The insurer Willis Group Holdings will merge with Towers Watson in an all-stock deal valued at about $18 billion. The combined company will be called Willis Towers Watson and will have about $8.2 billion in revenue and approximately 39,000 employees. Willis shareholders will own about 50.1 percent, and Towers Watson shareholders will own about 49.9 percent of the business.
The company will be based in Ireland, where Willis has its headquarters. Towers Watson is based in Arlington, Virginia.
The transaction has been unanimously approved by the Board of Directors of each company.
