Employees working in green buildings (defined as being LEED-certified at any level or bearing the Energy Star label) are more productive than those working in non-green buildings, according to a study by the University of San Diego’s Burnham-Moores Center for Real Estate and real estate services company CB Richard Ellis. Researchers surveyed tenants in 154 green buildings nationwide and measured sick days and self-reported productivity changes after moving into a new building. Forty-five percent of respondents reported taking an average of 2.88 fewer sick days at the new, green office, while an equal number noted no effect. Ten percent, all of whom were residents of Energy Star-labeled buildings but not LEED-certified spaces, reported more sick days. The full study is online at usdrealestate.com.