Every organization should have a human resources policy. The human resources policy should include the policies and procedure on how to deal with employees, such as how to do reviews, how to request and approve vacations, how to onboard employees, how to terminate employees, how to discipline employees, and other human resource related issues.
They want to know that there is a formalized process for dealing with employees, of particular importance here is the discipline and termination of employees for not following security or data handling policies.
They want to know that people who violate policies that may affect their data or consumed services will be disciplined or terminated.