Employee Health and Wellbeing Hot Weather in the Workplace: 7 Things Employers Need to Know

With much of the UK experiencing warmer temperatures this week, many employers may face challenges that go beyond simply opening a few windows. While hot weather can boost morale and encourage people to spend more time outdoors, it can also affect productivity, increase sickness absence, and create health and safety concerns. Understanding your responsibilities as an employer can help you support your workforce while maintaining business continuity.

1. Hot Weather Can Affect Productivity

As temperatures rise, concentration levels can fall. Employees may become more fatigued, find it harder to focus, or experience discomfort that affects their performance. Simple measures such as improving ventilation, providing drinking water, and allowing additional breaks can help employees remain comfortable and productive.

2. Dress Codes May Need Temporary Flexibility

Many workplaces operate dress codes to maintain professional standards. However, employers should consider whether certain requirements remain reasonable during periods of unusually hot weather. Allowing sensible adjustments can improve employee comfort while helping to avoid potential discrimination concerns.

3. Sickness Absence May Increase

Warmer weather can sometimes coincide with higher levels of short-term absence. While employers should continue to follow their usual absence management procedures, it is important to avoid making assumptions about whether an absence is genuine. Consistency and clear communication remain key.

It is also worth recognising that hot weather can exacerbate certain health conditions and symptoms. Employees experiencing perimenopause or menopause, for example, may find symptoms such as hot flushes, fatigue, and sleep disruption become more severe during periods of high temperatures. Employers should be mindful that heat can affect individuals differently and consider whether reasonable adjustments or temporary workplace measures may be appropriate.

4. Employees May Request Flexible Working Arrangements

During hot weather, employees may ask for temporary adjustments such as earlier start times, later finish times, or occasional homeworking. While employers are not required to approve every request, considering reasonable flexibility where operationally possible can support wellbeing and maintain productivity.

5. Health and Safety Responsibilities Still Apply

Employers have a duty to protect the health, safety, and welfare of their employees. This may include ensuring access to drinking water, assessing workplace temperatures, improving airflow, and taking additional precautions for employees working outdoors or undertaking physically demanding roles. Particular care should be taken where employees may be vulnerable to heat-related illness.

Many employers are surprised to learn that there is currently no legal maximum workplace temperature in the UK. However, employers still have a duty under health and safety legislation to provide a reasonable working environment and assess any risks associated with excessive heat. This means employers should take practical steps to protect employee wellbeing where high temperatures could affect health, safety, or performance.

For further guidance on managing workplace temperatures and heat-related risks, employers can refer to the Health and Safety Executive (HSE) guidance.

6. Outdoor Workers Face Additional Risks

Employees working outdoors may be exposed to prolonged periods of direct sunlight and high temperatures. Employers should consider measures such as providing shade where possible, encouraging regular hydration, adjusting work schedules, and ensuring employees understand the signs of heat exhaustion and heatstroke.

While heatwaves can create temporary challenges for many workplaces, some employees work in high-temperature environments year-round. Chefs, kitchen staff, foundry and steel workers, manufacturing employees, and others may face increased risks when hot weather combines with already demanding working conditions. Employers should review risk assessments and ensure appropriate controls remain effective during periods of extreme heat.

7. Employees May Raise Concerns About Working Conditions

In some situations, employees may express concerns about working in excessive heat or question whether conditions are safe. Employers should take such concerns seriously, assess any potential risks, and maintain open communication. Addressing issues proactively can help resolve concerns before they escalate into formal disputes.

Preparing for Hot Weather

Although periods of hot weather may be temporary, the workplace challenges they create are very real. Taking practical steps to support employee wellbeing can help reduce disruption, maintain productivity, and ensure compliance with your legal obligations.

Need advice on managing workplace challenges during periods of hot weather? Our team can provide practical HR advice to help you support your employees and minimise disruption.

Hot weather is just one of many challenges facing employers today. Alongside day-to-day workplace issues, organisations are also preparing for significant employment law changes, including those arising from the Employment Rights Act.

Managing workplace challenges effectively often requires more than simply responding to issues as they arise. Providing managers and employees with the right knowledge and training can help organisations reduce risk, strengthen workplace culture, and remain compliant with evolving employment legislation.

To support employers, Spotlight HR offers a range of practical training courses designed to build confidence, improve awareness, and promote positive workplace behaviours.

Training Courses available now from Spotlight HR:

Preventing Sexual Harassment – Training for Managers
Helping managers understand their responsibilities and how to prevent inappropriate behaviour and organisational risk.

Preventing Sexual Harassment – Training for Staff
Supporting employees in understanding appropriate workplace behaviour and their responsibilities.

Preventing Sexual Harassment – Train the Trainer
Enabling organisations to deliver compliant training internally with confidence.

These courses are currently available for in-house delivery, with open course dates to be confirmed.

Training Courses Coming Soon:

Equality, Diversity, and Inclusion
Supporting organisations in meeting their legal responsibilities under equality legislation and promoting inclusive workplace practices.

Line Manager Responsibilities
Helping organisations reduce risk by ensuring managers understand their legal responsibilities and how to avoid common employment law pitfalls.

For further details about any of these courses, please contact Spotlight HR.