As the UK swelters in a heatwave with temperatures expected to reach 36°C, many workers are questioning whether they can legally stop working due to the heat. The answer is not straightforward, as there is no single legal maximum temperature for workplaces.
No Specific Legal Limit
According to the government's website, 'heat is classed as a hazard and comes with legal obligations like any other hazard.' However, the Workplace (Health, Safety and Welfare) Regulations 1992 states that 'during working hours, the temperature in all workplaces inside buildings shall be reasonable.' The Health and Safety Executive (HSE) notes that 'a meaningful maximum figure cannot be given due to the high temperatures found in, for example, glass works or foundries.'
Guidelines for Different Workplaces
The Chartered Institute of Building Service Engineers suggests ideal temperatures for different environments: heavy work in factories at 13°C, light work in factories at 16°C, hospital wards and shops at 18°C, and offices and dining rooms at 20°C. These are not legally binding but serve as guidance.
Minimum Temperature Requirements
The Approved Code of Practice recommends that workplace temperatures should be at least 16°C for sedentary work, or 13°C for physical labour.
Can You Leave Work If It's Too Hot?
Employees are not legally entitled to leave work solely because of high temperatures. The government advises workers to 'talk to their employer if the workplace temperature is not comfortable.' The HSE adds that 'if a significant number of employees are complaining about thermal discomfort, your employer should carry out a risk assessment, and act on the results of that assessment.'
Employer Responsibilities
Employers are required to manage risks from heat under health and safety law. This includes ensuring adequate ventilation, providing fans or air conditioning, allowing flexible working hours, and supplying cool drinking water. If an employer fails to address unreasonable temperatures, employees may have grounds for a complaint to the HSE.
