UK Workers Face No Legal Heat Limit, Many Forced to Stop Early During Heatwave

Across the United Kingdom, workers are contending with stifling conditions as heatwaves become more frequent, yet legal frameworks offer minimal protection. Current legislation dictates no maximum working temperature, leaving many employees to endure conditions described by some as 'like cats on a hot tin roof'.

Legal Ambiguity on Workplace Temperatures

The Workplace (Health, Safety and Welfare) Regulations 1992 mandate that indoor workplaces must maintain a 'reasonable' temperature. However, this stipulation is vague, with a recommended minimum of 16C (13C for strenuous work) but no upper limit. This regulatory gap means employers are not legally compelled to provide cooler environments, even when temperatures soar, creating situations where productivity plummets and employee well-being is jeopardised.

Reports indicate that during recent heatwaves, numerous workers in various sectors, including manufacturing, offices, and even outdoor roles, have been forced to down tools early or take extended breaks to cope with the heat. Trade unions have repeatedly called for a legal maximum temperature, suggesting 27C for most jobs and 24C for physically demanding roles, arguing that extreme heat poses significant health and safety risks, including dehydration, heat stress, and fatigue.

Without explicit legal limits, employers are largely left to interpret 'reasonable' temperature, often resulting in inconsistent measures and, for many, a lack of adequate ventilation, air conditioning, or access to cooler working areas. This situation highlights a broader policy failure to adapt workplace regulations to the realities of a changing climate, where sustained periods of high temperatures are becoming increasingly common.