Roger Cox runs a broad law practice with a focus on social and corporate transition issues. He is active in these fields as adviser, negotiator, mediator and litigator.

Roger has an international reputation in the field of climate litigation. He is author of a book on the subject, has several (international) publications to his name and is regularly asked by directors, supervisory directors and regulators for advice. As a lawyer, Roger successfully litigated against the Dutch and Belgian governments about the inadequate climate policy of both countries. He also won the climate case against Shell in 2021.

Roger is the founder of the Planet Prosperity Foundation, with which he has been working since 2007 to make society and the economy more sustainable. In 2015 he received the Sustainable Ribbon for his initiatives and in 2016 he was named the most influential person in making the Dutch construction sector more sustainable. Roger was named one of the 100 most influential people in the world by Time Magazine in 2021, and he won the Dresden International Peace Prize in 2022 in recognition of his pioneering work.