The term Employee turnover is commonly used in corporate circles in todays complex business world. So much research has been conducted on employee turnover and most of them just focused on causes. However, few studies have been done on the sources of factors that work as an accelerator behind this employee turnover, classification of turnover, the impact of turnover, cost of turnover, and strategies to mitigate employee turnover. Employees are the most vital resource and organizations need to understand this. This study tries to explain the causes of employee turnover, the classification of turnover, the impact of turnover and some suggested strategies that can be followed by organizations to reduce employee turnover.