London Daily

Focus on the big picture.
Thursday, Sep 17, 2026

Unions call for maximum UK workplace temperature as heatwave descends

Unions call for maximum UK workplace temperature as heatwave descends

Staff should be given flexible working options and more breaks as heat approaches 40C, say union leaders
Unions are calling for people to get legal protection against high temperatures in UK workplaces, as a heatwave arrives that could cause temperatures to approach 40C on Monday and Tuesday.

The GMB union said the government should set a maximum temperature for workplaces of 25C, meaning employers should offer flexible working and travel arrangements, give staff extra breaks and relax dress codes to allow staff to wear cooler clothes.

Lynsey Mann, the union’s health and safety officer, said: “This hot weather is great for being on a sun lounger, but if you’re trying to work through it’s no joke.

“Bosses need to do everything possible to keep workplaces cool and, more importantly, safe. This can be as simple as letting people wear more casual clothing and providing proper hydration.

“High levels of UV exposure also mean that outdoor workers have a much higher risk of developing skin cancer. Simply allowing more breaks and providing sun cream and protective clothing, such as hats with neck covers, can help reduce this risk.

“Ultimately, there needs to be a legal maximum working temperature in the same way we have a legal minimum working temperature, and it is in employers’ interests – workers who are overheating aren’t going to be at their best.”

Meteorologists have given an 80% chance of the heatwave breaking the UK’s record for highest temperatureof 38.7C, which was reached in 2018.

There is a 50% chance of 40C being broken in an area of the UK that has been given a red weather warning for heat.

While there are rules regarding minimum temperature levels in UK workplaces, there are no laws that set a maximum level.

The Health and Safety Executive (HSE) has previously said that employers have a responsibility to ensure that working conditions are “reasonable”, but there is no specific temperature limit.

The Cabinet Office minister, Kit Malthouse, has said that Monday and Tuesday may be “a moment to work from home” due to travel disruption, while the UK Health Security Agency has warned of risks to health from the soaring heat.

The deputy prime minister, Dominic Raab, said people should stay hydrated, but added that they should be “resilient” and “enjoy the sunshine”.

Some local authorities have warned of disruption to services, and a number of schools in areas covered by the red warning – central, northern, eastern and south-eastern England – have told parents they will remain closed.

The Trades Union Congress general secretary, Frances O’Grady, repeated a call that she made in 2018, amid highs of 35C, for a maximum limit to be set.

She said: “We all love it when the sun comes out, but working in sweltering conditions in a baking shop or stifling office can be unbearable and dangerous. Indoor workplaces should be kept cool, with relaxed dress codes and flexible working to make use of the coolest hours of the day.

“Bosses must make sure outdoor workers are protected with regular breaks, lots of fluids, plenty of sunscreen and the right protective clothing.”
Newsletter

Related Articles

0:00
0:00
Close
UK Health Unions Warn of Staffing Pressures as Public and Private Pay Growth Diverges
Rockstar Games Faces Tribunal Claims From 23 Former Grand Theft Auto VI Developers
UK Treasury Faces Tighter Budget Constraints as Borrowing Costs and Pension Spending Rise
Prime Minister Andy Burnham Sets Out Ten-Year Plan for Greater Public Oversight of Utilities
UK Economy Grows 0.4% in July as Services and Technology Activity Strengthen
Scotland, Wales and Northern Ireland Leaders Coordinate Push for UK Constitutional Change
Police Tighten Public-Order Measures After Anti-Immigration Protests in Dover and Portsmouth
UK Ministers Pressed for Answers After US Diplomat Accused of Child Abuse Images Leaves Britain
Jaguar Land Rover Pursues NATO Defense Contracts for Defender Vehicles
British Service Member Dies in Road Accident While Deployed in Ukraine
George Osborne Calls for Britain to Rejoin EU Customs Union
Anthropic Chief Dario Amodei Urges Faster UK Action on Advanced AI Risks
UK State Pension Set for 3.9% Rise Under Triple Lock
UK Labour Market Cools as Payrolled Employment Continues to Decline
Reform UK’s £72 Million in Donations Faces Scrutiny Under Proposed Retrospective Funding Rules
UK Doctors Warn Expanded Pharmacy First Scheme Could Put Patients at Risk
British Airlines Cut Short-Haul Capacity as Jet Fuel Costs Rise
UK News Publishers Forecast 40% Search Traffic Drop as AI Overviews Expand
Axel Springer Wins Approval for £575 Million Daily Telegraph Acquisition
London Mayor Sadiq Khan Opposes Heathrow Third Runway Over Climate Targets
Scotland, Wales and Northern Ireland Leaders Hold Summit Seeking Greater Autonomy
UK Energy Price Cap Set to Rise to £1,723 in October
UK Treasury Warns Middle East Conflict Is Threatening Economic Growth
Labour Moves to Retrospectively Cap Overseas Political Donations After Reform UK Funding Surge
HMRC Warns Nearly Seven Million Adults Are Unclear About State Pension Entitlements
UK Parliament Passes Sovereign Grant Reform Before Conference Recess
British Rail Passengers Gain Automatic Right to Switch Operators During Disruptions
Burnham Hosts Downing Street Business Summit as UK Fiscal Pressure Builds
Labour Government Moves to Challenge £72 Million in Reform UK Crypto Donations
UK Advertising Industry Warns Wider Junk Food Rules Could Put £1 Billion in Media Spending at Risk
Cornwall Opens Devolution Talks With UK Government Over Transport and Local Services
UK Parliament Considers Sovereign Grant Reform Setting Royal Funding at £99.9 Million
Trades Union Congress Calls for Income-Based Energy Tariff Funded by Higher Bank Levy
UK Prime Minister Rejects Second Scottish Independence Referendum
House of Lords Begins Scrutiny of Bill to Lower UK Voting Age to 16
Anthropic Says Claude Was Exploited in Weapons-Related and State-Linked Cyber Activity
Institute of Directors Urges UK Government to Avoid Business Tax Increases in Autumn Budget
Rising Gilt Yields Cut UK Fiscal Headroom to About £13 Billion Ahead of Budget
UK Economy Grows 0.4% in July as Services and Technology Activity Strengthen
UK Government Promises Clearer Student Loan Guidance After Repayment Backlash
Charities Warn Unpaid Carers May Die Before Receiving Government Compensation
Dover Unrest Prompts Review of UK Counter-Extremism Strategy
Celtic Summit Leaders Reassert Right to Pursue Independence From UK
NHS Records Busiest Summer on Record Amid Severe Heatwaves
Harrods Faces Potential £150 Million Compensation Bill Over Al Fayed Abuse Claims
UK Parliament Opens Debate on Landmark Assisted Dying Legislation
Metropolitan Police Investigate Reform UK Over Alleged Foreign Electoral Donations
UK Economy Expands 0.4% in July as AI Investment Boosts Activity
Bank of England Signals Caution on Rates as Inflation Pressures Persist
Tesco Alerts Police After Scammers Use Its Branding in AI-Generated Fraud
×