Simply replace the unfilled areas such as "" and "[date]" with your information.
RE: Warning – Inappropriate Behavior/Discipline
Consider this letter to be your final warning that the behavior you demonstrated on [date] is not acceptable and will not be tolerated. It was inappropriate for you to [act/scream/push/swear, ect.] your co-workers. That was far from professional and is certainly not in compliance with our company policies and procedures.
Please be aware that any future incidents of this misconduct on your part will be reason for [disciplinary action/dismissal/etc.].
Employees's signature __________________________ and Date:___________________