The first heatwaves of the season have hit Luxembourg, bringing familiar workplace questions. Can you legally refuse to work if it gets too hot? Must employers provide water? Is it allowed to show up in shorts or sandals? Here’s what Luxembourg law and recent guidance say—and where the gray areas still lie.
Can You Refuse to Work When It’s Too Hot?
Luxembourg’s Labor Code does not mandate an automatic stop to work even during extreme heat. Don’t expect work to be called off just because it’s sweltering outside. However, employers are still required to protect their employees’ safety and health at work, and must assess weather-related risks. This means employers need to take necessary steps to reduce heat risks and ensure working conditions remain safe.
The country’s Labor and Mines Inspectorate (Inspection du Travail et des Mines, or ITM) recommends that employers maintain a suitable temperature in workspaces, but doesn’t set a maximum limit. The clear expectation is for businesses to manage workplace comfort and safety during heatwaves.
Outside Jobs: Higher Heat Dangers
Working outdoors—such as in construction, agriculture, or park maintenance—brings higher risk. During heatwaves, the dangers of dehydration, heatstroke, or sunstroke sharply increase, making protective measures especially important.
But can employees walk off the job if it feels dangerous? Luxembourgish law does allow what’s called the “right of withdrawal” if working conditions present a grave and imminent danger to health. This is a last resort, only for specific situations, and must be judged case by case.
Shorts, Sandals, and Dress Codes
When the temperature rises, it’s tempting to dress lighter at work. No Luxembourg law specifically bans shorts or sandals in the office. However, in jobs with customer interaction or where a specific uniform is required, employers can enforce a dress code—as long as it’s justified by the nature of the work and is reasonable. In many office environments, understated shorts or open shoes are not legally forbidden, provided they fit company norms and expectations.
Ultimately, while the law may not prohibit summer attire, it’s wise to consider workplace culture and your employer’s specific policies.
Heatwaves: The New Normal
Heatwaves are no longer rare events. According to the Chamber of Employees (CSL), “Europe is warming twice as fast as the global average,” and “heatwaves will become more frequent and intense.” The CSL argues that the current legal framework is too vague to protect workers during today’s harsher climate conditions, stating that general employer obligations are now “no longer sufficient in the face of increasingly frequent extreme weather events.”
The Chamber believes Luxembourg should move from voluntary recommendations to a clear, national prevention plan that offers more robust protections for the most exposed workers.
Until such policies arrive, knowing your basic rights and staying alert to both legal requirements and common sense remain the best ways to beat the heat at work.
