The most effective approach for an internal auditor to assess whether the organization supports a culture of tolerance and open communication, particularly in the context of reported issues within a large manufacturing plant, is to evaluate organization policies and procedures for references related to encouraging tolerance and open communication. This method directly targets the formal expressions of the organization ' s values and rules, offering concrete evidence of stated commitments and practices.

Auditing cultural aspects and workplace environment involves reviewing formal policies and procedures to ensure they align with stated values, as recommended in IIA guidance on assessing organizational culture.