This did not happen to me, but to a family friend who works as a waiter. I'm researching, should I fall into a similar situation:
A customer and the waiter get in an argument, to which the customer responds by throwing scalding coffee into the waiter's face, burning him. The coffee was hot enough to cause 2nd degree burns, think painful peeling sunburn from forehead to neck, lasting for a few weeks.
After the incident, the employee tried to get the ID of the assailant to sue him, but he fled before police could arrive, and he hasn't been seen again.
My question is: What could the waiter have legally done to secure the assailant's ID? Could he use force to subdue and detain them? And would he be legally protected against their employer disciplining them for taking these measures?