Sick building syndrome and Building related illness are terms used to describe the negative health effects and illnesses directly related to the time spent in a building. Lawsuits directed at building owners have become more frequent as people realize that there is a relationship between poor indoor air quality and the illnesses it may cause. In the workplace and school, increasing health problems will result in decreasing productivity and attendance. Studies have shown that pollutant levels indoors are often 2-5 times higher than those found outdoors.