Slips and trips are two of the most common causes of workplace accidents in the UK. Although the terms are often used together, they describe different types of hazards — and understanding the distinction can help businesses choose the right safety signs.

A wet floor, trailing cable, uneven surface or unexpected step can all cause someone to fall. However, the way each hazard causes an accident is different.

So, what is the difference between a slip hazard and a trip hazard? And should you use a Slippery Floor Sign, Trip Hazard Sign, Uneven Surface Sign or Mind the Step Sign?

In this guide, we'll explain the differences, look at common workplace examples and help you select suitable Slip, Trip & Fall Safety Signs for your premises.

What Is a Slip Hazard?

A slip hazard is a condition that can cause someone to lose their footing because there is insufficient grip between their footwear and the walking surface.

Slips commonly occur when floors are wet, contaminated or unexpectedly slippery.

Common Examples of Slip Hazards

• Wet floors after cleaning.

• Rainwater brought into building entrances.

• Oil or grease on workshop floors.

• Food or drink spillages.

• Ice on outdoor walkways.

• Slippery tiles or other floor finishes.

• Water around washrooms or changing facilities.

• Wet loading bays and warehouse entrances.

For example, an employee walking across a freshly cleaned floor may lose their footing if the surface remains slippery.

Similarly, a visitor entering a building during heavy rain may encounter a wet entrance floor.

Which Signs Are Used for Slip Hazards?

Common warning notices include:

• Caution – Slippery Surface

• Warning – Slippery Floor

• Caution – Wet Floor

• Slippery When Wet

The correct message depends on the actual condition and whether the hazard is temporary or ongoing.

Buying tip: If you're warning about a wet or slippery surface, choose a sign that specifically identifies the slipping risk rather than a general Trip Hazard Sign.

What Is a Trip Hazard?

A trip hazard is an obstruction or change in level that can cause someone's foot to catch, interrupting their normal movement and potentially causing them to fall.

Unlike slipping, which involves losing grip on the floor, tripping typically involves contact with an obstacle or an unexpected change in the walking surface.

Common Examples of Trip Hazards

• Trailing electrical cables.

• Raised floor edges.

• Uneven paving.

• Loose flooring.

• Unexpected steps.

• Door thresholds.

• Materials left in walkways.

• Damaged floor coverings.

• Changes in floor level.

• Temporary maintenance equipment.

For example, a warehouse employee may trip over a cable crossing a pedestrian route.

A customer entering a shop may catch their foot on an unexpected step or raised threshold.

Which Signs Are Used for Trip Hazards?

Depending on the situation, suitable notices may include:

• Warning – Trip Hazard

• Caution – Uneven Surface

• Mind the Step

• Watch Your Step

• Warning – Uneven Ground

Choose wording that accurately describes the hazard.

Buying tip: A Mind the Step Sign is generally more specific than a Trip Hazard Sign when the risk comes from a step or change in floor level.

Slip Hazard vs Trip Hazard: Key Differences

Although both hazards can result in falls, they occur in different ways.

The simplest distinction: A slip happens when your foot loses grip. A trip happens when your foot catches on something.

Can the Same Area Have Both Slip and Trip Hazards?

Yes. Some workplaces contain both types of hazards in the same area.

For example, a warehouse loading bay might have rainwater on the floor and an uneven threshold.

The rainwater creates a potential slip hazard, while the raised threshold creates a potential trip hazard.

Similarly, a commercial kitchen could contain slippery flooring and obstacles in a walkway.

Where multiple hazards exist, businesses should assess each risk and determine the most appropriate controls and warning messages.

Displaying one generic sign may not always communicate every relevant hazard.

Which Safety Sign Should You Choose?

Choosing the correct sign starts with identifying the condition you're trying to warn people about.

1. Slippery Floor Signs

Best suited to: Surfaces where there is a risk of slipping.

Typical applications include:

• Wet entrances.

• Cleaning areas.

• Commercial kitchens.

• Washrooms.

• Relevant industrial floors.

A Slippery Floor Sign helps alert people to a potentially slippery walking surface.

Where the condition is temporary, a portable warning sign or suitable barrier may be more appropriate than a permanent wall-mounted notice.

2. Trip Hazard Signs

Best suited to: Areas containing obstacles or other tripping risks.

Typical applications include:

• Temporary maintenance areas.

• Workshops.

• Industrial walkways.

• Construction environments.

• Relevant warehouse areas.

A Trip Hazard Sign can draw attention to a tripping risk that remains after appropriate control measures have been considered.

However, cables, obstructions and other avoidable hazards should be removed or controlled wherever reasonably practicable.

3. Uneven Surface Signs

Best suited to: Irregular floors, changes in level or uneven ground.

Typical applications include:

• Industrial premises.

• Warehouses.

• Outdoor access routes.

• Maintenance areas.

• Locations with uneven paving.

An Uneven Surface Sign can be more informative than a general Trip Hazard Sign when the problem is specifically the condition of the walking surface.

4. Mind the Step Signs

Best suited to: Unexpected steps, thresholds and changes in floor height.

Typical applications include:

• Building entrances.

• Door thresholds.

• Internal level changes.

• Relevant stair approaches.

• Commercial premises.

A Mind the Step Sign helps people recognise a specific change in level before they reach it.

Where necessary, suitable lighting, contrasting markings and other physical measures should also be considered.

5. Caution Stairs Signs

Best suited to: Staircases where an additional warning is appropriate.

These signs may be useful where a particular stair-related hazard remains.

However, a warning sign doesn't replace appropriate handrails, lighting, maintenance or other necessary precautions.

Where Should Slip and Trip Hazard Signs Be Displayed?

Correct positioning is just as important as selecting the right message.

A warning sign should be visible before someone reaches the hazard, giving them an opportunity to recognise and respond to the warning.

Common Locations for Slip Hazard Signs

• Entrances exposed to rainwater.

• Areas undergoing cleaning.

• Wet loading bays.

• Relevant washrooms and changing facilities.

• Industrial floors where a slipping hazard remains.

Common Locations for Trip Hazard Signs

• Walkways affected by temporary works.

• Changes in floor level.

• Uneven flooring.

• Relevant warehouse routes.

• Building entrances with unexpected thresholds.

• Outdoor paths with specific tripping hazards.

What About Mounting Height?

There is no single universal mounting height for every workplace slip or trip warning sign.

The appropriate position depends on the sign, the environment, viewing distance and intended audience.

For example, a wall-mounted Uneven Surface Sign may need a different position from a portable Wet Floor Sign.

Practical tip: Approach the hazard from the same direction as an employee or visitor. Check whether the sign can be seen and understood before reaching the affected area.

Temporary vs Permanent Slip and Trip Hazard Signs

Not every hazard requires the same type of sign.

Temporary Warning Signs

Temporary signs may be appropriate for short-term conditions such as:

• Floor cleaning.

• Spillage response.

• Maintenance work.

• Temporary changes to walking routes.

These notices should be removed or updated when the condition changes.

For temporary wet floors, freestanding warning signs and barriers can be useful where appropriate.

Permanent Warning Signs

Fixed signs may be considered where a particular hazard remains despite appropriate controls.

Examples could include:

• A necessary change in floor level.

• An unavoidable threshold.

• A specific area with a persistent slipping risk.

• A relevant industrial access route.

However, permanent signage should not be used as a substitute for repairing damaged flooring or addressing avoidable hazards.

Choosing the Right Sign Size and Material

Once you've identified the hazard, consider how and where the sign will be installed.

Self-Adhesive Safety Signs

Self-adhesive vinyl signs can be useful on suitable smooth, clean surfaces such as doors, panels and other compatible locations.

They may be a practical choice where a separate signboard isn't required.

Rigid Safety Signs

Rigid signs may be preferable for walls, fences, gates and other locations where a mounted board is needed.

For outdoor applications, check the product's suitability for the expected conditions.

What Size Should You Buy?

The most suitable size depends on:

• Viewing distance.

• Lighting conditions.

• Available mounting space.

• The size of the pictogram and wording.

• Whether the sign will be viewed by pedestrians or from vehicles.

A small sign may be suitable for a nearby door or specific piece of equipment.

A larger sign may be needed for an industrial walkway or warehouse entrance.

Always check the available sizes and material options on the individual product page before ordering.

Are Slip and Trip Hazard Signs Required by UK Law?

UK employers have duties to assess and manage workplace risks, including slipping and tripping hazards.

The Health and Safety at Work etc. Act 1974 and relevant workplace regulations establish broader responsibilities for providing safe working conditions.

The Health and Safety (Safety Signs and Signals) Regulations 1996 address the use of safety signs where significant risks remain after other appropriate control measures have been taken.

However, there isn't a universal rule requiring every workplace to display a particular Slip Hazard Sign or Trip Hazard Sign.

The need for signage depends on the hazards present and the measures used to control them.

For example, a temporary wet floor may require appropriate cleaning arrangements, access restrictions and a suitable warning.

An uneven walkway may require repair or other physical improvements rather than simply displaying a permanent Trip Hazard Sign.

Warning signs support workplace safety measures. They do not replace the need to eliminate or reduce hazards wherever reasonably practicable.

Common Mistakes When Choosing Slip and Trip Signs

Avoid these frequent mistakes:

1. Using a Slippery Floor Sign for a hazard caused by an obstacle.

2. Using a generic Trip Hazard Sign where a Mind the Step Sign would be clearer.

3. Buying permanent signs for hazards that should be repaired or removed.

4. Displaying signs after the hazard rather than before it.

5. Choosing signs that are too small for the viewing distance.

6. Positioning notices where they become obscured.

7. Leaving temporary warning signs in place after a hazard has been removed.

8. Selecting unsuitable materials for the mounting location.

9. Assuming a warning sign alone makes the area safe.

10. Failing to review signs when workplace conditions change.

Slip Hazard vs Trip Hazard: Quick Buying Checklist

Before ordering, ask yourself:

• Is the hazard caused by a slippery surface or an obstruction?

• Does the sign wording accurately describe the risk?

• Is a more specific sign available, such as Mind the Step or Uneven Surface?

• Is the hazard temporary or ongoing?

• Have appropriate measures been taken to remove or reduce the risk?

• Can the warning be seen before someone reaches the hazard?

• Is the sign large enough for the intended viewing distance?

• Is the material suitable for the installation?

• Have all relevant approaches been considered?

• Will the sign be reviewed and maintained?

Frequently Asked Questions

What Is the Main Difference Between a Slip Hazard and a Trip Hazard?

A slip hazard involves losing grip on a walking surface, while a trip hazard involves a foot catching on an obstruction or change in level.

Is a Wet Floor a Slip or Trip Hazard?

A wet floor is generally a slip hazard because moisture can reduce grip between footwear and the surface.

Is an Uneven Floor a Trip Hazard?

Yes, uneven flooring can create a trip hazard where a person's foot may catch on a raised edge or change in level.

Are Trailing Cables a Trip Hazard?

Yes. Cables crossing pedestrian routes can create a tripping risk. They should be removed, rerouted or otherwise controlled wherever reasonably practicable.

Should I Use a Trip Hazard Sign or Mind the Step Sign?

A Mind the Step Sign is usually more specific when the hazard is a step or threshold. A Trip Hazard Sign may be suitable for a broader tripping risk.

Can One Sign Warn About Both Slips and Trips?

A combined warning may be appropriate in some situations, but the message should accurately identify the relevant hazards. Separate signs may be clearer where the risks differ.

Are Slip and Trip Warning Signs Suitable for Outdoor Use?

Selected signs can be used outdoors where the material and installation are appropriate. Check the individual product specifications before ordering.

Buy Slip, Trip & Fall Safety Signs from The Sign Shed

Whether you're identifying a slippery floor, warning visitors about an unexpected step or highlighting an uneven surface, choosing the right safety sign helps communicate the hazard clearly.

At The Sign Shed, we supply a range of Slip, Trip & Fall Safety Signs for UK workplaces, warehouses, workshops, schools, construction sites and commercial premises.

Our range includes:

• Trip Hazard Signs.

• Slippery Floor Signs.

• Uneven Surface Warning Signs.

• Mind the Step Signs.

• Caution Stairs Signs.

Choose from a selection of sizes and materials to suit different applications.

Made in Britain, with bulk savings available on eligible orders.

Shop Slip, Trip & Fall Safety Signs at The Sign Shed and find the right warning notice for your workplace.