Key takeaways
- A ladder is an access tool, not a work platform, and the decision to use one should be made at planning stage rather than by whoever arrives at the task first.
- Most ladder injuries occur in the first few minutes of use, during setup and the first climb, when the ladder is placed by eye and not secured.
- Ladder setup depends on firm level ground, the manufacturer’s specified angle or set-out, restraint at the top, and foot traction, and all four need checking before the first climb.
- Work that requires two hands, sustained force, a load, or a long duration should be done from a scaffold, elevating work platform or temporary platform instead.
- Under the work health and safety legislation a ladder is plant, so inspection, maintenance and a record of both sit with the principal contractor and the person using it.
A ladder is on almost every residential site in NSW, often from the first day of the frame to the last day of the fit-out, and it is almost never named in the site access plan. The scaffold gets designed, the crane gets a lift study, the edge protection gets a detail, and the ladder gets carried in on a ute and leaned against a wall. That gap between how often a ladder is used and how little thought it receives is where most ladder injuries come from.
The other reason ladders are dangerous is timing. Injuries cluster in the first few minutes of use — while the ladder is being placed, adjusted, and climbed for the first time. Once a ladder is set correctly and the task has been matched to it, the residual risk is much lower. The problem is that setup is the part of the job everyone treats as obvious.
This article looks at ladders as a planning problem rather than a behaviour problem. It covers when a ladder is the wrong tool, how to set and secure one, what work should never be done from one, and how to write access into the site paperwork so the decision is made before somebody is standing on the third rung.
Why the first few minutes carry most of the risk
A ladder is a piece of plant under the work health and safety legislation, and like any piece of plant it needs to be suitable for the task, inspected, and used by someone competent to use it. The difference between a ladder and a scissor lift is that nobody signs a ladder out, nobody pre-starts it, and nobody records that it was checked. That informality is the point — and it is also the exposure.
Think about what happens in the first few minutes. A subbie walks a ladder to the task, looks at the ground, leans the ladder against something convenient, gives it a shake, and climbs. In that sequence there are several decisions made without a second thought: whether the ground is firm and level, whether the angle is right, whether the top is restrained, whether the base can slide, whether the surface the top is resting on can carry the load or will crush, and whether the ladder is the right tool for the task at all.
Each of those decisions is easy to get wrong and each of them causes the ladder to move when the person is on it. A ladder that shifts a few centimetres while someone is at height produces a fall or a reflex grab, and both of those cause injuries that would have been avoided if the setup had been checked in the same way the subbie checks the guard on a drop saw.
There is also a commercial dimension. A fall from a ladder is a notifiable incident in many circumstances, which brings SafeWork NSW onto the site, stops the programme, and starts an investigation that will look at what the principal contractor did to manage access. The cost of that is not the ambulance; it is the shutdown, the statements, the legal exposure, and the HBCF and contract consequences that follow. Against that, the cost of setting a ladder properly is a few minutes.
Deciding whether the ladder is the right tool at all
The first question is not how to set the ladder up. It is whether the task should be done from a ladder in the first place. A ladder is an access tool: it gets a person to a place, and it can support a short task at that place. It is not a work platform, and it is not designed to be occupied for long periods, to carry materials, or to take the lateral loads that come from pulling, pushing or leaning.
The practical test is what the task does to the person’s balance and grip. If the person needs both hands for more than a moment, if they need to apply force, if they need to carry a load, or if the task will take long enough that fatigue sets in, the ladder is the wrong tool. The correct answer is a temporary platform, a scaffold, or an elevating work platform, and the time to decide that is at planning stage, not when the subbie is standing at the base of the wall.
On residential work the temptation to default to a ladder is strong because most tasks are short and the ladder is already on the ute. That is exactly why the decisions need to be made earlier, at the point where the site access plan, the scaffold design and the programme are being set. A ladder used for a two-minute inspection is a reasonable choice. The same ladder used for a task that turns into forty minutes because the frame is out of square is a different risk altogether.
Where the work involves silica dust — cutting fibre cement, brick, tile or stone — the decision is more complicated again, because the controls for dust and the controls for working at height have to work together. The WHS duties for silica published by Safe Work Australia set out what a person conducting a business or undertaking has to do, and those duties do not disappear because the cutting is being done from a ladder.
Setting and securing a ladder on a residential site
Once the decision is made to use a ladder, the setup is the whole job. There are four things that have to be right before the first climb, and if any one of them is missing the ladder should not be used.
Setting up a ladder properly, in order
- 1Choose the spotFirm, level, clear of traffic, doors, and overhead conductors before anything is carried to the task.
- 2Set the angleUse the manufacturer’s specified set-out or angle indicator rather than an estimate by eye.
- 3Secure the topRestrain the stiles at the top so the ladder cannot shift sideways or kick out.
- 4Check the feetConfirm the feet are sound and suited to the surface, and that the ladder cannot slide on the base.
- 5Inspect before climbingLook for cracked stiles, damaged rungs, missing feet and a legible duty rating.
- 6Climb and maintain contactKeep three points of contact and stay within the ladder’s working reach, not above it.
The first is the ground. Ladders need firm, level footing, and on residential sites that is frequently not what is available. Loose sand, freshly turned soil, a sloping driveway, a suspended slab edge, a wet tiled floor and a pile of offcuts are all common bases, and all of them allow the ladder to move. If the ground cannot be made firm and level, the ladder is the wrong tool for that spot.
The second is the angle or set-out. Ladders are designed to be used at a particular angle, which the manufacturer specifies, and getting that wrong changes how the ladder carries load and how likely it is to slip out at the base or tip backwards. Use the manufacturer’s angle indicator or set-out rather than an estimate by eye, and check the current requirement in the manufacturer’s instructions and the relevant Australian Standard if you are unsure.
The third is restraint at the top. A ladder that is only leaning is relying on friction, and friction is not a control. Restrain the stiles at the top so the ladder cannot shift sideways, and make sure whatever the ladder is resting against can take the load without crushing or deflecting. On a residential site, a gutter, a fascia, a temporary handrail or a sheet of cladding are all common resting points and none of them are automatically suitable.
The fourth is the base. The feet need to be in good condition and matched to the surface. On smooth surfaces the ladder can slide out; on soft surfaces it can sink. Both failures happen in the first few minutes, which is why the setup is the part of the job worth slowing down for.
What should never be done from a ladder
Some tasks are simply not ladder work, regardless of how well the ladder is set up. The clearest cases are tasks that need two hands, tasks that need sustained force, tasks that involve carrying a load up or down, and tasks that take long enough to cause fatigue.
Tasks that suit a ladder and tasks that do not
| Reasonable from a ladder | Move to another platform |
|---|---|
| Short-duration inspection at low height | Work requiring two hands for more than a moment |
| Light task with one hand free | Any task needing sustained force or leverage |
| Access to a platform, then step off | Carrying materials or tools that need both hands |
| Quick check with a second person present | Work near live electrical parts or overhead conductors |
| Task the ladder is rated and set for | Long-duration work at height or repeated trips up and down |
Work near live electrical parts deserves its own rule. Ladders, particularly aluminium ones, conduct, and the combination of a conductive ladder and overhead conductors or live parts is a serious hazard. The electrical safety guidance from Safe Work Australia sets out the general duties, and on a residential site the practical control is to keep the ladder and the person well clear of any conductor and to use non-conductive equipment where that is the appropriate control.
Other tasks that should never be done from a ladder include anything where the person has to lean out past the stiles to reach the work, anything where a tool has to be started or swung, and anything where the ladder is being used as a substitute for a proper platform because the platform was not organised in time. The last of those is the most common on residential sites and the most avoidable.
A worked example: a builder in western Sydney
A builder in western Sydney is doing a first-floor addition on an occupied home. The scaffold is up on two elevations, but the third elevation is over a garden bed and the scaffold was never extended there because it was not in the original quote. The carpenter needs to fix a fascia and install a downpipe on that elevation.
The carpenter carries an extension ladder across, sets it on the garden bed, leans it against the gutter, and climbs. The ground is soft, the base sinks slightly, and the ladder shifts as he reaches for the downpipe bracket. He grabs the gutter, the ladder kicks out, and he lands on the garden bed. He is lucky: a sprained wrist and a bruised hip. The incident is still notifiable, SafeWork NSW attends, and the site is shut for the day.
The investigation focuses on three things. Was the task planned? Was a ladder the right tool for a task that needed two hands, a bracket and a downpipe? And what did the principal contractor do to identify the access requirement for that elevation before the scaffold was designed?
The builder’s exposure is not the sprained wrist. It is the shutdown, the statements, the lost programme, and the question of whether the scaffold should have covered that elevation in the first place. A short access review at quoting stage, and a second look when the scaffold was delivered, would have caught it. The lesson is not that ladders are dangerous; it is that access decisions made late are access decisions made badly.
Writing access into the site paperwork
Ladders do not appear in most site documentation because they are treated as tools rather than plant. The fix is to write access into the documents that already exist: the site access plan, the safe work method statement, and the induction.
The site access plan should name each elevation and the intended access method for the work on it. Where a ladder is the intended method, the plan should say so, and should say what the ladder is being used for and what it is not. That single sentence removes most of the improvisation later.
The safe work method statement for high-risk construction work should identify the access method for that work rather than treating access as a given. If the SWMS says the work will be done from a ladder, the controls for ladder use need to be in it. If the work cannot be done safely from a ladder, the SWMS is the right place to record what the alternative is. The PointCPD article on how to build a SWMS template for residential builders in NSW covers the structure, and ladder access belongs in the same document as the task it supports.
The site induction should cover where ladders are stored, who is responsible for inspecting them, how to report a damaged ladder, and what tasks are not permitted from a ladder. Induction is also the right place to make clear that any subbie who arrives at a task without a safe access method stops and asks, and that stopping is supported rather than penalised.
Inspection and maintenance need an owner. Ladders are damaged by being thrown on and off utes, by being used as a bridge, and by being left in the weather. Cracked stiles, bent rungs, missing feet and worn labels are common and easy to miss. A simple register, a regular check, and a clear rule that a damaged ladder is tagged out and removed from site is enough. This is the same discipline that applies to other plant, and it is the part that most residential sites skip.
Ladders and the CPD picture for NSW builders
Work health and safety sits inside the continuing professional development that NSW builders need to maintain their licence. The way the scheme works, what counts, and how much is required is set out in the PointCPD guide to how NSW builder CPD works, and the courses themselves are listed in the PointCPD course catalogue. Ladder safety is a good example of why the safety component matters: the risk is not exotic, it is on every site, and the controls are cheap.
The regulators in NSW are Building Commission NSW and NSW Fair Trading. Neither approves or accredits CPD providers, and nothing here suggests otherwise. What matters for a builder is that the safety content is practical enough to change what happens on site the following week.
Where ladders sit alongside other residential access problems, the related articles on working alone on residential sites and confined spaces in residential plumbing pits cover the parts of the picture that ladders do not. Between them they cover the access decisions that most often get made by the person who arrives last.
If you want to check your own site, start with the next task that involves a ladder and ask four questions before anyone climbs: is the ladder the right tool, is the ground firm and level, is the ladder restrained at the top, and is the base sound. If any of the four is unclear, the answer is a different access method, and the time to arrange that is now rather than when the subbie is already on the rung.
Questions builders ask
When is a ladder the wrong tool for a task on a residential site?
A ladder is the wrong tool whenever the task needs two hands for more than a moment, needs sustained force, involves carrying a load, or will take long enough that fatigue sets in. It is also the wrong tool where the ground cannot be made firm and level, or where the only restraint available at the top cannot take the load. In those cases the correct answer is a temporary platform, scaffold or elevating work platform, and that decision belongs at planning stage.
How should a ladder be secured on site?
Restrain the ladder at the top so the stiles cannot shift sideways or kick out, and make sure the surface it rests against can carry the load without crushing. Set the ladder to the manufacturer’s specified angle or set-out rather than estimating by eye. Check the feet are sound and suited to the surface, and confirm the ground is firm and level before the first climb.
Why do most ladder injuries happen early in the task?
Setup is the part of ladder use that gets the least attention, and it is where the ladder is placed, adjusted and climbed for the first time. Ground conditions, angle, restraint and base traction are all decided in that window, and a failure in any one of them shows up as movement while the person is on the ladder. Once the ladder is set correctly and matched to the task, the residual risk is much lower.
Is a ladder classified as plant under WHS law?
Yes. A ladder is plant under the work health and safety legislation, which means it must be suitable for the task, inspected, maintained, and used by a person competent to use it. That brings obligations for the principal contractor as well as the person on the ladder. A simple register, a regular check and a rule that damaged ladders are tagged out and removed from site is enough to meet the intent.
What work should never be done from a ladder?
Work near live electrical parts, particularly with an aluminium ladder, should never be done from a ladder. Neither should work that requires leaning out past the stiles, work where a tool has to be started or swung, or work that is being done from a ladder only because a proper platform was not organised in time. The last case is the most common on residential sites and the most avoidable.
How does ladder safety fit into NSW builder CPD?
Work health and safety content sits within the continuing professional development NSW builders complete to maintain their licence, and ladder safety is a practical example of that content. The structure of the scheme is set out in the PointCPD guide to NSW builder CPD, and the available courses are listed in the catalogue. Building Commission NSW and NSW Fair Trading are the regulators, and neither approves or accredits CPD providers.
Sources
- Projects · Contour3D
- Electrical safety · Safe Work Australia
- Pools and pool safety · NSW Government
- WHS duties for silica · Safe Work Australia
Published 29 July 2026. General information for builders, not legal, financial or engineering advice for a specific job. Check current requirements with the relevant regulator or standard before relying on them.
