MARSH & McLENNAN COMPANIES

Our Culture







We are 75,000 colleagues from a world of cultures, committed to each other, to our clients and to the greater good.

All identities. All experiences. All are welcome here.
PRESIDENT & CEO, DAN GLASER
"We promise everyone who comes to work at Marsh & McLennan three things: extraordinary colleagues, work that matters and the opportunity to make a difference."
Who are we?
We are a “brains” business. Clients hire us for what we know and what we can accomplish together.
Teamwork
We thrive on working side-by-side and harnessing our collective intelligence across businesses and borders.
Leadership
We empower our leaders to do their best work while leading their best lives. We invest in their growth and encourage them to be present when and where they are needed.
Commitment
We are committed to making a difference for each other, our clients and our world.
Trust
We build trust by doing the right thing and keeping the greater good top-of-mind in all we do.
Enabling Client Success
We combine a unique range of capabilities to help our clients solve problems, seize opportunities and build lasting success in an increasingly dynamic world.
Enabling Client Success
We combine a unique range of capabilities to help our clients solve problems, seize opportunities and build lasting success in an increasingly dynamic world.
Supply Chain
Supply chain experts at Marsh are helping multinational clients navigate trade policies and design resilient solutions to supply chain risks – now at their highest level since 1995.
Insurance Trends
Guy Carpenter has the most comprehensive statistical picture of the U.S. insurance industry – 30 years of data from 1,000 companies – and helps insurers better understand how their businesses are evolving.
Talent
As cybersecurity becomes a strategic discipline, Mercer is helping CEOs win the race for top talent and organize the right mix of staff to meet tomorrow’s challenges.
Tech for Clients
Digital trading tools designed by Oliver Wyman Labs help online marketers automate transaction decisions by analyzing a confluence of digital signals in the time it takes a customer to click.
Finding The Smarter Way
Innovation is everybody’s business. We celebrate colleagues who show us new ways to do things, whether it’s a better office process or a breakthrough for a client.
Finding The Smarter Way
Innovation is everybody’s business. We celebrate colleagues who show us new ways to do things, whether it’s a better office process or a breakthrough for a client.
Cyber Security
Marsh Global Analytics is improving clients’ ability to foresee the likelihood of cyber-attacks as well as their potential severity, enabling companies to tighten their defenses and make informed insurance-purchasing decisions.
Technology
Guy Carpenter advisors are helping insurers adopt online platforms that reduce cost and analytics to step up the underwriting of complex risks they may have shunned in the past.
Women at Work
Mercer researchers are documenting the untapped power of women in the workplace – a potential GDP increase of $12 trillion. With data from more than 3 million employers in 42 countries, Mercer has conducted the most in-depth research on the topic.
Energy
Oliver Wyman advises energy producers on how to incorporate renewable sources into their business strategies, helping bring new technologies to scale and accelerate a low-carbon future.
Working Side by Side
Collaboration is the soul of our enterprise and diversity is a fundamental strategy. We succeed when we bring the widest range of people and views to the table.
Working Side by Side
Collaboration is the soul of our enterprise and diversity is a fundamental strategy. We succeed when we bring the widest range of people and views to the table.
Capital Modeling
Guy Carpenter and Oliver Wyman enable insurers to cover more risks by giving them more certainty about the reserves they will need for claims.
Gender Equality
Mercer and Oliver Wyman lead the discussion on the factors that keep women out of leadership roles in the corporate sphere, and in limited workplace roles in much of the world – a $3 trillion talent waste worldwide.
Building Resilience
Marsh’s and Guy Carpenter’s catastrophe analysts are making sure that industry, governments, and insurers absorb the lessons of natural and man-made disasters to improve prevention, preparation and response.
Governance
Across our businesses, we help CEOs balance shareholder obligations with increasing demands for transparency and accountability.
Living The Greater Good
Clients trust us with their most pressing challenges and important goals. We are committed to serving their interests and those of our colleagues, shareholders, and communities with ethics and integrity.
Living The Greater Good
Clients trust us with their most pressing challenges and important goals. We are committed to serving their interests and those of our colleagues, shareholders, and communities with ethics and integrity.
Campus Safety
Marsh helps educational institutions manage a new set of risks from cybersecurity to violence on campus – so that students, educators, and administrators can learn and work with confidence.
National Resilience
Guy Carpenter is helping the government responds more effectively to increasing disaster risk by spreading some of the risks to private investors, helping to unburden taxpayers.
Enabling Inclusion
Mercer networks enable senior executives around the world to share information and best practices in creating more diverse and inclusive corporate environments and addressing regional challenges.
Social Investment
Oliver Wyman is helping the United Kingdom establish a transformative social investment organization by codifying social investment practices at 100 of the world’s largest corporations.
Fostering Diversity and Inclusion
Our resource groups are communities of colleagues with shared interests or backgrounds who come together to connect with peers and serve as powerful business networks.

Learn more about our newest diversity commitments.
Fostering Diversity and Inclusion
Our resource groups are communities of colleagues with shared interests or backgrounds who come together to connect with peers and serve as powerful business networks.

Learn more about our newest diversity commitments.
Volunteering on a Global Scale
In 2018, our colleagues spent more than 200,000 hours volunteering around the world. During Global Volunteer Month, our colleagues volunteered in 45 countries.

Learn how our colleague volunteer participation rates have grown.
Volunteering on a Global Scale
In 2018, our colleagues spent more than 200,000 hours volunteering around the world. During Global Volunteer Month, our colleagues volunteered in 45 countries.

Learn how our colleague volunteer participation rates have grown.
Reducing our Waste
All of our technology equipment globally is reused, harvested for useful materials and recycled: 200 tons in 2018 alone.

View our most recent carbon emissions data.
Reducing our Waste
All of our technology equipment globally is reused, harvested for useful materials and recycled: 200 tons in 2018 alone.

View our most recent carbon emissions data.