The Sick building syndrome reference article from the English Wikipedia on 24-Apr-2004
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Sick building syndrome

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Sick building syndrome (SBS) is a combination of ailments (a syndrome) - including headaches, tiredness, itchy or sore eyes, throat and skin, body pains, irritability - usually associated with an individual's place of work (typically, but not always, an office building), though there have also been instances of SBS in residential buildings.

The contributing factors often relate to the design of the built environment, and may include combinations of some or all of the following:

To the owner or operator of a "sick building", the symptoms may include high levels of employee sickness or absenteeism, lower productivity, low job satisfaction and high employee turnover.