Disadvantages of BARS:
a. It is very time consuming and expensive to develop BARS for the every job.
b. Behaviours used are more activity oriented than result oriented. Several appraisal forms are required to accommodate different types of jobs in an organization.
c. A specific deficiency is that the behaviours used are activity oriented rather than result oriented. This creates a potential problem to deal with employees who are performing the activity but not accomplishing the desired goals.