It has been shown that flickering fluorescent lights, even if imperceptible, can cause headaches in some people of all ages. HVAC Fresh air and proper temperature can also improve workers' well-being and productivity. Building HVAC systems control four factors identified as contributing to comfort. Keeping the relative humidity at 50 percent has proven to be a good balance. Radiant temperature changes near windows can be controlled through glazing treatments or blinds, both external and internal.
Blinds also block sunlight, which is often a source of glare on computer monitors.
The amount of air flow, or exchanges per hour, needed to keep air fresh depends somewhat on the number of people occupying the space. Maintaining thermal comfort reduces the chance for one type of distraction often leading to interruption of work flow. The practice of ergonomics extends beyond the immediate workstation. Modern offices see more projects being completed by groups. Working in groups requires tight coordination of efforts and schedules.