Know your rights in soaring temperatures

There is no specific legal maximum or minimum temperature for workplaces, which can make it hard to define exactly when it is too hot to work. However, the Workplace (Health, Safety and Welfare) Regulations 1992 (or 1993 in Northern Ireland) require employers to maintain a “reasonable” temperature in the workplace.

What counts as reasonable will vary depending on the type of work being done, the working environment, and individual circumstances such as medical conditions or disabilities. Because of this, employers need to consider each situation carefully rather than apply a one‑size‑fits‑all approach.

Employers are legally required to carry out a risk assessment to protect the health and safety of their staff. Heat is considered a workplace hazard, meaning it must be treated as seriously as any other risk. 

As part of this duty, employers should work with union health and safety representatives and staff to agree practical steps to manage high temperatures. These measures might include providing plenty of drinking water, allowing more frequent breaks, improving ventilation, or adjusting working hours.

For those working outdoors, hot weather can bring additional risks such as sun exposure, dehydration, and an increased chance of skin cancer. Employers must assess these risks as well and put appropriate safeguards in place. This could include supplying protective clothing, sunscreen, and access to fresh drinking water.

The Health and Safety Executive (HSE) offers guidance on workplace temperatures, including a checklist and advice on maintaining “thermal comfort” so that working conditions remain safe and manageable.

If you are having issues with excessive heat at work, you should speak to your health and safety representative. You can also get support through PCS Digital or by emailing [email protected].