Endurance Specialty Holdings Ltd. is a holding company. The Company, through its operating subsidiaries in Bermuda, the United States and the United Kingdom, focuses on underwriting specialty lines of personal and commercial property, and casualty insurance and reinsurance. It operates through two segments: Insurance and Reinsurance. In the Insurance segment, it writes agriculture, casualty and other specialty, professional lines, and property, marine/energy and aviation insurance. In the Reinsurance segment, it writes catastrophe, property, casualty, professional lines and specialty reinsurance. Its Insurance and Reinsurance segments both include property-related coverages, which provide insurance or reinsurance of an insurable interest in tangible property for property loss, damage or loss of use. In addition, its Insurance and Reinsurance segments include various casualty insurance and reinsurance coverages, which are concerned with the losses caused by injuries to third parties.