Working in the Heat: Know the Risks, Stay Protected

As temperatures in the UK continue to rise, it’s more important than ever for employers to take heat health and safety seriously. While we might not experience extreme heatwaves as often as other countries, even moderate increases in temperature can have a significant impact on worker health, productivity, and wellbeing.

Here’s what employers need to consider when managing heat risks in the workplace — indoors and outdoors.

Understanding the Risks

Excess heat can lead to a range of health issues, including:

• Heat stress
• Dehydration
• Fatigue
• Reduced concentration
• Heat stroke (in severe cases)

These risks are particularly relevant in environments such as:

• Construction sites
• Factories and warehouses
• Commercial kitchens
• Offices without proper ventilation

Legal Responsibilities

Under the Health and Safety at Work etc. Act 1974, employers have a duty to ensure the health, safety, and welfare of employees. While there’s no legal maximum workplace temperature in the UK, employers must:

• Conduct risk assessments
• Take action to reduce exposure to risks
• Provide a comfortable working environment

The Management of Health and Safety at Work Regulations 1999 also require employers to assess and manage risks from thermal conditions.

Practical Steps for Employers

1. Carry Out a Heat Risk Assessment

Identify high-risk roles or areas in your workplace. Consider physical activity levels, indoor temperatures, and access to cooling.

2. Adjust Working Hours or Patterns

Allow flexible shifts to avoid the hottest parts of the day — especially for outdoor or manual work.

3. Improve Ventilation and Cooling

Ensure air conditioning and fans are working properly. If unavailable, consider providing portable fans or cool breaks.

4. Provide Hydration Stations

Make cool water readily available throughout the workplace and encourage regular drinking.

5. Relax Dress Codes (Where Safe)

Allow for lighter clothing if possible. Provide appropriate PPE alternatives that offer protection and breathability.

6. Educate and Train Staff

Ensure workers know the signs of heat-related illness and how to respond. Encourage regular breaks and self-monitoring.

7. Monitor Vulnerable Workers

Be extra cautious with employees who are pregnant, have pre-existing conditions, or are new to strenuous work in heat.

Communication is Key

Make sure your team knows that heat-related symptoms should never be ignored. Foster a culture where staff feel comfortable taking breaks, asking for help, and reporting any concerns.

Looking Ahead

With climate change bringing more frequent heatwaves to the UK, managing workplace temperatures isn’t just a seasonal concern — it’s becoming a year-round responsibility. Planning ahead and prioritising employee wellbeing is not only good for safety but also for morale and productivity.