Managing the Effects of Shift Work

Who is this course for?

It is for New Zealand shift workers across logistics, manufacturing, healthcare, security and any operation that runs around the clock, and for the supervisors and managers who build rosters and look after those teams.

It is practical and honest, built for real shift patterns rather than ideal ones, so the strategies actually fit the way people work.

What the course covers

Short, practical lessons for shift workers and the people who manage them.

Why New Zealand has no legal limit on your hours, and what that means for you

People often assume there is a rule somewhere capping how long a shift can run. Outside transport, where drivers have specific work time limits under land transport law, there is no general legal limit on hours of work in New Zealand.

That sounds like freedom. It is closer to the opposite. Because no rule sets the boundary, the whole thing falls back on the duty under HSWA 2015 to ensure health and safety so far as is reasonably practicable. And health includes fatigue. There is no line you can point at and say you stayed the right side of it. You have to be able to show you thought about it.

WorkSafe's actual numbers, which most rosters have never been checked against

WorkSafe's shift work guidance is more specific than most people expect. It is worth holding your roster up against it:

• Eight hours is the ceiling WorkSafe suggests for work that is monotonous, demanding or done in isolation.
• Twelve-hour shifts raise fatigue risk, and the increase is sharpest at night.
• Beyond twelve hours should be avoided.
• Two to three is the limit WorkSafe puts on consecutive twelve-hour night shifts.
• Forward rotation where practicable, meaning morning to afternoon to night rather than backwards.
• Permanent night shifts should be avoided if reasonably practicable. WorkSafe describes night work as extremely disruptive, because it takes sleep away and puts the body clock out of step at the same time.

If your roster breaks one of these, that is not automatically a breach. It is a question you should have a documented answer to.

The part that gets missed: rest is not the same as time off

A gap between shifts is not recovery time. It is commuting, childcare, a meal, and whatever is left. WorkSafe's framing is that the break has to allow enough good quality sleep, not merely enough hours. Eleven hours off sounds generous until you subtract an hour each way on the road and a family that keeps daytime hours.

This is why fatigue rarely shows up as one bad decision. It shows up as a slow drift in judgement that the person experiencing it is the least able to notice.

What a defensible fatigue position looks like

WorkSafe's expectations of an employer here are fairly clear, and none of them are expensive:

1. A fatigue risk assessment that involved the people actually working the roster, not just the person who wrote it.
2. A fatigue policy that says what someone should do when they are too tired to work safely, and what will happen when they say so.
3. Training at every level, including managers, because a supervisor who treats tiredness as a character flaw will undo the policy in a week.
4. Monitoring through incident reports and worker feedback, so you find out before the near miss becomes something else.
5. A reporting culture with no retaliation. If admitting fatigue costs someone shifts, nobody will admit it.

That last one is the whole thing. Every other control on this list depends on a worker being willing to say they are not safe to keep going.

Sources: WorkSafe New Zealand, Managing the risks of shift work and Fatigue. Health and Safety at Work Act 2015.

Common questions

Who is this course for?

New Zealand shift workers and the supervisors and managers who build rosters and look after round-the-clock teams.

What will I take away?

Practical strategies for protecting sleep, managing fatigue on shift, and staying well over the long run, plus what managers can do to help.

Is fatigue really a health and safety issue?

Yes. Fatigue increases the chance of mistakes and injuries, so managing it is part of keeping a shift-based operation safe.

How do we enrol a team?

Get in touch and we will set up the right option for your team or roster.

Is there a legal limit on how many hours someone can work in New Zealand?

Not a general one. Outside transport, where drivers have work time limits under land transport law, there is no statutory cap on hours. What applies instead is the HSWA 2015 duty to ensure health and safety so far as is reasonably practicable, and health includes fatigue. The absence of a number makes the assessment your responsibility, not someone else's.

What does WorkSafe say about twelve-hour night shifts?

That twelve-hour shifts increase fatigue risk, especially at night, that anything beyond twelve hours should be avoided, and that consecutive twelve-hour night shifts should be limited to two or three. WorkSafe also advises avoiding permanent night shifts where reasonably practicable.

Our roster breaks one of those guidelines. Are we in trouble?

Not automatically. The guidance is not a set of hard limits. What matters is whether you can show you assessed the risk, involved the people working the roster, and put controls in place. A roster that departs from the guidance with a documented reason is a very different position from one nobody has looked at.