Final answer:
It is not an employee's responsibility to detain a robber. Employee safety is crucial and they should focus on non-confrontational compliance until law enforcement arrives.
Step-by-step explanation:
No, it is not a food service employee's responsibility to keep a robber from leaving the establishment until the police arrive. The safety of employees and customers is paramount, and attempting to detain a robber can be dangerous. Employees are generally trained to comply with a robber's demands and to prioritize non-confrontational behaviors to minimize risk. It is best practice to provide the police with as much information as possible without putting oneself in harm's way.