During the planning stage of an assurance engagement, a payroll clerk informed the internal auditor...

When a payroll clerk informs the auditor of potential issues like adding new employees to the payroll without proper documentation, it is essential to escalate this concern appropriately. The internal auditor should inform the chief audit executive (CAE) of the assertion, as it raises a significant red flag regarding potential fraud or control weaknesses. This step ensures that the CAE is aware of the situation and can decide on the necessary follow-up actions, such as further investigation or adjusting the audit scope to address the risk.

IIA Standard 1220: Due Professional Care

IIA Standard 2120: Risk Management