Defining the link between indoor environment and workplace productivity in a modern UK office building.

Most studies linking indoor environments and productivity have been conducted in controlled, static conditions often unrepresentative of the real world. This paper uses a case-study-based, real-world approach to empirically investigate the link between indoor environment and workplace productivity in a mechanically-ventilated office environment in southern England. Environmental parameters were monitored continuously. Transverse and longitudinal surveys recorded perceptions of the working environment and self-reported productivity. Performance tasks provided proxy measures of performance. Productivity was perceived to decrease when occupants perceived thermal discomfort and stuffy air. Correlations with perceived changes in productivity were stronger for perceived rather than measured environmental conditions, implying occupants' subjective feelings impacted perceived productivity more than objective environmental conditions. Task scores were 15% lower when conducted at CO₂ levels above 800 ppm compared to below 800 ppm. Insights from the study can help to optimize indoor office environments and improve workplace productivity. [ABSTRACT FROM AUTHOR]