ESG @ Marsh McLennan

Accelerating Impact

Download 2021 ESG Report >


Marsh McLennan’s more than 80,000 colleagues continue to confront many of the most complex ESG challenges of our time, on behalf of clients and the larger society that surrounds us all. We are pleased to highlight examples of what the company has accomplished to date and share aspirations for a sustainable future.

We made progress against our 2021 climate commitments and have made new commitments in 2022, including our intention to become net-zero across our operations globally by 2050.
Dan Glaser, President and CEO, Marsh McLennan


The next decade will require significant action across all business sectors to mitigate the impacts of a warming world. Marsh McLennan is focused on developing solutions to help keep the projected global temperature increase to 1.5°C, and helping our clients embed pragmatic strategies to adapt and prepare for these changes.

From navigating the transition to a resilient, low-carbon economy to managing the physical risks associated with extreme weather events, Marsh McLennan is helping evolve commerce while applying this expertise internally and empowering our colleagues to lead the way. 2021 highlights:


  • We achieved certification as a CarbonNeutral® company for all of our global operations.
  • We announced our goal of reducing emissions from Scopes 1, 2 and business travel 15% below 2019 levels by 2025.
  • We eliminated single-use plastics in 50% of office pantries.


  • At the invitation of His Royal Highness The Prince of Wales, Marsh McLennan joined the Insurance Task Force (ITF) as part of the Sustainable Markets Initiative. Marsh McLennan co-led the product and services development work stream of the ITF.
  • Oliver Wyman launched its Climate Action Navigator , an interactive tool designed to help senior leaders explore the actions they need to take to enable us to halve emissions by 2030, keeping a 1.5 degree temperature rise in reach.
  • Guy Carpenter developed the Severe Thunderstorm Risk Magnitude Index (SToRMi) , which provides a transparent approach to severe thunderstorm hazard assessment to afford clients an independent and current viewpoint of risk.


For 150 years, the people of Marsh McLennan have shaped our shared enterprise to address the challenges of their time and to make a difference in the moments that matter for clients, communities and each other.

Today, our priorities inside the organization are the same as our aspirations for business and society: to help people realize their individual and collective potential; to advance belonging, opportunity, health and well-being; and to change what’s possible through partnerships and shared solutions.

As we adapt to new ways of working, we are creating new possibilities for our colleagues to help enable them to do their best work and lead their best lives. 2021 highlights:


  • We grew to more than 80,000 colleagues.
  • 80% of our colleagues participated in the All-Colleague Survey.
  • On both pay and total compensation, we achieved less than 1% difference between women and men on a global basis and between non-White and White colleagues in the US as of April 1, 2021, after making certain adjustments.


  • Mercer launched the Inclusive Partner Network , a specialty practice group focused on collaborating with our clients and suppliers on innovative ways to promote supplier diversity.
  • The Oliver Wyman Health Innovation Center accelerated solutions to the crisis of high cost and poor quality healthcare that afflicts systems around the world.
  • Marsh collaborated with RIMS to publish thought leadership on how inclusion and diversity initiatives succeed and where they often fall short.


At Marsh McLennan, understanding governance risks and opportunities in decision-making is a fundamental part of what we do. Our governance practices underpin our corporate purpose, and allow us to better support our clients, colleagues and communities. Indeed, our commitment to strong governance has been the foundation of all of our ESG efforts. 2021 highlights:


  • We created a stand-alone Chief Compliance Officer position, separating it from the Deputy General Counsel & Corporate Secretary role.
  • 90% of colleagues who responded to our 2021 Engagement survey felt that ethical expectations had been clearly communicated.
  • We launched new required training on privacy and security best practices as part of our #BeCyberSmart initiative.


  • We launched the Marsh McLennan Cyber Risk Analytics Center , an enterprise-wide resource that brings together the cyber risk data and analytics expertise of Marsh, Guy Carpenter and Oliver Wyman to provide clients with a comprehensive view of their cyber threats, the maturity and availability of their existing and future controls, and the economic impact of their risk.
  • We partnered with the World Economic Forum to publish the Global Risks Report that highlights the disruptive implications of major risks, including the COVID-19 pandemic, that were predicted to reshape our world in 2021 and over the next decade.
  • Martin South, Vice Chair, Marsh McLennan and CEO of Marsh, testified at a Senate Banking hearing on the role of insurance in managing pandemic risk.


Accelerating Impact

2021 ESG Report

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