Conducting Effective Internal Investigations: A Comprehensive Guide

Internal investigations have become a critical function for many organizations. Whether prompted by employee complaints, regulatory requirements, or management concerns, investigations must be conducted with care.

When to Investigate

Clear triggers include:

• Employee complaints of harassment or misconduct
• Suspected financial irregularities
• Violations of company policy
• Regulatory compliance concerns
• Allegations of management misconduct
• Customer complaints involving potential legal violations

Structuring the Investigation

Define the scope clearly to prevent fishing expeditions. Select the right investigator — internal investigators offer familiarity and lower cost, while external investigators offer independence and privilege protection. Establish clear timelines; most investigations should complete within 30-60 days.

Conducting Interviews

Determine interview order (typically witnesses before the accused). Prepare questions in advance. Create consistency. Document thoroughly. Listen more than you talk. Ask open-ended questions before specific ones. Don't assume guilt — gather facts.

Privilege Considerations

To maximize attorney-client privilege protection:

• Retain investigators through counsel
• Have counsel direct the investigation
• Limit distribution of reports
• Clearly mark documents as privileged
• Avoid sharing details unnecessarily

Findings and Recommendations

Investigation conclusions should be evidence-based:

• Sustained — sufficient evidence
• Unsubstantiated — insufficient evidence
• Exonerated — evidence disproves allegation
• Inconclusive — insufficient to determine

Common Mistakes

Inadequate confidentiality, incomplete documentation, predetermined conclusions, failing to address systemic issues, and inadequate follow-up are the most common pitfalls.