Final answer:
Contact your immediate supervisor and the human resources department as your first two contacts for escalation when dealing with threats between associates at the workplace.
Step-by-step explanation:
If you are the overnight sort manager and law enforcement has been called to your station because one associate was threatened by another associate in the parking lot, your first two contacts for escalation should probably be your immediate supervisor and the human resources department.
These contacts are essential in ensuring that the incident is addressed properly and in line with company policy. Your supervisor can provide immediate support and direction, and the human resources department is trained to deal with conflicts and threats in the workplace.
It is important to document all facts related to the incident and communicate effectively to ensure the safety of all associates and the resolution of the situation.