Hi !
No one can avoid the attrition rate completely in the company.We can take measures to reduce the rate.Proper measures like should be taken care of like facilitating the employees with all the needs required by them in doing their work effectively,maintaing good employee relations,good environment to work in,resolving their issues and involving them in the TQM's and knowing their importance etc.Some people look for a change in company for monetary benifts,big companies,they have problems with the boss,company and colleagues,work timings etc.A HR should try to sort out all these issues and try to maintain a good cordial relations with the employeesfor a comman goal of company's growth.
Have a nice day
rAMu