Some quantitative relations between indoor environmental quality and work performance or health

Poor indoor environmental quality (IEQ) has been related to increases in sick building syndrome (SBS) symptoms, respiratory illnesses, sick leave, and loss in productivity. Calculations indicate that the cost of poor IEQ can be higher than energy costs FOR space conditioning and ventilation and that many measures taken to improve indoor IEQ will be highly cost-effective when accounting for the monetary savings resulting from improved health or productivity. To enable building professionals to select of building designs and operating practices that account for effects on health and productivity, we need models for quantifying the health and productivity benefits of better indoor environments. Therefore, we have reviewed the literature on the effects of indoor environment on health and performance and used existing data, when possible, to develop some initial models. Based on the best available evidence, we present quantitative relationships between ventilation rates and short-term sick leave, ventilation rates and work performance, perceived air quality and performance, temperature and performance, and temperature and SBS symptoms. We also show that a relationship exists between SBS symptoms and work performance.