Working in Hot Weather: What Employers Need to Know

Jun 25, 2026 | News

Working in Hot Weather: What Employers Need to Know

With temperatures rising across the UK, employers should be reviewing how they protect employee health, safety and wellbeing during periods of hot weather.

While there is no maximum legal workplace temperature, employers still have a duty under health and safety legislation to ensure working conditions are reasonable and do not put employees at risk.

Guidance from the Advisory, Conciliation and Arbitration Service (Acas) and the Chartered Institute of Personnel and Development (CIPD) highlights several key areas employers should consider:

  • Carry out heat-related risk assessments.
  • Ensure access to drinking water.
  • Improve ventilation and airflow where possible.
  • Consider flexible working arrangements or adjusted hours.
  • Review dress codes and uniforms during hot weather.
  • Provide additional support for vulnerable employees, including pregnant workers and those with underlying health conditions.
  • Monitor outdoor workers and provide appropriate rest breaks and shade.

Hot weather doesn’t just affect comfort, it can impact concentration, productivity and increase the risk of heat exhaustion, dehydration and workplace accidents.

Managers should also be aware of the signs of heat stress, including fatigue, dizziness, headaches and confusion, and know how to respond appropriately.

A proactive approach not only supports compliance but demonstrates a genuine commitment to employee wellbeing and creating a positive workplace culture.

How is your organisation supporting employees during periods of extreme heat?

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