Jonathan Fraenkel Kærn advises on insurance and tort law, e.g. in connection with the professional liability of advisers, directors' and managerial liability, contractual liability and liability within construction.

In addition, Jonathan advises on general commercial law, including the drafting of all forms of commercial contracts, and he has published the article ET.2013.349 on fraud in contracts under section 30 of the Contracts Act.

Finally, Jonathan advises on energy law and resolution and the preparation of commercial disputes and litigation.