Employers are being urged to take steps to protect staff wellbeing and maintain productivity as the UK prepares for one of the hottest May bank holidays on record.
The warning comes as the Met Office forecasts temperatures exceeding 30°C in some parts of the country over the coming days, raising concerns around workplace comfort, travel disruption and employee health. Temperatures are forecast to peak on Monday when 33°C is likely to be recorded in southern England and the Midlands.
It also follows a report published this week by the Climate Change Committee warning that the government should consider introducing maximum workplace temperature regulations as extreme heat events become more common due to climate change.
Workplace advisory service Acas has issued guidance to employers on managing hot weather working conditions, including keeping workplaces cool, allowing flexibility around travel disruption and supporting vulnerable employees.
Niall Mackenzie, chief executive of Acas, said: “The warmer weather will be welcomed by many, but for some staff getting into work, or those working in warmer environments, it can be uncomfortable.
“Some workers with certain health conditions or disabilities may be adversely affected by the heat. The hotter weather can also impact public transport, which can hinder workers travelling to work.”
Under health and safety law, employers have a duty of care to ensure workplace temperatures are “reasonable” for staff, including employees working from home. While there is currently no legal maximum working temperature in the UK, the Health and Safety Executive advises employers to assess thermal comfort risks where staff are struggling with heat.
Acas recommended employers use fans, air conditioning and blinds to keep workplaces comfortable, while outdoor workers should wear suitable clothing and sunscreen.
The organisation also stressed the importance of hydration, reminding employers they must provide access to drinking water and suggesting businesses may wish to allow extra breaks for cold drinks during hotter periods.
Retailers, hospitality operators and other customer-facing businesses could face additional staffing pressures over the bank holiday weekend if heat-related transport disruption affects attendance.
Acas said employers should remain flexible where public transport delays impact commuting and encouraged workers to check travel arrangements in advance.
The advisory body also highlighted the need for employers to consider additional support for workers with health conditions or disabilities, including reasonable adjustments such as portable cooling units, fans or more frequent breaks.
Acas added that although businesses are not legally required to relax dress codes during hot weather, employers may wish to allow more informal clothing where practical.