A World of Opportunity Awaits

Imagine the Possibilities 

One Organization. Thousands of Success Stories.

At Marsh & McLennan Companies, our 76,000-plus colleagues share a sense of purpose that goes beyond commercial success. Whether you work for Marsh, Mercer, Guy Carpenter, Oliver Wyman or for our Corporate Center, you’ll have countless opportunities to make a difference for our clients, our communities and the larger society that surrounds us.

​​​​​​​By striving to be better every day, we’ve created a world-class organization where colleagues don’t simply work together; they challenge each other to push further, think smarter and love what they’re doing together.
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Make a Difference Every Day 

Marsh & McLennan is a trusted advisor to clients around the world. A professional services firm like no other, we are the leading global experts in risk, strategy and people. We help clients prosper amid changing times and technologies, from the Industrial Revolution to the digital age. Now, we’re addressing the critical challenges and major opportunities of our time: realizing the potential of transformative technologies, reimagining the workforce for the future and more. 

​​​​Strength, Stability & Opportunity

Clients in more than 130 Countries
76,000 Global Colleagues
Average Revenue of $17 Billion
Global Team Fortune 250
Fortune 250 Company ​​​​​​​​​​​​​​
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149-Year History of Leadership and Innovation

Our Career Promise

"We promise everyone who comes to work at Marsh & McLennan three things: extraordinary colleagues, work that matters and the opportunity to make a difference."

President & CEO, Dan Glaser
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​​​​​Our Businesses

Explore Marsh, Guy Carpenter, Mercer and Oliver Wyman by clicking below:
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Our Culture

Our culture defines our company – who we are, what we do and how we do it. We are 76,000 colleagues from all over the world, committed to each other, our clients and to the greater good.

Students / Graduates

Many of our fastest-growing specialties didn’t exist ten years ago, and colleagues just beginning their careers played key roles in developing them. Join us and experience and help create exciting opportunities for the future – all while we provide the global platform you need to realize them, along with the training and support you need to lead the way.

What Our People are Saying

Rory Johnson
"My team is very small with only three members in the London office, so there is a personal dynamic which creates a great atmosphere to work in. I have constant communication with my manager and team leader, so I can deal with any issues quickly and efficiently. My team, along with all the Marsh colleagues I have dealt with, are very approachable and always keen to hear good ideas, contributing to an innovative and enjoyable working environment."
Rory Johnson
Vice President, Marsh — London
"To me, diversity and inclusion unlock potential and create a space where talent can thrive — which is exactly what I’ve found while working at Marsh & McLennan Companies. As an Asian-American female member of the LGBT community, I want to share my experiences and learn from and work with others to increase awareness, value and celebrate each other. I have had the honor and opportunity to be part of many diversity and inclusion initiatives at MMC and I truly feel that I am making a difference."
Amy D. Huang
Senior Manager – Onsite Technical Support, Marsh & McLennan Companies — Washington, D.C
"One of the best things about my job is the chance to be creative and to find innovative firms and strategic partners who can help our clients grow and also enhance GC's service offerings."
George Woods
Senior Vice President, Global Strategic Advisory, Guy Carpenter — New York
"I have always believed in equality in every aspect of life. We're different, but equal; equal, but different. Diversity is a great asset — a melting pot of creativity. Inclusion is a sense of belonging, a friendship."
Olga Drawska
Business Analyst, Oliver Wyman — Warsaw
"I love working with Mercer’s clients, assisting them to implement our suite of solutions and helping them to achieve better outcomes for their employees and customers. Working at a firm with the size and reach of Mercer, and within the Marsh & McLennan group of companies, has taught me the importance of tapping into our large network of remarkable colleagues. We have the luxury of asking questions, seeking advice and collaborating with people from diverse backgrounds around the world."
Rhys McKinnon
Principal, Mercer — Melbourne

Our Rewards

Our rewards are designed to help our colleagues and their families live better - physically, financially and mentally. From benefits that are intended to help our colleagues enjoy happy, healthy and secure lives, to compensation that encourages excellence, we're committed to helping our people thrive. 
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