What action should be taken when roof workers are present without notice?

When roof workers are present without notice, verifying their identity and work authorization is the most appropriate action. This step is crucial for several reasons. Firstly, it ensures that the individuals on the roof are indeed authorized to be there and are performing legitimate work. Unauthorized personnel may pose safety risks or security threats, so confirming their identity through proper identification helps maintain the integrity and safety of the premises.

Secondly, verifying work authorization can help prevent legal liabilities associated with trespassing or unauthorized work. It’s essential to know if the workers have the necessary permits or permissions to carry out their tasks, as this aligns with regulatory requirements and protects the property owner.

In contrast, instructing them to leave without verification could create unnecessary conflict and may not be warranted if they are there legitimately. Ignoring their presence poses a significant security risk, as it fails to address the potential implications of unauthorized entry. Contacting the building owner, while potentially useful in some contexts, does not address the immediate need to verify the workers' identity and authorization. Thus, taking the time to validate their credentials is the most responsible course of action.