Causes of Employee Attrition :
......Salary Scale
This is the most common cause of the employee turnover rate being so high. Employees are in search of jobs which pay well.
........Benefits
Employees always flock to companies who offer more benefits.
......Advancements and Promotion Policies
This is the prime reason why many mid-level executives leave the company. Due to no potential opportunity for advancements or promotions, they prefer other companies which may provide them with higher posts and increased compensation packages. The companies need to evaluate and modify their promotion policies in a fair way which would enable promotions for candidates only on the basis of employee performance.
......Working Environment
This is also one of the main causes for employee turnover. Employees prefer to work in an environment which is suitable for them. This is the most common reason why they jump from company to company in just a few months. If they find an appropriate work environment in a specific company, they may work in the same organization for several years.
........Working Procedures
The companies should analyze and alter their work procedures and policies in a way which would enable employees to use their full potential and even gain significant work experience. There are many cases where employees have left the company due to no projects or assignments which do not require their full potential. Employees would certainly leave if they don't get experience and are just placed on the 'bench'.
These are some of the principal causes of employee turnover which can surely be avoided by the organizations after taking some necessary steps to better their in-house services towards employees. However, there are many more causes which contribute to employee turnover; such as lack of employee motivation, work pressure, job stress, partiality and favoritism, employee egos and attitudes, poor employee management, etc.
According to the above factors, you have research on this issue.... with a proper questionnaire.