
Advising across all areas of employment law and noted for its strength in litigation, complex reorganisations and whistleblowing matters, Advokatfirmaet Thommessen AS is praised for its ‘strong expertise’ that makes ’the individuals stand out’. One such individual is department head Stein Kimsås-Otterbech, who consistently advises on changes in listed companies and matters involving reputational risk. Another key individual is Tron Dalheim, who is a seasoned litigator active in the oil, energy and aviation sectors. Promoted to partner in January 2024, Anders Sundsdal has a broad practice that extends to litigation, redundancy processes and transactions. Other key individuals are Håkon Berge, who heads up the Bergen practice; Alexandra Refsnes, who takes point on working time arrangements and undertaking transfers; and Jostein Opdahl-Jenssen, who is recommended for data privacy matters.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Client satisfaction: NPS ®
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Stein Kimsås-Otterbech
Other key lawyers
Tron Dalheim; Anders Sundsdal; Håkon Berge; Alexandra Refsnes; Jostein Opdahl-Jenssen
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Comparative Guide
Private Equity
Norway
Hans Cappelen Arnesen, Christian Grüner Sagstad, Lars Eirik Gåseide Røsås & Øyvind Mork Karlsen
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Patent Litigation
Norway
Camilla Vislie, Eirik W. Raanes, Magnus Hauge Greaker & Andreas Stabell
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Tax
Norway
Marius Holm Rynning & Tobias Doeland Svinterud
Comparative Guide
Litigation
Norway
Per Ole Svor, Arne Hellesylt, Kristine Hyldmo Bjørnvik, Eirik W. Raanes & Nanette Arvesen



