Have professional managers.
All new staff members deserve to have adequate training..
All employees need to be given access to upper management to prevent arbitrary discrimination from local supervisors who prevent front line staff from addressing issues of possible discrimination based on age, gender, etc.
This particular branch was obviously undergoing some problems.
I regret I landed there at the time I did.
Ask low level management why kept hiring people for two months and 29days,working lots OT if he or she was not suitable for the positions.
Review low level management performance