Marsh & McLennan Companies, Inc.

Marsh & McLennan Companies, Inc. (MMC), a US-based insurance agencies and brokerages firm, has established comprehensive climate commitments, aiming for net-zero greenhouse gas (GHG) emissions across its value chain by 2050.

For the reporting year 2025, MMC reported total carbon emissions of approximately 298.9 billion kg CO2e. This figure is comprised of Scope 1 emissions totalling approximately 21.1 million kg CO2e, and Scope 2 emissions (market-based) of approximately 7.96 million kg CO2e. Scope 3 emissions were substantial, with purchased goods and services accounting for approximately 342.8 million kg CO2e, and business travel contributing approximately 108.2 million kg CO2e. Employee commute emissions were approximately 77.7 million kg CO2e.

In pursuit of its climate goals, MMC has set a near-term target to reduce absolute Scope 1 and 2 GHG emissions by 50% by 2030, using a 2019 baseline. For the long term, the company aims for a 90% reduction in absolute Scope 1 and 2 GHG emissions by 2050, again from a 2019 baseline. Additionally, MMC commits to reducing Scope 3 GHG emissions from purchased goods and services, capital goods, upstream transportation and distribution, business travel, and employee commuting by 97% per million USD of operating profit by 2050. The company also aims to reduce Scope 3 emissions from purchased goods and services, capital goods, and business travel by 55% per million USD of operating profit by 2030. MMC's commitment to achieving net-zero emissions by 2050 has been recognised by SBTi.