There is no legal maximum working temperature under UK law because conditions vary widely between workplaces. For example, bakeries and foundries often operate in high heat due to the nature of their work.
Is It Too Hot or Cold to Work?
Working in Hot Temperatures
However, employers must comply with health and safety laws, which include:
- Keeping the workplace temperature at a comfortable level
- Providing clean and fresh air
Even without a legal maximum, employers are expected to monitor and manage the risk of heat-related stress or illness.
Working in Cold Temperatures
The law provides minimum indoor temperature guidelines:
- 16°C – for normal work
- 13°C – if the work involves rigorous physical effort
Employers should take practical steps to keep employees comfortable in the cold, such as:
- Providing warm clothing or PPE
- Offering warm-up breaks
- Improving heating and insulation
Protecting Workers in Extreme Temperatures
For both high and low temperatures, employers should:
- Assess the risk to workers’ health
- Take steps to reduce exposure where possible
- Provide appropriate training, PPE, and support
Employees should speak to their employer if the temperature feels uncomfortable or unsafe.
Outdoor Working
Working outdoors in hot or cold environments can pose health risks such as:
- Heat stress or dehydration
- Cold stress or hypothermia
Employers should:
- Provide shaded or heated shelters
- Adjust working hours or schedules
- Ensure access to drinking water or warm drinks
🔗 Follow HSE guidance on working in hot temperatures
