If you can identify legitimately bad employees, fire them; they are not just a waste of money but an anchor around the neck of the employees who aren't bad.
Of course, this assumes a lot of things such as that you have USA/California style "at will" employment, you are capable of determining that the employee(s) in question are legitimately bad and not just hamstrung by stupid process or demoralized due to reasons you could reasonably fix, etc.
Of course, this assumes a lot of things such as that you have USA/California style "at will" employment, you are capable of determining that the employee(s) in question are legitimately bad and not just hamstrung by stupid process or demoralized due to reasons you could reasonably fix, etc.