If you look at your weather app, chances are you may be greeted by the little sun icon you've been longing to see over the last few wet, windy weeks.  With the "Sarahan Bubble" raising temperatures in Europe to scorching, the UK is set to see some warmer weather.

As a result, many employers are likely to be hearing their employees say it’s “too hot to work” – but is there a maximum temperature above which employees cannot be expected to work?  

Well, yes and no.

The Workplace (Health, Safety and Welfare) Regulations 1992 (SI 1992/3004) state that, during working hours, the temperature in all workplaces inside buildings should be reasonable. However, the Regulations do not provide a maximum workplace temperature.  That’s not to say, however that employees can be required to work no matter the conditions.

The Health and Safety Executive previously provided guidelines stating that an acceptable zone of thermal comfort for most people in the UK lies "roughly between 13°C (56°F) and 30°C (86°F), with acceptable temperatures for more strenuous work activities concentrated towards the bottom end of the range, and for more sedentary activities towards the higher end". This is a huge range, and what is reasonable will depend on the nature of the workplace and the activities undertaken.  Employers should bear in mind their duty of care to their employees and their health and safety obligations in assessing whether it is safe for staff to work in the heat.  You should also be wary of more vulnerable employees at this time.

For more information and practical tips on dealing with the hot weather, check out the Acas Guidance.

Should you have any queries about the issues raised in this article, or on any employment related matter, please contact our expert Arvin Sandhu by email or on 01494 893 542.