A 2005 survey of tenants by an American company ‘ServiceMaster Clean’ found that unclean offices are a major concern of workers and create more sick days:

• 85% of office workers think regularly about the cleanliness of their office.

• Only 29% believe that their offices are being cleaned as effectively as possible.

• 64% of office workers see a connection between a clean building and the number of times they call in sick.

• 69% believe a clean office makes employees more productive.

Source: ‘Unclean offices drive sick days higher.’  Inclean Australia Magazine, 18 (4) 2005.