In what situation is the use of physical force justified for a security guard?

The appropriate use of physical force by a security guard is strictly limited to situations where there is an immediate threat to themselves or others. This principle is rooted in self-defense and the protection of individuals from harm, which is a foundational aspect of a security guard's responsibilities.

When a security guard encounters a situation where an individual poses a credible and immediate threat, the use of physical force is justified to prevent injury or escalation of the situation. This aligns with the legal standards governing the use of force, which emphasizes that such actions should be proportional and necessary in response to the threat faced.

In contrast, the other scenarios do not provide a valid justification for the use of physical force. Asserting authority over individuals or enforcing company policies can often be managed through communication and de-escalation techniques rather than physical means. Also, acting solely on a supervisor's request without assessing the appropriateness of the situation can lead to misuse of force, as it lacks the necessary basis in self-defense or protection from harm.