In this type of profession, the employee turnover is from 3 to 5 months as reported by a recent nationwide survey. However, a lot of companies have turnover rates better than the average. It's crucial that cleaning service businesses hire the best possible workers and then do all they can to hold on to them. “A successful contractor recognizes that the most important asset in their organization is their employees,” says Peter Criville, president of Shellville Services Inc., in King of Prussia , Pa. “They are the method by which they provide their service, and they create the first and usually lasting impression with customers, which becomes the cornerstone of the company's reputation.”