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ARTICLE · 01 JUNE 2026

Internal Investigations: In A Nutshell

Internal investigations serve as a critical compliance tool for organizations to verify their own actions, procedures, and employee conduct. This guide explores how these self-assessment processes differ from external investigations and function as a central mechanism for ensuring integrity and adherence to legal and internal policy requirements.

PortugalCorporate/Commercial Law

1. What does it mean?

Internal investigations have come to play a central role in organisational vocabulary and practice. Recent legislative developments in areas such as fighting corruption, financial fraud, money laundering, harassment and discrimination, lobbying public decision-makers, data governance and cybersecurity have driven the need for organisations to develop their own investigative capabilities. Alongside these legal requirements, institutional and reputational concerns have grown. This growth has been fuelled by high-profile cases of companies and individuals being held accountable for unlawful or unethical actions.

Internal investigations essentially involve verification and self-assessment processes carried out by an organisation concerning its own actions, procedures, and the conduct of its employees, stakeholders, and third parties interacting with the organisation in various capacities. Unlike external investigations, these processes are driven by the

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