A more senior employee (manager) is bullying 1 employee in specific but maybe 2. Small office setting. Not talking to the employee (ee), excluding ee from office conversations, sending emails to another employee and then the 2 glance at each other and laugh, dumping of work on the ee. When the ee spoke with owner and owner spoke with manager - manager called ee at home and called her an office rat.
Manager then emailed owner and said ee had lied. No hard evidence to go on and the 1 or 2 ees indicate fear of complaining that they pay for it. How do we handle this situation?