Customers rate their satisfaction with a company largely on their relationship with its employees.  Customers may think they are purchasing inferior products or receiving diminished services because of the change in personnel.  They may attribute this to lower staffing levels or lack of morale and motivation on the part of the remaining employees. If businesses lose customers due to high attrition rates, this naturally impacts the bottom line.  One study concluded that high attrition rates impacted one company’s profitability by as much as 400 percent.  They looked at different branches of a temporary help services firm.  The branches with the highest attrition rates tended to be about four times less profitable than those with the lowest attrition rates. When an employee leaves, a company may spend as much as one-fifth of that employee’s salary to replace that employee.  If a business experiences a high rate of attrition, this can represent a significant cost.  Productivity losses when someone leaves, the cost of hiring and training a new employee and slower productivity until the new worker learns the job contribute to these costs.  Companies can avoid these expenses by implementing policies that improve employee retention.  Workplace flexibility, accrued sick time and paid family leave may help reduce loss of employees.

How would you rephrase that briefly using Vietnamese?
Tỷ lệ nghỉ việc quá cao có thể làm hỏng thương hiệu của công ty. Tỷ lệ nghỉ việc ảnh hưởng đến kết quả kinh doanh. Cải thiện tỷ lệ giữ chân nhân viên có thể giúp doanh nghiệp tiết kiệm nhiều tiền.