Welcome Get to know OneBeacon where specialized expertise matters.

International Marine Underwriters (IMU)

International Marine Underwriters offers a full range of ocean and inland marine insurance products.

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OneBeacon Surety Group

OneBeacon Surety Group offers a broad range of commercial, custom and miscellaneous bonds targeting middle-market, Fortune 2500 companies written through a network of independent agencies, brokers and wholesalers. Business is serviced through eight regions throughout the United States.

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OneBeacon Technology Insurance

OneBeacon Technology Insurance solely focuses on the technology industry, making it a source for technology insurance and risk management needs.

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OneBeacon Program Group

OneBeacon Program Group provides a full range of multi-line package insurance solutions for select specialty programs overseen by dedicated MGAs, MGUs and Program Administrators.

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A.W.G. Dewar

A.W.G. Dewar’s tuition refund plan protects schools and parents from the financial consequences of a student’s withdrawal or dismissal from school.

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OneBeacon Entertainment

OneBeacon Entertainment provides specialized commercial insurance products, including professional liability coverages, for the entertainment, sports and leisure industries.

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OneBeacon Healthcare Group

OneBeacon Healthcare Group provides professional liability coverages and other specialized coverages for hospitals, physicians and complex risks; free-standing medical facilities; senior living organizations; and managed care organizations.

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OneBeacon Architects & Engineers

OneBeacon Architects & Engineers offers professional and management liability coverages targeted for this customer segment.

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OneBeacon Management Liability

OneBeacon Management Liability offers D&O, EPL, fiduciary liability and crime insurance for nonprofits and private for-profit companies.

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OneBeacon Environmental

OneBeacon Environmental specializes in environmental risk solutions designed to address a variety of exposures for a broad range of businesses, including multiline casualty placements for the environmental industry.

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OneBeacon Accident and Health

OneBeacon Accident and Health focuses on analyzing and developing unique accident solutions and programs for the transportation, youth sports and corporate accident marketplace. We also provide medical excess coverages including medical stop loss for self-funded employers, as well as provider excess of loss insurance and HMO reinsurance for managed care organizations.

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OneBeacon Government Risks

OneBeacon Government Risks provides solutions for midsized municipalities and counties, special districts and other publicly funded agencies.

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OneBeacon Financial Services

OneBeacon Financial Services offers property and casualty coverages for commercial banks, savings banks and savings and loan institutions, security broker-dealers, investment advisors, insurance companies and credit unions.

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OneBeacon Specialty Property

OneBeacon Specialty Property provides excess property and inland marine solutions that augment primary policies or self-insured retentions.

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OneBeacon Financial Institutions

OneBeacon Financial Institutions specializes in professional liability, management liability and fidelity coverages for all classes of financial institutions including, but not limited to, money center banks, insurance companies, asset management, security broker dealers/captive agents, real estate investment trusts, venture capital/private equity and insurance agents and brokers. Products include directors & officers liability, errors or omissions, professional liability, employment practices liability and fiduciary liability.

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