This study analyses climate change-related occupational safety and health risks across 30 European countries. Survey data show that extreme heat is the most reported exposure, especially for agricultural, outdoor, manual and migrant workers. With unequal exposure to heat, sun, poor air quality and extreme weather among social groups, there is a clear need for targeted prevention, worker consultation and climate-adaptive policies. This study provides evidence based on harmonised data, which addressing geographic and sectoral data gaps found in previous single-country studies.