Andreas Hösli is a Senior Associate in the Corporate/M&A team of Walder Wyss. He is an expert in ESG & Sustainability and advises companies, NGOs and public institutions on all legal issues in this area, with a particular focus on climate change-related legal issues (eg reporting, due diligence, risk management, and contract drafting). Andreas has published extensively on these issues and is a frequent speaker at conferences and workshops. In addition, Andreas has several years of expertise in the areas of litigation, employment law and white-collar crime.

Andreas graduated magna cum laude from the University of Zurich (lic. Iur., 2011). After his clerkship at the District Court of Zurich and his admission to the Swiss Bar in 2014, he worked as an Associate in a top-tier law Swiss law firm. In 2018, Andreas completed an LL.M. degree at the University of New South Wales, Sydney, in 2018 (with excellence). From 2019 to 2024, Andreas conducted his PhD project on Corporate Climate Responsibility (University of Zurich, Visiting Researcher at the University of Copenhagen, the University of Oslo and the University of Bergen), which was supported by the Swiss National Science Foundation. Since 2024, Andreas teaches the course Sustainability Law at the University of Applied Sciences Northwestern Switzerland.

Andreas Hösli speaks German, English, French and Italian. He is registered with the Zurich Bar Registry and is admitted to act before all Swiss courts.

Significant Accomplishments

Schweizerische Post erwirbt Open Systems

Walder Wyss berät die SIX Swiss Exchange bei der Lancierung einer Kennzeichnung für Aktien, die dem Pariser Klimaabkommen entsprechen

Verein KlimaSeniorinnen Schweiz and Others v. Switzerland: the European Court of Human Rights’ Answer to Climate Change
Federal Council Proposes Revision of Swiss Sustainability Reporting Regime
CSRD ante portas – Key Points for Swiss Companies
Die Kunst bei ESG besteht darin, etwas sehr Komplexes auf das Wesentliche herunterzubrechen.
Klimaseniorinnen v. Switzerland – What are the Implications of the ECtHR’s Landmark Climate Decision?
Corporate Climate Litigation: Klageweise Durchsetzung der Klimaverantwortung von Unternehmen? Eine Einordnung
Human Rights Due Diligence – Navigating the OECD Guidelines for Multinational Enterprises on Responsible Business Conduct
The Rise of Climate Change Litigation – What Risks for Swiss Companies?
Introducing the Special Issue on Corporate Law and Climate Change – (How) Can Corporate Law Steer Companies Towards Meeting the Paris Climate Goals?
Heating Up the Boardroom – Klimawandel und der VR
Corporate Climate Responsibility - aktienrechtliche Haftungsrisiken für den Verwaltungsrat?
Climate Change Reporting and Due Diligence: Frontiers of Corporate Climate Responsibility
Mit Cyberrisiken ist zu rechnen
Klimaklagen gegen Unternehmen- Internationale Entwicklungen und deren Bedeutung für die Schweiz
Kompetenzprobleme an der CO2-Front - Die schweizerische Steuer- und Abgabenpolitik wird grüner
Der Klimawandel und die Finanzmärkte - Berücksichtigung von Klimarisiken und -chancen durch institutionelle Anleger in der Schweiz
Ansätze und Umsetzungsmöglichkeiten einer «Fleischsteuer»
Corporate Climate Responsibility - The Rise of a New Governance Issue
Milieudefensie et al. v. Shell: A Tipping Point in Climate Change Litigation against Corporations?
Climate Change Liability: Comparing Risks for Directors in Jurisdictions of the Common and Civil Law