The Marsh McLennan Flood Risk Index


Use our updated webtool
Marsh McLennan is the world’s leading professional services firm in risk, strategy and people.
We bring together experts from across our four global businesses — Marsh, Guy Carpenter, Mercer and Oliver Wyman — to help make organizations more successful and societies more resilient.
This Moment
Resources for right now:
Supply chain, ESG, inflation & more
Get insights
We are a company of ideas and ideals.
With more than 80,000 colleagues based all over the world, our shared purpose — to make a difference in the moments that matter — has never been more important or more relevant. Change is our work, and it begins with us.