Hot Work Permit Last modified: July 15, 2026

There is no specific UK law that states a hot work permit must be used for every hot work activity. However, employers have a legal responsibility to identify and control risks associated with workplace activities, including the risk of fire caused by heat, sparks or flames.

Under the Health and Safety at Work etc. Act 1974 and the Management of Health and Safety at Work Regulations 1999, employers must carry out suitable risk assessments and put safe systems of work in place.

A hot work permit system is widely recognised as best practice for managing high-risk activities. It provides evidence that hazards have been considered, appropriate controls have been implemented, and work has been authorised before it begins.

A hot work permit should be issued by someone who understands the risks involved and has the appropriate authority and knowledge to assess whether the work can be carried out safely.

This is usually a responsible person such as a:

• Site manager
• Facilities manager
• Health and safety manager
• Competent person responsible for permit-to-work systems

The person issuing the permit should confirm that suitable precautions are in place, the work area has been checked, and everyone involved understands the requirements before the task begins.

A hot work permit is usually only valid for a specific task, location and time period. It is not an ongoing authorisation and should not be reused for different jobs or circumstances.

Most permits are issued for a single shift or working day, although the duration will depend on the organisation’s procedures and the level of risk involved.

If conditions change, such as a different work area, new hazards being identified, or the work extending beyond the agreed timeframe, a new permit may be required.

Yes. Contractors carrying out hot work on a business’s premises should follow the same safety requirements as employees.

A hot work permit helps ensure contractors understand the site-specific risks, emergency procedures and required safety controls before starting work.

Businesses should ensure contractors:

• Have suitable training and experience.
• Understand the permit conditions.
• Follow agreed fire prevention measures.
• Do not begin work until the permit has been approved.

This is particularly important because employers remain responsible for managing risks to anyone affected by their work activities, including contractors and visitors.

Hot work refers to any activity that creates heat, sparks, flames or enough energy to ignite combustible materials.

Common examples include:

• Welding
• Grinding
• Flame cutting
• Brazing
• Soldering
• Use of blowtorches
• Torch-applied roofing
• Some forms of heating, burning or metalwork

Even short-duration tasks can create a significant fire risk, particularly when carried out near flammable materials, gases, dust or building materials.

Carrying out hot work without appropriate controls can significantly increase the risk of workplace fires, injuries and property damage.

Potential consequences include:

• Workplace fires or explosions.
• Serious injury or fatalities.
• Damage to buildings, equipment and stock.
• Legal action, fines or prosecution.
• Increased scrutiny from regulators.
• Difficulties with insurance claims if adequate safety procedures were not followed.

A hot work permit helps businesses demonstrate that they have taken reasonable steps to manage risks and protect people.

Small and medium-sized businesses can manage hot work risks by introducing clear procedures and ensuring employees and contractors understand their responsibilities.

Key steps include:

• Completing a suitable risk assessment before work begins.
• Using a formal hot work permit process.
• Checking the work area for combustible materials.
• Providing appropriate fire-fighting equipment.
• Ensuring staff are trained and competent.
• Carrying out checks after the work has finished.
• Keeping records of permits and safety checks.

For SMEs without dedicated health and safety resources, external support can help create practical systems that are proportionate to their business risks.

Yes. Many organisations now use digital health and safety platforms to manage hot work permits and other permit-to-work processes.

Digital systems can help businesses:

• Issue permits quickly and securely.
• Track active and completed permits.
• Store records for audits and inspections.
• Improve communication between teams and contractors.
• Create a clear audit trail of safety checks.

For businesses managing multiple sites or contractors, digital permits can make compliance easier and more consistent.

A fire watch is a designated person responsible for monitoring the work area during and after hot work takes place to identify any signs of fire or smouldering materials.

Their responsibilities may include:

• Watching for sparks, smoke or heat-related hazards.
• Having suitable fire-fighting equipment available.
• Raising the alarm if a fire starts.
• Monitoring the area after work has finished.

A fire watch is particularly important because some fires may not start immediately after hot work has ended. Continued monitoring helps identify and respond to hidden risks before they escalate.

impact HR can support businesses in creating practical health and safety systems that help reduce workplace risks and improve compliance.

Our health and safety support can include:

• Developing tailored health and safety policies.
• Creating safe systems of work and procedures.
• Supporting risk assessments.
• Providing employee and manager training.
• Reviewing existing health and safety arrangements.
• Providing ongoing advice and guidance.

Whether you need support implementing a hot work permit process or improving your wider health and safety management, our experienced team can help ensure your approach is practical, compliant and suited to your business.