The rise in frequency and severity of drought, flood, wildfire, heat, severe conductive storms and other climate-related events has far-reaching implications for people, communities and assets globally. Climate adaptation and resilience will be imperative as organizations seek to protect their workforce and operations, deliver on global objectives and accelerate the energy transition.
Marsh McLennan's expert perspectives and actionable solutions enable clients to identify, assess and respond to climate-related challenges — and find resilience and sustainable growth in a dynamic environment.
Our capabilities
How we can help you
Marsh McLennan has the scale and reach to support clients with risk, strategy and people challenges related to climate events, through the following capabilities:
Leader in risk management and insurance broking
Marsh provides innovative risk management solutions for people, assets, and communities affected by climate-related events.
Leading reinsurance intermediary and advisor
Guy Carpenter helps optimize catastrophe response, assess impact and support the claims process.
Leader in shaping the future of work and investment
Mercer helps clients integrate and communicate sustainability ideas across their business.
Leading international management consulting firm
Oliver Wyman manages climate transition challenges and gives clients a competitive edge.
Achieving Resilience Breakthroughs
Across our four global businesses, we’re dedicated to empowering our clients to achieve transformative breakthroughs in climate resilience and adaptation. Our mission is anchored in a holistic risk management approach that seamlessly integrates risk finance with climate adaptation, paving the way for robust resilience strategies.
Our focus is on delivering financially sustainable solutions that safeguard individuals and organizations against both present threats and future uncertainties. This multifaceted approach encompasses three key elements: risk assessment, risk adaptation and risk financing, all tailored to meet the unique challenges of each region and risk profile. By helping clients proactively address vulnerabilities and foster resilience, our approach not only mitigates adverse impacts but also can unlock new opportunities. This strategic foresight enables clients to minimizes disruptions, enhances revenue potential and reduces future costs.
Explore more about our latest resilience breakthroughs here:
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Read MoreTool Identifying the climate events that are impacting employees and employer healthcare costs is an important step in protecting workforce health and resiliency.Climate Health Cost Forecaster
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Read MoreReport As climate change accelerates, extreme heat events are becoming more frequent and severe, posing significant risks to communities, infrastructure, and economiesTackling the heat challenge
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Read MoreProduct Sentrisk, our AI-powered platform, helps you transform your supply chain risk exposures into business opportunities through best-in-market data capabilities.Sentrisk
Our offerings
Addressing climate risks with Marsh McLennan
Explore a selection of our offerings or get in touch to learn more about our comprehensive suite of solutions.
Take control of your supply chain with Sentrisk
Our AI-powered platform integrates best-in-market data capabilities and decades of risk expertise, empowering companies to take control of their supply chain risk, given the ways existing and emerging climate challenges can impact and disrupt supply chain operations.
Our thought leadership
Related Insights
Stay informed with the latest insights and thought leadership from Marsh McLennan and our businesses. Our experts share their knowledge on how climate events are transforming the world as we know it, offering strategies and solutions to identify, assess and respond to climate risk.
Identify
Enhance your organization’s understanding of climate-related challenges by defining potential risks and their impacts on people, operations and assets.
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Read MoreGuy Carpenter CAT Resource Center
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Read MoreGlobal Risks Report 2025 The 20th Global Risks Report, with Marsh McLennan’s strategic support, offers insights from 900+ experts to help identify and prepare for pressing global risks.Understand the top global risks for 2025 and beyond
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Read MoreReport Pathways to adapt people, systems and economies from extreme heat riskTurning down the heat
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Read MoreReport In today’s interconnected and volatile world, supply chain risks are on the rise.Climate resilience: 5 steps to strengthen supply chains
Assess
Evaluate the implications of climate-related events, using risk quantification, modelling and data to develop and inform risk mitigation, management and transfer strategies.
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Read MoreState of Flood Report 2025 The 2025 State of Flood report delivers a powerful call to action in the face of escalating flood risks across the United States.2025 State of Flood Report
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Read MoreMercer How can investors support climate transition across portfolios?Road to COP 29: Transition today ─ a progress update
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Read MoreReport Fostering growth and building resilience in a changing worldHow a holistic risk approach increases resilience
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Read MoreMarsh Organizations seek to quantify wildfire risk through various approachesLiability concerns lead to more wildfire modeling
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Read MoreOliver Wyman How environmental intelligence can enable climate actionEnvINT informs decisions on climate resilience
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Read MoreGuy Carpenter 2024 North Atlantic Hurricane Season Review
Respond
Address urgent climate-related challenges with the support of expert perspectives and actionable solutions from Marsh McLennan’s combined businesses.
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Read MoreMercer Discover trends and opportunities for sustainable investments.Investing sustainably
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Read MoreMarsh McLennan Find insights, guidance and tools to help your organization navigate increasing climate-related risks and support your workforce in times of crisisDisaster Resource Center
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Read MoreMarsh Driving adaptation to a changed climate can avoid business disruption, boost revenue and save future costsGlobal climate resilience hub
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Read MoreOliver Wyman How companies can convert climate challenges into opportunitiesTurning climate intent into action
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Read MoreGuy Carpenter With 2023 being the world’s warmest year on record, it has never been more important to consider climate risk and building resilience.Climate resilience relies on managing risks