Working in the Heat: Safety Tips

As the UK continues to experience frequent spells of hot weather, employers need to understand that working in the heat may create a real health and safety risk in the workplace. Although many people enjoy warmer conditions, hot temperatures can impact concentration, reduce productivity and, most importantly, affect employee health and safety.

Regardless of whether staff are based in an office, warehouse, factory or working outdoors, employers are legally required to assess the risks and put appropriate measures in place to protect their workforce. Having effective systems in place also supports clear communication with employees, helps ensure compliance, and provides accurate records of actions taken.

What Does the Law Say?

It is often wrongly assumed that UK law sets a maximum workplace temperature. In fact, there is no fixed legal upper limit, as working conditions vary widely between different environments.

That said, under the Health and Safety at Work etc. Act 1974 and the Workplace (Health, Safety and Welfare) Regulations 1992, employers must:

• Maintain a reasonable workplace temperature
• Provide clean and fresh air
• Assess risks to employees’ health and safety
• Implement appropriate control measures where high temperatures could present a risk

When assessing risk, employers should consider more than just air temperature. Factors such as humidity, physical activity levels, ventilation, exposure to direct sunlight, and any clothing or PPE requirements should also be considered.

Risks of Working in the Heat

Working in hot conditions can have serious consequences for both health and safety. Key risks include:

• Heat exhaustion
• Heat stress
• Dehydration
• Heat stroke (a medical emergency)
• Reduced concentration and slower reaction times
• Increased likelihood of accidents
• Worsening of existing medical conditions
• Lower productivity and reduced wellbeing

Spotting the Signs of Heat Stress

Dehydration may present as thirst, a dry mouth, dark urine, headaches, dizziness and tiredness.

Heat exhaustion symptoms can include heavy sweating, cool or pale skin, muscle cramps, weakness, nausea, a rapid heartbeat and faintness. Anyone showing these signs should be moved to a cooler environment, given water and closely observed.

Heat stroke is a medical emergency. Warning signs include confusion, collapse or loss of consciousness, hot and dry skin, extremely high body temperature and seizures. Emergency services (999) should be contacted immediately while cooling measures are started.

How Employers Can Reduce the Risks of Working in the Heat

Employers should:

• Ensure access to cool drinking water
• Promote regular hydration throughout the day
• Improve airflow and ventilation
• Limit direct sunlight using blinds or shading
• Move workstations away from heat sources where possible
• Plan physically demanding tasks for cooler times of the day
• Introduce additional rest breaks when needed
• Provide cooler rest areas
• Allow flexibility in dress codes where appropriate and safe
• Review PPE requirements
• Keep a close eye on vulnerable employees
• Train supervisors to identify heat-related illness
• Update risk assessments during periods of extreme heat

How H&S Software Helps to Manage the Risk

Health and safety software, such as oneSAFE, can also play an important role in managing hot weather risks.

Employee Announcements

Employers can quickly send notifications to employees advising of temporary measures such as relaxed dress codes, hydration reminders or changes to working arrangements.

Training Matrix

Heat-related safety training can be assigned and tracked to ensure managers and employees understand the risks.

Incident Log

If an incident or near miss occurs as a result of high temperatures, it can be logged immediately, helping organisations identify trends, demonstrate compliance and take preventative action.

Outdoor Working and the Risks of the Sun

Those working outside face additional hazards, including heat stress, dehydration, sunburn, UV-related skin cancer risks and fatigue.

To reduce these risks, employers should:

• Provide shaded areas for breaks
• Encourage frequent hydration
• Plan strenuous tasks for cooler parts of the day
• Rotate physically demanding duties where possible
• Supply appropriate sun protection and UV-resistant clothing where needed
• Regularly check weather forecasts so working arrangements can be adjusted accordingly.

Be Prepared Before Temperatures Rise

Hot weather should not be treated as a minor inconvenience. Without proper precautions, high temperatures can significantly increase the risk of illness, accidents and reduced performance.

By taking a proactive approach through regular risk assessments, clear communication, appropriate training and sensible control measures, employers can protect their workforce while maintaining productivity during warmer periods. Using health and safety software, such as oneSAFE, to manage communications, training, risk assessments and incident reporting also provides a clear audit trail, making it easier to demonstrate compliance and respond effectively when temperatures rise.

Book a demo to see how oneSAFE can help you manage your employees’ health and safety when working in the heat.

Call: 0330 107 1037

Email: contact@onehrsoftware.com

Find us on Instagram: @oneHR_