Council Fined After Ride-On Mower Overturns on Steep Bank
Ride-On Mower Overturns on a Steep Bank: What Employers Should Learn from £50,000 Council Fine
What should a ride-on mower slope risk assessment include?
A ride-on mower slope risk assessment should examine the actual location, including the gradient, surface, weather, ground condition, mower suitability, manufacturer’s limits, operator competence, edge hazards, public exposure and emergency arrangements.
It should not be a generic form that simply tells the operator to use the mower carefully.
The assessment needs to answer a practical question:
If this machine slides, where does it go?
If the answer is towards or potentially over a retaining wall, ditch, watercourse, road, footpath, public area or exposed drop, then we need stronger controls before work starts.
Ride-on mower location after the incident at St Peter & St Paul’s Church, North Wheatley. Image credit: Health and Safety Executive.
What happened?
An employee of Bassetlaw District Council was carrying out routine grounds maintenance at St Peter and St Paul’s Church in North Wheatley, Nottinghamshire.
The worker was operating a ride-on lawnmower on a steep bank in the closed churchyard.
The mower slid down the bank towards a retaining wall. The machine and the worker then went over the wall and fell approximately 2.3 metres onto the pavement and public road below.
The worker suffered serious injuries, including cracked ribs.
Bassetlaw District Council was fined £50,000 and ordered to pay costs after pleading guilty to breaches of sections 2(1) and 3(1) of the Health and Safety at Work etc. Act 1974.
HSE found that the council had failed to:
– Carry out a suitable and sufficient risk assessment for using ride-on mowers on banks and slopes.
– Provide adequate information, instruction and training.
– Put measures in place at the retaining wall to prevent a fall from height.
The judge found the council highly culpable and said it had fallen far short of expected industry standards.
Why this incident matters
When people think about work at height, they normally picture a ladder, scaffold, roof or MEWP.
They do not normally picture someone cutting grass.
That is exactly why incidents like this matter.
Grass cutting sounds routine. A ride-on mower may be familiar equipment. The work may have been completed many times before without an accident.
But routine does not mean low risk.
A mower on flat, open ground is one task.
A mower on a steep bank, above a retaining wall, with a road and footpath below, is a completely different task.
The work involved:
– Machinery stability.
– Loss of traction.
– Steep and uneven ground.
– An exposed edge.
– A fall to a lower level.
– Risk to the operator.
– Risk to members of the public.
– Difficult access if the operator became injured or trapped.
The job might still be described as “cutting the grass”, but the safe system of work may need to change completely.
View from the churchyard slope down towards Church Hill and Church Street. Image credit: Health and Safety Executive.
Is working on a slope classed as work at height?
Not automatically.
Working on a slope becomes a work at height issue where someone could fall a distance, potentially to a lower level liable to cause personal injury.
That might include falling:
- Over a retaining wall.
- From the side of an embankment.
- Into a ditch, culvert or excavation.
- Towards a watercourse.
- Onto a road or footpath below.
- Over an exposed edge.
In the Bassetlaw incident, the mower and worker fell approximately 2.3 metres over a retaining wall. That was clearly a fall from height risk.
Other slope hazards still need to be controlled even where the Work at Height Regulations do not apply. A worker can still slide, lose their footing, be struck by equipment, become trapped or be unable to leave the slope safely.
The legal label does not make the hazard appear or disappear.
HSE states that work at height must be properly planned, supervised and carried out by competent people using suitable equipment. Employers must also consider emergency evacuation and rescue arrangements.
Why a generic risk assessment is not enough
A generic grounds maintenance assessment might cover blade contact, noise, vibration, refuelling and general mower operation.
Those issues matter, but they do not answer the site-specific questions created by a steep bank.
A suitable assessment needs to reflect the actual ground, equipment, people and surroundings.
Assessment area | Questions to answer |
Slope and surface | What is the gradient? Is the surface wet, soft, uneven, rutted or covered in loose vegetation? |
Machine suitability | Is the mower designed for this gradient and direction of travel? What do the manufacturer’s instructions say? |
Stability and traction | Could the machine slide sideways, roll, overturn or lose braking control? |
Safety features | Are roll-over protection, restraints, guards and other safety-critical features fitted, maintained and used correctly? |
Edges and consequences | Is there a wall, ditch, road, watercourse, culvert, excavation or public area below? |
Operator competence | Has the operator been trained and familiarised with the particular machine and the risks of slope work? |
Public protection | Could the machine, operator, tools or materials reach pedestrians, vehicles or other workers? |
Work method | Is a ride-on mower the safest option, or should the method or equipment change? |
Supervision and stop points | Who checks the conditions? When must the operator stop and escalate the job? |
Emergency arrangements | How will the machine be made safe and an injured or trapped worker be reached and recovered? If there is a possibility of the machine overturning, the person falling from the mower and the machine injuring them, then an alternative must be sought |
HSE’s risk assessment guidance requires employers to identify hazards, assess who could be harmed, put effective controls in place and review whether those controls remain effective. Paperwork is not the main objective. The objective is controlling the risk in practice.
When should a ride-on mower not be used?
A ride-on mower should not be used where the terrain, ground condition, weather, edge hazard or manufacturer’s limits mean the machine could slide, overturn or leave the work area.
Warning signs include:
- The gradient is outside the manufacturer’s permitted limits.
- The operator cannot confirm the gradient or machine limit.
- The ground is wet, icy, soft, rutted or unstable.
- The machine is being pulled sideways across the slope.
- There is insufficient distance from a retaining wall or exposed edge.
- Safety-critical equipment is missing, damaged or not being used.
- The area below cannot be closed or protected.
- The operator has not received suitable training or familiarisation.
- There is no realistic method for dealing with an injured or trapped operator.
- Conditions have changed since the work was planned.
Just because a machine can physically reach an area does not mean it is suitable for the work.
“Drive carefully” is not a control measure.
If the equipment is unsuitable, change the equipment, change the work method to enable the task to be done safely.
PUWER requires work equipment to be suitable for the intended use, maintained in a safe condition and used by people who have received adequate information, instruction and training.
Training must match both the machine and the environment
Someone may be competent to operate a ride-on mower on flat ground without being competent to use it on banks and slopes.
That is not criticism of the operator. It is recognition that the environment has changed the task.
Competence may need to include:
- Operating and checking the specific mower.
- Understanding its safety features.
- Knowing the manufacturer’s slope limits.
- Recognising poor traction and unstable ground.
- Selecting a safe direction of travel.
- Maintaining an appropriate distance from edges.
- Knowing when the method is no longer safe.
- Protecting workers and members of the public below.
- Reporting changing conditions.
- Responding if the mower begins to slide or overturn.
Where workers must leave machinery and physically access steep ground, additional slope working competence may also be required.
Mower operator training and working-on-slopes training are related, but they are not interchangeable.
Church Hill and the retaining wall below the slope. Image credit: Health and Safety Executive.
Public areas change the consequences
The mower and worker in this incident fell onto a public road and footpath.
That means the risk was not limited to the employee.
Where work is undertaken above a road, footpath, car park, building entrance or other public area, employers must consider what could travel downhill.
That could include:
- The machine.
- The operator.
- Tools and equipment.
- Cut vegetation.
- Stones or debris.
- Fuel or other substances.
Controls may include exclusion zones, barriers, temporary closures, traffic management, banksmen, supervision or a different work method.
A sign at the bottom of the slope will not stop a mower coming over a wall.
Emergency and recovery arrangements
The emergency plan should be proportionate to what could realistically happen.
Not every grounds maintenance task needs a technical rope rescue team standing by, you may just need to work better on the slope
However, the plan should still explain:
- How work will be stopped.
- How the machine will be shut down and stabilised.
- How the area above and below will be controlled.
- How the casualty will be reached.
- Whether normal access remains usable after the incident.
- What first-aid provision is available.
- Whether the casualty could be trapped, pinned or unable to walk.
- How emergency services will access the location.
- Who will meet and direct responding crews.
- Whether specialist recovery equipment or trained personnel are required.
Calling 999 may form part of the emergency response.
It does not replace planning for the immediate actions that workers and supervisors may need to take before emergency services arrive.
Seven checks before slope work starts
1. Inspect the actual location
Do not assess the job solely from photographs, maps or a previous visit.
Check the slope, surface, edges, access and area below.
2. Confirm the machine limits
Use the manufacturer’s information for the specific make, model and configuration.
Do not rely on what another mower can do.
3. Select the safest method
Consider whether the work can be completed from safer ground or using different equipment.
The answer may be a handheld mower, machine or brushcutter, remote-controlled equipment, manual methods or leaving the area uncut until a safer method is available.
4. Set clear stop points
Stop when traction deteriorates, the machine slides, visibility changes, the ground becomes unstable or public protection cannot be maintained.
Workers must have authority to stop without being pressured to finish the area.
5. Control the area below
Consider people, traffic, buildings, water and other work activities.
Control anything that could be affected if the operator, machine or materials move downhill.
6. Check competence and supervision
Confirm that the operator understands the equipment, terrain, controls and stop points.
Supervision should check the safety of the method, not simply whether the job has been completed.
7. Confirm the emergency arrangements
Ask how an injured, trapped or immobilised person would be reached.
If the answer is “we would work that out at the time”, the plan is not finished.
The Element Safety view
Slopes should not be treated as awkward flat ground.
A slope changes footing, balance, equipment behaviour, access, supervision and the consequences of losing control.
Our approach starts with the decision, not the harness.
- Can the work be avoided?
- Is the selected equipment suitable?
- What is below the work?
- Can the person remain in a safe position?
- What happens if they lose control?
- How will they be recovered if they cannot leave safely?
Element Safety provides Lantra-accredited Working on and Recovery from Shallow and Steep Slopes training for teams accessing or working on banks, embankments and steep ground.
The training focuses on practical slope assessment, system selection, work restraint, controlled movement and planned recovery.
It does not replace machinery-specific operator training. It supports teams whose work involves physically accessing and operating on steep or exposed terrain.
Final thought
The most useful question before slope work begins is not:
Can we get the job done?
It is:
If the person, machine, tool or material slips, where does it go?
If the answer involves a retaining wall, ditch, road, watercourse, footpath, public area or drop, the task needs more than a generic risk assessment and a reminder to be careful.
Change the equipment.
Change the method.
Control the area.
Train the people.
Plan B – what happens when things go wrong.
If you lose control on a slope, there may be time to work out a plan B
Working on and recovery from slopes training
Element Safety provides practical, rescue-led Working on and Recovery from Shallow and Steep Slopes training for local authorities, grounds maintenance teams, landscapers, highways contractors, rail teams, utilities, estates departments and environmental organisations.
For advice about slope work, competence, system selection or recovery planning:
training@elementsafety.co.uk
elementsafety.co.uk
Practical. Real-world. Rescue-led.
Frequently asked questions
Is all work on a slope classed as work at height?
Potentially. A slope is not automatically classed as work at height. The Work at Height Regulations become relevant where someone could fall a distance or to a lower level liable to cause personal injury, such as over a retaining wall, down an exposed embankment or into a ditch.
Does a ride-on mower require a site-specific slope risk assessment?
Yes, where the mower is used on a bank, slope, uneven surface or near an exposed edge. The assessment should consider the actual ground, machine suitability, manufacturer’s limits, operator competence, public exposure and emergency arrangements.
What should employers check before using a mower on a slope?
Employers should check the gradient, surface, weather, traction, machine specification, safety features, direction of travel, distance from edges, public areas, operator competence and foreseeable consequences of losing control.
When should a ride-on mower not be used?
It should not be used where the terrain or conditions are outside the machine’s limits, the operator could lose control, an exposed edge cannot be protected, safety equipment is missing or the area below cannot be controlled.
Does working-on-slopes training replace mower operator training?
No. Operators need appropriate training and familiarisation for the machinery they use. Working-on-slopes training addresses the additional hazards and controls involved when people access or work on banks, embankments and steep ground.
Is calling 999 a sufficient recovery plan?
Calling 999 can be part of the emergency response, but it does not replace arrangements for stopping the work, making the equipment safe, controlling the area, reaching the casualty, providing first aid and directing emergency responders to the location.
Sources and further reading
- Health and Safety Executive. District Council fined £50,000 after worker seriously injured in lawnmower incident.
- Health and Safety Executive. Introduction to working at height safely.
- Health and Safety Executive. Managing risks and risk assessment at work.
- Health and Safety Executive. Provision and Use of Work Equipment Regulations 1998 overview.
Key lessons and takeaways
- Bassetlaw District Council was fined £50,000 after an employee was seriously injured when a ride-on mower overturned on a steep bank.
- This was not simply a mower accident, the work involved machinery stability, steep ground, a retaining wall, a public area below and a reasonably foreseeable fall from height.
- A generic grounds maintenance risk assessment is not enough when when working, especially with machinery on banks, slopes or near exposed edges.
- Equipment must be suitable for the actual terrain and used within the manufacturer’s limits – alternative solutions may need to be chosen.
- Operator training, slope competence and emergency recovery arrangements must match the real work being undertaken.
- Before starting, ask one simple question: if this person or machine slides, where do they go?
How Element Safety Can Help
Be Prepared
This incident was avoidable. The next one can be prevented.
Be Better
This incident was avoidable. The next one can be prevented.
Element Safety provides practical training for teams working on slopes, embankments and areas where fall risks are often underestimated.
Our training helps teams recognise when everyday outdoor work becomes higher risk because of the ground, the equipment, the weather or the surroundings.
Element Safety provides:
✅ Working at Height Training
✅ Embankments & Slopes Training
✅ Rescue From Height Training
✅ Work at Height for Managers
✅ Practical risk assessment awareness
✅ Real-world planning and control measures
We help teams understand how to work safely on slopes, how to plan the task properly and how to recognise when the method needs to change.
This is especially important for grounds maintenance, landscaping, vegetation clearance, local authority work, estates teams and anyone working near banks, retaining walls, ditches or drops.
We help teams understand how to work safely on slopes, how to plan the task properly and how to recognise when the method needs to change.
This is especially important for grounds maintenance, landscaping, vegetation clearance, local authority work, estates teams and anyone working near banks, retaining walls, ditches or drops.
📩 training@elementsafety.co.uk 🌐 elementsafety.co.uk