Marsh & McLennan

At Marsh & McLennan, we believe that when women thrive, businesses thrive; diverse perspectives mean better solutions and better outcomes. In January 2019, our President and CEO, Dan Glaser, signed on to the U.S. chapter of the 30% Club — a campaign for greater representation of women on corporate boards and in other leadership roles. Our inclusion in the 2020 Bloomberg Gender-Equality Index reflects our commitment to transparency in gender reporting and advancing women in the workplace. Having also achieved a perfect score on the Human Rights Campaign Foundation’s 2020 Corporate Equality Index (CEI) and been recognized as a Best Place to Work for LGBTQ+ Equality in the US, we champion an inclusive environment where you can bring your whole self to work and it’s safe to speak up. That’s how innovation happens in a big organization, when people are willing to tell their boss, "Here’s a smarter way."
New York, NY
10,000+ employees
Founded 1905

There’s never been a better time to lead.

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We are four businesses with one purpose: helping companies meet the challenges of our time.

Marsh enables enterprise worldwide by helping clients manage risks, transforming uncertainty into opportunity. 

Mercer helps organizations advance the health, wealth, and careers of their most vital asset — their people. 

Guy Carpenter helps clients grow profitably with reinsurance broking expertise, advisory services, and advanced analytics. 

Oliver Wyman’s expertise in strategy, operations, risk, and organization transformation changes what is possible for our clients, their industries, and society.   

We are here to make a difference for our clients, our communities, and the larger society that surrounds us. We act as trusted advisors in 


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.

We  follow  one  code  of  conduct  everywhere  that  we  do  business.  Its  title,  The Greater  Good,  sums  up  what  we  are  aiming  for  in  both  our  business  ethics  and personal behavior. It applies equally in areas where regulations are stringent and in areas where corruption is common. We don't make exceptions for “how business  is done.”  When  we  fall  short,  we  address  our  failure  squarely,  punish  those responsible and tighten our policies to keep it from happening again.

Diversity & Inclusion

Marsh & McLennan welcomes people from all walks of life. The more diverse the backgrounds and experiences of our colleagues, the more opportunity we have as a company.

We want you to be you, and share your story. Inclusion is the promise we make to each other as colleagues. We respect all that makes you who you are, and we honor the experiences and the heritage that shaped you. We support each other as colleagues, in the work we do every day, and we support each others’ commitments to community and family. 

Our resource groups unite the communities within our company and can expand your possibilities at Marsh & McLennan and beyond.


As a “brains” business, our 75,000 global colleagues are our most important asset. We offer them:

  • A culture of internal mobility, collaboration and extraordinary career opportunities through our four businesses: Marsh, Mercer, Guy Carpenter, and Oliver Wyman.

  • Employee Resource Groups which provide access to leaders, relevant volunteer and mentoring opportunities, and interactions with counterparts in industry groups and client organizations.

  • Competitive pay and outstanding benefits to help colleagues and their families live better – physically, mentally, and financially.

  • Employee stock purchase plans in many countries that allow colleagues to purchase our shares at a discount and participate in Marsh & McLennan’s success.

  • Ample time away from the office and paid time off to give back through non-profit community service. 


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. 

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"The culture at Marsh & McLennan is immediately warm, collaborative and respectful. We strive to balance an unwavering commitment to our clients with the needs of our colleagues and the communities that we work in. Rigor and passion coupled with a strong sense of community and support makes this a wonderful place to work. Being on the Board of our Women in Technology organization gives me the opportunity to work with our CIO and other female and male technology leaders to co-create an inclusive, open environment, free of unconscious bias, where all Colleagues feel a sense of belonging and have the opportunity to fully participate. The more diverse our backgrounds and experiences, the more we can achieve together." "
Susan Meyer
Head of Corporate Talent Strategy

Social impact

What we stand for

Companies like ours have enormous power to shape the future through investment, expertise and the advice that we provide to a world of clients. Here are some of the principles that we try to live by as a public entity.

WE RESPECT the dignity and worth of every person. We work to advance human rights and social and workplace equality everywhere we do business.

WE REJECT racism, bigotry, homophobia and xenophobia and condemn any stance that limits people’s possibilities because of who they are or the circumstances that surround them.

WE  CHAMPION liberal  democracy  and  the  power  of  free  enterprise  to  change  what is possible. We embrace globalization and cooperative action to address the world’s great challenges and create new opportunities for its citizens. 

WE  SUPPORT the  rule  of  law,  sustained  alliances  based  on  shared  values,  and  keeping commitments.

Opportunities at Marsh & McLennan