Marsh & McLennan Companies, Inc.
Marsh & McLennan Companies, Inc., often referred to as MMC, is a leading global professional services firm headquartered in the United States. Established in 1905, the company has evolved into a powerhouse in the insurance, risk management, and consulting sectors, with significant operations across North America, Europe, and Asia-Pacific. Specialising in risk, strategy, and people, MMC offers a diverse range of services through its well-known subsidiaries, including Marsh, Guy Carpenter, Mercer, and Oliver Wyman. These entities provide unique solutions tailored to meet the complex needs of clients, from insurance brokerage to human resources consulting. With a strong market position, Marsh & McLennan is recognised for its innovative approach and commitment to excellence, consistently achieving notable milestones in the industry. The firm’s dedication to delivering value and insights has solidified its reputation as a trusted partner for organisations worldwide.
DitchCarbon Score
How does Marsh & McLennan Companies, Inc.'s carbon action stack up? DitchCarbon scores companies based on their carbon action and commitment to reducing emissions. Read about our methodology to learn more.
Industry Average
Mean score of companies in the Business Services industry. Comparing a company's score to the industry average can give you a sense of how well the company is doing compared to its peers.
Industry Benchmark
Marsh & McLennan Companies, Inc.'s score of 82 is higher than 91% of the industry. This can give you a sense of how well the company is doing compared to its peers.
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Marsh & McLennan Companies, Inc.'s reported carbon emissions
In 2024, Marsh & McLennan Companies, Inc. reported total carbon emissions of approximately 688,000,000 kg CO2e, with significant contributions from Scope 3 emissions, which accounted for about 662,000,000 kg CO2e. The breakdown of emissions includes 18,865,000 kg CO2e from Scope 1 and 16,038,000 kg CO2e from Scope 2 (market-based). The company has set ambitious climate commitments, aiming for net-zero carbon emissions across its global operations by 2050, with a near-term target of reducing absolute Scope 1 and 2 greenhouse gas emissions by 50% by 2030 from a 2019 baseline. In 2023, Marsh & McLennan's emissions were reported at approximately 498,000,000 kg CO2e for Scope 3, with Scope 1 and 2 emissions at 23,637,000 kg CO2e and 34,298,000 kg CO2e, respectively. The company has also committed to reducing Scope 3 emissions from purchased goods and services, capital goods, and business travel by 55% per million USD of operating profit by 2030. Marsh & McLennan's long-term targets include a 90% reduction in absolute Scope 1 and 2 emissions by 2050, alongside a 97% reduction in Scope 3 emissions per million USD of operating profit. These targets are aligned with the Science Based Targets initiative (SBTi) and reflect the company's commitment to sustainable practices within the professional services sector.
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| 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | |
|---|---|---|---|---|---|---|---|
| Scope 1 | 19,158,500 | 00,000,000 | 00,000,000 | 00,000,000 | 00,000,000 | 00,000,000 | 00,000,000 |
| Scope 2 | 75,126,200 | 00,000,000 | 00,000,000 | 00,000,000 | 00,000,000 | 00,000,000 | 00,000,000 |
| Scope 3 | 73,780,300 | 000,000,000 | 00,000,000 | 0,000,000 | 000,000,000 | 000,000,000 | 000,000,000 |
Industry emissions intensity
Location emissions intensity
Reduction initiatives & disclosure networks
Companies disclose and commit to reducing emissions to show they are serious about reducing emissions impact over time. They can also help a company track its progress over time.
Marsh & McLennan Companies, Inc. is participating in some of the initiatives that we track. This may change over time as the company engages with new initiatives or updates its commitments. DitchCarbon will update this information as it becomes available.
