According to a CareerBuilder survey, 75 percent of employers said they have hired the wrong person for a position, and of those who had a bad hire affect their business in the last year, one bad hire costs them nearly $17,000 on average. And while most employers (72 percent) background check every new employee before they are hired, more than 1 in 4 (28 percent) do not.

"If an employee isn't well-suited for the job or has a bad attitude, the time they spend not working could significantly impact your bottom line. That's why it's so important to make sure qualifications are substantiated," said Ben Goldberg, CEO of Aurico, a CareerBuilder company. "It's a hard cost to quantify, but it adds up when you consider the loss of employee morale, the additional supervision that employee needs, productivity loss for the organization, revenue that's not being generated and client relationships that could be turning sour as a result of bad impressions."