but your upsize , the management perception to the staff is a main factor .for example , many organizations will do appraisal report as a reference for salary advancement , but these reports are often lacking objectivity , in case the relationship between reviewers and employee is not good , or the reviewer has a subjective perception to the employee , it will have a great possibility to join a subjective element , lowered his rating , making him unable to receive proper and reasonable salary and also a suitable position , to our point of view , is a waste of resources , the central system will not allow it happen . ``