Legal requirements: What does the Workplace Ordinance say?
The German Workplace Ordinance (ArbStättV) stipulates that "healthy room temperatures" must be maintained in workspaces. These requirements are concretised by the technical rule for workplaces ASR A3.5 "Room temperature". A minimum temperature of 20 degrees Celsius applies to office activities that are categorised as "light work". For medium-heavy physical work, the minimum temperature is 19 degrees, and for heavy work 12 degrees. These values apply throughout working hours and are intended to ensure that employees are not exposed to cold.
Optimum office temperature: between well-being and productivity
Studies and experts recommend a room temperature of between 20 and 24 degrees Celsius for offices. The legal minimum requirement is met at 20 degrees, while 22 to 24 degrees is considered by many to be ideal for concentration and productivity. Too low a temperature can reduce concentration and lead to long-term health problems, while too high a temperature can cause tiredness and discomfort.
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Deviations for construction sites
For break rooms and sanitary facilities on construction sites, 18 °C is sufficient. However, it must also be ensured that 21 °C can be achieved.
Practical tips for employers
- Regular checks: The room temperature should be regularly checked and documented, especially in the transition months.
- Flexible solutions: Take employees' individual needs into account, e.g. through customisable heating or ventilation options.
- Clothing and breaks: In extreme temperatures, adapted clothing rules or additional breaks can help to maintain well-being.
- Technical measures: Modern air conditioning or heating systems with intelligent controls can save energy and at the same time ensure a pleasant indoor climate.
Conclusion
The legal minimum temperatures are clearly defined, but the optimum indoor climate also depends on individual factors. Employers should observe the requirements of the ArbStättV and ASR A3.5 and at the same time cater to the needs of their employees - for a healthy, productive working environment.
Tip: The temperature is measured at a height of 0.6 m (seated) or 1.1 m (standing) - using a radiation-protected thermometer.
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Sources
- GMBI Contents Issue No. 09-11/2022 (not publicly accessible)
- Unofficial text from the 2022 working committee (publicly accessible)