A personnel practice used by some in corporate America includes eliminating the lowest performing 10% of the workforce each year. Although this may be efficient it certainly overlooks many factors like poor management and good people being asked to do the wrong job.
In Ezekiel 34 God has called us to lead as shepherds, rather than tyrants. In verse 4 He condemns the heavy handed when he says, “You have not strengthened the weak or healed the sick or bound up the injured. You have not brought back the strays or searched for the lost. You have ruled them harshly and brutally.”
If you manage people, love them individually as a compassionate shepherd would, rather than treating them as a tool to be discarded when you no longer need it.