2023 ESG Report

Empowering Sustainable Futures

In 2023, we have moved beyond commitments to taking action.
As stakeholders have deepened their understanding of ESG issues, expectations for public companies have shifted. Companies are expected to proactively navigate ESG risks by taking concrete steps to build resilience at all organizational levels. We have moved beyond commitments to taking action.

Message From Our ESG Committee Chair

Dear colleagues, clients and shareholders,

Throughout 2023, the global risk landscape continued to evolve rapidly. The year saw breakthroughs in artificial intelligence, along with rising geopolitical tensions, growing cyber threats from malicious actors and numerous extreme weather events.

At the same time, the approach to environmental, social and governance (ESG) topics became increasingly complex against this backdrop. As stakeholders have deepened their understanding of ESG issues, expectations for public companies have shifted. Companies are expected to proactively navigate ESG risks by taking concrete steps to build resilience at all organizational levels. We have moved beyond commitments to taking action.

Our board collaborates with management on shaping ESG strategy, providing insights and perspectives on emerging risks and evolving stakeholder views on an ongoing basis throughout the year. In 2023, we endorsed management’s submission to the Science Based Targets initiative and management’s decision to conduct an ESG double materiality assessment to identify priority ESG topics in our rapidly changing environment.

This year’s report builds on previous disclosures to show how Marsh McLennan is taking action, whether by adding capabilities for clients, making progress toward commitments, expanding disclosures or, in some cases, staying the course. There is much to be proud of in Marsh McLennan’s performance, and we are delighted to present that progress in this year’s ESG report.

Sincerely,

Lloyd Yates

Chair, Board ESG Committee, Marsh McLennan

Message From Our President & CEO

Dear colleagues, clients and shareholders,

Every day at Marsh McLennan, our more than 85,000 colleagues around the world help clients and communities see possibility and seize opportunity. With our specialized capabilities and expertise, we’re uniquely positioned to deliver actionable solutions that address their challenges—including

those that sit within the broad parameters of environmental, social and governance (ESG).

We help our clients clarify the complex so they can make critical decisions with confidence on issues related to everything from building climate resilience to expanding workplace diversity. The scope of this work – and the successful outcomes we help enable for our clients – often extends to communities and societies around the world.

And we hold ourselves to a high standard by modeling the behaviors we want to see in the world.

In 2023, for example, we submitted climate goals to the Science Based Targets initiative for validation as part of our commitment to achieve net-zero emissions across our global business operations by 2050. We have a strong enterprise risk management strategy in place, and our more than 85,000 colleagues around the world share one code of conduct. And knowing that different perspectives and backgrounds make our company stronger, more innovative and more reflective of the clients we serve, we continue to analyze and share more granular diversity representation data.

No company, industry or government can create change on its own. Addressing complex challenges such as climate change will require new partnerships, deeper trust and collaborative approaches.

It’s a privilege to contribute to collective action on global challenges, and the ESG progress outlined in this report is a testament to the extraordinary work our colleagues do every day to enable success for our clients and communities.

We look forward to the important work ahead, engaging with our colleagues, clients, shareholders, communities and governments around the world to meet challenges, build resilience and find opportunity.

All the best,

John Doyle

President and Chief Executive Officer

Empowering Sustainable Futures


2023 ESG Report

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Environment
By making our operations more sustainable, supporting our clients on their sustainability journeys and sharing our powerful perspectives, we are helping enable the transition to a low-carbon economy. Our committed partnerships, unique expertise and actionable solutions are a distinct advantage as we address the challenges and opportunities ahead.
Highlights

Our Belgium office facilitated the installation of a 222-panel on-site solar array by bringing together a Marsh client and solar panel supplier and the new building owner, which has produced over 48,000 kWh of clean electricity from June 2023 to December 2023.

Highlights

Our Belgium office facilitated the installation of a 222-panel on-site solar array by bringing together a Marsh client and solar panel supplier and the new building owner, which has produced over 48,000 kWh of clean electricity from June 2023 to December 2023.

Internal

  • Submitted our climate targets to the Science Based Targets initiative for validation.
  • Continued to renewable energy across our operations, leading to a 45% reduction in Scope 1 and 2 emissions since 2019.
  • Endorsed the Mangrove Breakthrough with Oliver Wyman to promote the protection and conservation of mangrove habitats.

External

  • Conducted a climate resilience analysis for the Dubai Energy and Water Authority’s Mohammed bin Rashid Al Maktoum Solar Park, the largest single-site solar park in the world.
  • Received Insurance Insider’s Brokering Innovation of the Year award for our role in the first community-based catastrophe insurance pilot with the Center for NYC Neighborhoods.
Social
Our people are the foundation of everything we do. We believe growing together—our people and our businesses—will lead to long-term success. Our strategy to foster an agile and connected workforce is based on four pillars: inspiring leadership, building a vibrant and inclusive culture, providing opportunities to learn and grow, and creating a great colleague experience. We’re also supporting our clients in shaping their workforce needs for today, tomorrow and the future.
Highlights

Marsh McLennan colleagues in Mexico volunteered at an elementary school in Mexico City through Pro Education I.A.P., whose mission focuses on improving the quality of education in public primary schools. Colleagues helped improve the green areas to create a better environment for the students who attend.

Highlights

Marsh McLennan colleagues in Mexico volunteered at an elementary school in Mexico City through Pro Education I.A.P., whose mission focuses on improving the quality of education in public primary schools. Colleagues helped improve the green areas to create a better environment for the students who attend.

Internal

  • Earned an 80% favorability score on our annual all-colleague survey.
  • Launched @YourBest, our well-being strategy encompassing regional programming, services and a technology platform that all colleagues can access.
  • Recognized by Business Insurance as its US Community Outreach Project of the Year for our Social Justice Double Match program.

External

  • Hosted the Equity = Possibility Black Leaders Symposium on Enabling Resilience in a Changing World, which brought together more than 100 Black senior executives and leaders to discuss their most pressing business challenges and opportunities.
  • Partnered to support Ukraine in its recovery and reconstruction through placing Black Sea grain insurance and developing a long-term stabilization plan
Governance
Our ESG initiatives are built upon our dedication to strong governance. We are committed to upholding best practices in corporate governance, conducting ourselves ethically, and earning and keeping the confidence of our shareholders.
Highlights

President and CEO John Doyle was a keynote speaker and moderated a C-Suite panel at a joint conference hosted by the NYU Stern School of Business Volatility and Risk Institute and the U.S. Department of the Treasury’s Federal Insurance Office

Highlights

President and CEO John Doyle was a keynote speaker and moderated a C-Suite panel at a joint conference hosted by the NYU Stern School of Business Volatility and Risk Institute and the U.S. Department of the Treasury’s Federal Insurance Office

Internal

  • Conducted an ESG double materiality assessment of Marsh McLennan to inform priorities and strategy.
  • Enhanced engagement with our stockholders, including with the governance and/or ESG teams of our institutional shareholders.
  • Launched LenAI, a new generative AI tool for colleagues to streamline processes and expedite time-consuming tasks, such as summarizing meetings, drafting emails and extracting key data from documents.

External

  • Participated in advanced conversations on cyber resilience from catastrophic cyber events and whether there is a need for a federal cyber backstop.
  • Partnered with the World Economic Forum to produce the Global Risks Report 2023, which paints a picture of the most-pressing short- and long-term risks facing our world.
  • Partnered with specialty insurer Beazley to reward positive ESG performance in the construction sector by providing access to additional professional indemnity cover.