Janusz Tomczak

Advocate / Partner

Advocate, Partner, Head of the Business Crime and Compliance Practice.

Janusz has over 18 years of experience in managing complex, high-stakes business crime matters and internal investigations.

He advises and represents corporate and individual clients in investigations and prosecutions by law enforcement authorities, including domestic and multi-jurisdictional cases.

He blends years of litigation practice with in-depth knowledge of how corporations operate, and the liability borne by top management.

More recently, he has been dealing with high-profile, corporate internal investigations, concerning allegations of fraud and corruption  in companies from the financial, media and wood industries.

Moreover, he has been advising corporate and individual clients on white-collar prosecutions related to allegations of commercial and tax fraud and abuse of trust offences, as well as on compliance and remediation programs to address detected irregularities.

His unique area of expertise concerns offences committed in the workplace, i.e. related to health and safety. 

He serves as an expert witness who gives evidence in  courts regarding the Polish justice system.

He is a member of the International Bar Association (Senior Vice-Chair of the Criminal Law Committee), the European Criminal Bar Association, the European Fraud and Compliance Lawyers Association, and the Extradition Lawyers Association. For many years, Janusz was a judge at the Warsaw and National Bar disciplinary bodies.

He is the chair of the Ius Laboris Expert Group on Internal Investigations and Whistleblowing. 

He is highly regarded in international rankings, such as Chambers Europe and The Legal 500 in White Collar Crime, and Who's Who Legal as a Thought Leader and Global Leader in Business Crime Defence and Investigations.

Chambers Europe 2023 Who's Who Legal
Book publications:
Comparative Law Yearbook International Business: Regulatory Compliance: International Perspectives The Comparative Law Yearbook of International Business Volume 41