Mark Zimmer is a partner in the Munich office of Gibson, Dunn & Crutcher.

As a certified lawyer for labor law, Mr. Zimmer advises companies on all employment-related matters. He represents his clients in particular in connection with reorganizations, mergers and acquisitions, as well as the hiring and separation of executives.

A special focus of his practice is compliance, especially the detection of and reaction to fraud, corruption and similar violations. Mr. Zimmer has developed particular expertise in conducting complex internal investigations for multi-national companies. Especially noteworthy is his key function during the Siemens Compliance Monitorship.

Handelsblatt / The Best Lawyers™ 2022/2023 have recognized him among Germany’s best lawyers for Labor and Employment Law, Corporate Governance and Compliance, Litigation and Criminal Defense. The Legal 500 Deutschland 2023 and The Legal 500 EMEA 2022 recommend him for Compliance, Internal Investigations and Dispute Resolution – Commercial Litigation. Kanzleimonitor 2019/2020 listed him as recommended lawyer for Labor Law. JUVE Handbook 2018/2019 recognized Mr. Zimmer as “frequently recommended” for Labor Law. Chambers Europe also regularly ranks him among the leading lawyers in Germany for labor and employment, citing clients who report that he is “very passionate about his work, with a good sense of new trends and what is important to companies”, “extremely keen to find a practical solution” and “always well prepared with legal matters”, and that he has “great legal technical capabilities, but is able to translate that into pragmatic business advice.” Clients described him as “precise and practical” (The Legal 500 EMEA 2018).

Mr. Zimmer regularly publishes on labor law and compliance related matters. In addition to numerous lectures, he has distinguished himself through two teaching assignments at the University of the German Armed Forces in Munich and the Augsburg University of Applied Sciences.

Besides his native German, he is fluent in English and also speaks French and some Arabic.