Air pollution’s short-term effects on a wide range of health outcomes have been studied extensively, primarily focused on vulnerable groups (e.g., children and the elderly). However, the air pollution effects on the adult working population through sick leave have received little attention. This study aims to 1) estimate the associations between particulate matter ≤2.5 μm³ (PM(2.5)) and sick leave episodes and 2) calculate the attributable number of sick leave days and the …