W. R. Berkley Corporation is an insurance holding company that is among the largest commercial lines writers in the United States and operates worldwide in two segments of the property casualty insurance business: Insurance and Reinsurance. Each of the operating units within Berkley participates in a niche market requiring specialized knowledge about a territory or product. W. R. Berkley competitive advantage lies in long-term strategy of decentralized operations, allowing each of units to identify and respond quickly and effectively to changing market conditions and local customer needs. This decentralized structure provides financial accountability and incentives to local management and enables to attract and retain the highest caliber professionals. W. R. Berkley have the expertise and resources to utilize strengths in the present environment, and the flexibility to anticipate, innovate and respond to whatever opportunities and challenges the future may hold.