Six in Ten Austrian Workers Doubt They Can Stay Healthy Until Retirement, Heat Study Finds

New Austrian study finds indoor temperatures of 30°C increase workplace accident risk by 7%. Unions demand binding heat limits for hospitals, schools, and offices.

A new study from the Vienna Chamber of Labour (Arbeiterkammer Wien) and the Medical University of Vienna (MedUni Wien) has laid bare the toll rising temperatures take on workplace safety. Based on more than 17,000 calculations, the research shows that performance drops noticeably once the mercury hits 27 degrees Celsius.

The key finding: when indoor temperatures reach 30°C, the risk of having an accident on the job climbs by seven percent. The researchers define a critical threshold at a core body temperature of 38.5°C — at that point, work must stop immediately.

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Unions and employee representatives say the evidence demands far tougher rules than currently exist. Since the start of the year a new heat-protection regulation has been in effect in Austria, but it mainly covers outdoor work. The Chamber of Labour (AK) and the Austrian Trade Union Federation (ÖGB) are pushing for binding limits inside buildings — especially in hospitals, nursing homes and schools.

AK department head Ines Stilling put the stakes bluntly: six out of ten workers surveyed doubt they will make it to retirement in good health. What is needed, she argues, are legally mandated "heat-free" rules and mandatory measurements using the Wet Bulb Globe Temperature (WBGT) index. Under extreme conditions, employees should be allowed no more than 15 minutes of work without a break.

The long-term health consequences are serious. Chronic heat exposure can cause kidney damage, reduced fertility and a higher risk of death from cardiovascular disease. Already 51 cases of white skin cancer have been officially recognised as occupational diseases in Austria.

The German Statutory Accident Insurance (DGUV) warns supervisors to watch for signs of heat exhaustion: moist, cool skin, a racing pulse, muscle cramps, dizziness and nausea. Left untreated, these can escalate into a life-threatening heatstroke that damages organs or the brain. First aid involves moving the person to a cool area, elevating legs or head, applying damp cloths and giving electrolyte drinks.

Companies can adapt by shifting work hours, scheduling regular hydration breaks and setting up cooling rooms. Technical fixes such as roof sprinklers and fans are already used in countries like Vietnam.

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Austrian emergency services feel the heat directly. The Samariterbund Vienna reports that ambulance callouts rise by up to 20 percent on extremely hot days. In response, the city of Vienna now allows air-conditioning units in public housing under certain conditions. Experts caution, however, that this alone is not enough — a comprehensive strategy anchored in sustainable building renovations is required.

A series of awareness events is set to begin. On 9 June, Austria marks the action day "Cool Solutions at the Workplace". The following day in Klagenfurt, environmental medicine specialist Hans-Peter Hutter will brief local authorities on heat protection for communities.