As many as a third of U.S. employees say they've left a job as a result of sub-standard workplace conditions, including everything from musty carpets to windowless offices, a recent survey found.

According to Blumberg Capital Partners, a Coral Gables, Fla.-based investment strategy firm that received over 5,000 responses to a nationwide workplace survey, complaints ranged from a lack of basic office amenities to unusable bathrooms, insect infestations, and other serious problems. 

The survey also showed a strong link between workplace conditions, productivity and job retention.

By region, employees in the Northeast tended to be the most satisfied with the conditions in their office buildings, while those in the South were more likely to complain about rodents and insects in the office.