is it a validated instrument?

No, and we don’t describe it as one. It follows the published fatigue risk management literature, but the scoring, bands and thresholds are our own and no validation study is claimed for them. The thresholds and how they were derived are published to you.

The science

Who sees an individual’s result?

The team leader or safety manager, by design: the result exists to inform a control decision at the start of duty, so it is not private to the worker. You also get aggregate reporting by cohort, location and craft.

Trust and security Privacy policy

Can someone delete their account?

Yes. Anyone can ask for their account and its personal data to be deleted; the steps are on its delete-account page. Deletion can’t be undone.

Delete an account

Pathways

Where to go next

Fatiguefit4Duty and regulation across 33 industries in New Zealand

5 / 33

Supports a named obligation

23 / 33

Supports your general duty of care

5 / 33

A voluntary benefit, not a regulatory requirement

See how Fatiguefit4Duty fits the regulation in your industry, and what else we would start with there.

All 33 industries

Other solutions interconnected with Fatiguefit4Duty

Level 2

Sleepfit

Measure the sleep health behind repeated elevated results and identify who may benefit from clinical evaluation.

Supports Levels 2 and 3

Awareness eLearning

Teach crews and supervisors to recognise fatigue in themselves and each other.

Level 5

Was It Fatigue?

Investigate properly when something does go wrong.

Interested in Fatiguefit4Duty for your organisation?

Tell us a little about your organisation and which solutions you’re looking at, and our team will be in touch.

Express interest See your workforce snapshot
A Fatiguefit4Duty result on a phone: John’s estimated fatigue likelihood is Possible, with his fatigue-related error risk over the next 24 hours if he gets no further sleep.