As maximum workplace temperatures become a pressing issue, employers and schools must act now to protect people from extreme heat. The proposed bill by Green MP Hannah Spencer highlights the urgent need for legislation, but businesses shouldn't wait for a legal limit—current laws already require a reasonable indoor temperature and risk assessments. Heat can impair concentration and increase fatigue, raising accident rates. Employers can implement simple measures: adjust work schedules, move physically demanding tasks to cooler hours, provide shaded rest areas, free drinking water, and relax dress codes. Schools face even greater challenges, with classrooms reaching over 40°C, endangering children's health and learning. Wet paper towels and ice pops are insufficient—systematic climate resilience plans are essential. The Institution of Occupational Safety and Health urges proactive protection, not just compliance.
Understanding the Need for Maximum Workplace Temperatures
Heat stress is a recognized occupational hazard. When temperatures exceed 30°C (or 27°C for strenuous work), risks escalate. Employees may experience dizziness, nausea, or heat stroke. The UK Health and Safety Executive (HSE) already requires employers to maintain a “reasonable” temperature, but no fixed upper limit exists. This gap leaves workers vulnerable during heatwaves.
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Key Measures Employers Can Take Right Now
- Flexible scheduling: Start work earlier or later to avoid peak heat.
- Hydration stations: Provide cold water and encourage frequent breaks.
- Cooling areas: Create shaded or air-conditioned rest zones.
- Dress code adjustments: Allow lighter clothing where safe.
- Monitoring vulnerable staff: Pregnant employees, older workers, and those with medical conditions need extra attention.
Comparison of Temperature Guidelines
| Region/Organization | Maximum Recommended Temperature | Notes |
|---|---|---|
| UK HSE (current) | No fixed maximum (reasonable indoor temp) | Legal guidance recommends action above 30°C |
| Proposed UK Bill | 30°C (27°C for strenuous work) | Mandatory if passed |
| US OSHA | No specific limit (general duty clause) | Heat stress standard proposed |
| Australia (example) | 35°C (light work), 30°C (heavy work) | State-dependent |
The table shows how other regions set clearer thresholds. A fixed maximum would give businesses a target to plan for.
The School Heat Crisis
Children in overheated classrooms cannot learn effectively. As reported, pupils struggle above 40°C, calling for their parents. The Department for Education requires climate action plans, but implementation is patchy. Systematic solutions include installing blinds, improving ventilation, using fans, and scheduling lessons during cooler times. Long-term, schools need green infrastructure and insulation.
Why Proactive Protection Matters
Good employers recognize that safeguarding staff during heatwaves isn't just about legal compliance—it's about preventing harm and showing genuine commitment to a safe, healthy workforce. Ruth Wilkinson, head of policy at IOSH, emphasizes that workers need protection now, not after legislation passes. The same applies to schools: children cannot wait for government mandates.
FAQ
What is the proposed maximum workplace temperature in the UK?
The bill by Green MP Hannah Spencer suggests a maximum of 30°C for general work and 27°C for strenuous tasks. However, it has not yet become law.
Are employers legally required to maintain a specific temperature?
Current UK law requires a “reasonable” indoor temperature but sets no exact figure. Employers must also assess risks and take steps to protect workers.
What can schools do to cope with extreme heat?
Schools can use fans, blinds, and cool clothing; shift PE to cooler times; provide water stations; and invest in long-term building improvements like insulation and shade structures.
Act now: review your workplace or school’s heat management plan. Even without a legal maximum, taking proactive steps saves lives and improves productivity. Don't wait for parliament—start protecting today.
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