Climate change and sustainability services

To survive and grow in an increasingly competitive and accountable business environment, organizations are required to work on and report not only on their financial performance, but also their nonfinancial performance.

EY’s global Climate Change and Sustainability Services (CCaSS) teams understand the evolving pressures surrounding these challenges. As a result, they can help companies to respond by understanding and evaluating the broader value impacts and outcomes, identifying the opportunities, and supporting the reporting of nonfinancial performance risks to their stakeholders.

CCaSS teams can support you in various topics:

Please refer to the below section “How EY can help” to access more detailed descriptions of our services.

Featured Thinking

Navigating the EU Omnibus Simplification Package: CSRD

Dr. Mark Veser 11 Mar 2026

Our latest thinking

Sustainability-integrated operating model

Our interdisciplinary team can help your business effectively embed sustainability in your operating model from finance to R&D, from risk to HR, from IT to sales. Find out how.
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Sustainability assurance services

Our CCaSS teams can help guide your organization through ESG reporting and support it with limited and reasonable assurance. Find out how.
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Climate and decarbonization

Supporting organizations with physical and transition risks associated with climate change, and assisting them with market and regulatory changes.
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Nature and biodiversity services

EY teams can help your business to manage your nature-related risks and opportunities. Learn more.
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Environment, health and safety

EY CCaSS teams can help reduce the risk of EHS incidents and support decision-making to improve outcomes associated with EHS. Find out how.
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ESG and sustainability for Financial Services

EY teams can help address ESG and sustainability issues, investor concerns and improve ESG performance. Find out how.
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ESG Reporting and Technology

Build stakeholder trust and reputation through strong governance, robust data reporting processes and communication.
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Related news and podcasts

What the first year of CSRD reporting reveals: key insights and trends

Analysis reveals common patterns, outliers and specific trends by sector and country in sustainability statements. Learn more

Dr. Christian Orth + 1

Why integrating sustainability is everybody’s business

The podcast discusses the value of embedding sustainability throughout the organization. Listen now.

38m 21s

EY Webcast: Omnibus simplification package – Way forward on Sustainability Reporting and Due Diligence

The Omnibus Simplification Package (“Omnibus”) is part of the European Commission's commitment to reduce wider sustainability reporting burdens.

Understanding the EU Omnibus proposal: key insights and resources

Learn more about the recently announced EU Omnibus proposal.

Stephan Geiger

The team

Dr. Mark Veser

Partner, Head Climate Change and Sustainability Services | EY Switzerland

Sustainability leader, ESG expert. Family man, off-the-beaten-path traveler, squash enthusiast.

Zurich, Switzerland

Cyril Motte

Partner, Financial Services Head Climate Change and Sustainability I EY Switzerland

Trusted advisor, empathetic and inclusive leader passionate about providing long term value to the financial sector.

Geneva, Lancy, Switzerland

Laura Meadwell

Partner, Sustainability Assurance Leader, Climate Change & Sustainability Services | EY Switzerland

Leading EY’s sustainability assurance practice, my mission is to protect the planet, people, and investors by ensuring data integrity and transparency in sustainability reporting. A Canadian CA with 10 years working in Switzerland. Married, mother of two. Yogi and outdoor sports enthusiast. Passionate about mentoring, gender equality and a just climate transition.

Lausanne-Malley, Switzerland

Stephan Geiger

Partner, Climate Change and Sustainability Services, Ernst & Young AG

Trusted advisor on the sustainability agenda. Project lead on various regulatory transformation and governance projects. Passionate about family, sports, mountains and the ocean.

Zurich, Switzerland

Alberto Zampella

Partner, Climate Change and Sustainability Services, Head Digital Sustainability Solutions | EY Switzerland

Empowering a sustainable future through innovative digital solutions, bridging technology and environmental, social and governance stewardship for a better tomorrow.

Zurich, Switzerland

Raphael Rutishauser

Partner, Climate Change & Sustainability Services | EY Switzerland

30 years in corporate sustainability. Traveler and cyclist: loves to combine the two. Classical music enthusiast.

Zurich, Switzerland

On the agenda (4)

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Climate-related Reporting

Featured: How will investing in sustainable IT cut your costs in the long term?

Environment, health and safety issues

Featured: How will understanding climate risk move you from ambition to action?

Sustainable development goals

Featured: If financial health is key to hospitals’ success, is your treasury fit?

Nonfinancial and Integrated Reporting

Featured: What makes today’s climate leaders tomorrow’s business leaders?

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Careers at EY

At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you.

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EY refers to the global organization, and may refer to one or more, of the member firms of Ernst & Young Limited, each of which is a separate legal entity. Ernst & Young Limited is a Swiss company with registered seats in Switzerland providing services to clients in Switzerland.