Keep cool: time for a comprehensive hot weather policy
According to recent research by TNO, around 358,000 people in the Netherlands - approximately 4 percent of the working population - work in overly warm conditions and experience heat stress as a result. Occupations such as cooks, police officers, bakers, and welders are particularly affected. Heat stress occurs when the body absorbs more heat than it can release, which can lead to symptoms such as fatigue, difficulty concentrating, fainting, and even heatstroke.
Weather conditions increasingly contribute to heat stress
Heat stress develops more quickly during physically demanding work, especially when workers wear protective clothing or work near artificial heat sources like ovens or welding equipment. Weather conditions also play a growing role: high temperatures, humidity, sun and low wind make it harder for the body to release excess heat, especially during outdoor work or in poorly cooled indoor spaces.
In addition, vulnerable groups, such as pregnant women and people with heart or lung conditions, also deserve special attention during hot weather. Their bodies may struggle more to regulate heat or react more sensitively to heat. A well-thought-out heat policy helps prevent health risks, mistakes, and absenteeism, and demonstrates a genuine commitment to employee well-being.
Under the Working Conditions Act, you as an employer are obliged to ensure a safe and healthy work environment, including in hot weather conditions. Although there is no specified maximum temperature, the heat should not pose a risk to health. It is therefore important for your organisation to make clear agreements on this.
From temporary cooling to a sustainable policy
An effective hot weather policy does not have to be complicated. Most importantly, it requires awareness, preparation and communication. Here are a few practical tips:
1. Map out the risks
- Use the RI&E as a basis for determining which jobs and workplaces run an increased risk in hot temperatures, such as outdoor locations or poorly ventilated areas.
- Supplement the RI&E with specific risks related to heat stress.
- Involve employees in identifying issues and sharing experiences.
2. Establish a hot weather protocol
- Specify the temperatures at which the measures must be taken.
Create specific guidelines on adjusted working hours, extra breaks, appropriate clothing and sun protection, including head covering and sunscreen.
Provide cooling solutions
Make sure that there is enough drinking water, ventilation or air conditioning, and sun protection.
4. Communicate clearly and promptly
Aim to announce your policy before the summer starts. This allows both managers and employees to know what to expect.
5. Train managers and employees
- Recognise the signs of heat stress.
- Encourage an open culture where employees feel comfortable indicating when it is getting too hot.
6. Evaluate and improve
- After a hot period, discuss what went well and what could be improved.
- Adjust the policy based on experience and feedback.
Small actions, big impact
Sometimes a few simple steps like extra breaks, a special hot weather schedule, and letting people work from home on extremely hot days can make a big difference. By planning ahead, you can avoid surprises and show that you care about the health of your employees. Make working in hot temperatures an integral part of your health and safety policy – not just during a heatwave, but all year round.
More information
Want to know more? The RIVM website provides detailed information about the health effects of high temperatures, practical tips and the National Heatwave Plan, which is designed to protect vulnerable groups during periods of extreme heat.
Have any questions or would you like customised advice? Please contact your regular contact person at HumanCapitalCare. We are happy to proactively assist you.