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For us, compliance goes beyond mere adherence to laws and regulations. Our mission is to empower businesses to minimize uncertainty, protect their values, preserve their reputation, and secure sustainable success. This is accomplished by seamlessly integrating traditional compliance measures with the company's strategic risk profile.

In the aftermath of significant crises that have eroded trust in the business world both domestically and internationally, authorities have gained a greater willingness and ability to regulate and sanction the private sector. This has led to an increased need for a focus on compliance and risk management in business.

We specialize in identifying, assessing, and managing regulatory and business risks that may impact the company's ability to achieve its strategic goals. Thommessen has extensive expertise and experience in compliance, assisting Norwegian and international businesses in managing compliance challenges in areas such as anti-corruption, sanctions and export controls, anti-money laundering, terrorist financing, human rights, and climate and environment. Our approach is proactive: we guide boards and executive teams to adopt measures that not only minimize uncertainties and safeguard assets but also fortify their reputation and secure a trajectory of sustainable success. It's not just about meeting regulatory requirements – it's also about being a responsible member of society.

In an era marked by rapidly changing geopolitical dynamics, swift technological advancements, and intensifying scrutiny over corporate impacts on society, the environment, and individuals – the role of integrity investigations has become more crucial than ever. We have extensive experience with Integrity Due Diligence (IDD) to investigate aspects such as security risk, reputational risk, and other factors often overlooked in traditional due diligence processes.

With backgrounds from, among others, the Norwegian Police Security Service (PST), National Authority for Investigation and Prosecution of Economic and Environmental Crime (Økokrim), and multinational companies, our lawyers are well-equipped to identify risks and advise on issues that go beyond legal problems. Our goal is not only to ensure that our clients meet current requirements but also that they are prepared for future challenges and opportunities.

We offer an array of services to clients across multiple sectors, including:

  • In-depth risk assessments
  • Crafting, auditing and refining compliance programs
  • Employee training and educational initiatives
  • Managing third-party relations and conducting thorough background checks via Integrity Due Diligence (IDD)
  • Navigating government interactions
  • Dispute resolution
  • Providing strategic guidance on compliance in transactions, contracts, and related areas


  • 2024 Firm to watch Regulatory, compliance and investigations Legal 500

The team