Different people leave their jobs for different reasons. A recent survey conducted on the Web sites CareerWomen.com, DiversitySearch.com, and at MBACareers.com found that women aren't satisfied with their current job because of lack of "fit" with company, while MBAs are looking elsewhere due to lack of career advancement opportunities. Diversity employees, however, state that their working relationship with their boss is the most significant reason for lack of satisfaction in the workplace. Overall, more than 50 percent of those surveyed were interested in seeking new opportunities.
Source: QuintZineSearch for Jobs