Business description of HANOVER-INSURANCE-GROUP-INC from last 10-k form

ORGANIZATION

The Hanover Insurance Group, Inc. (“THG”) is a holding company organized as a Delaware corporation in 1995. Our consolidated financial statements include the accounts of THG; The Hanover Insurance Company (“Hanover Insurance”) and Citizens Insurance Company of America (“Citizens”), which are our principal property and casualty subsidiaries; and certain other insurance and non-insurance subsidiaries. Our results of operations also included the results of our former life insurance company, First Allmerica Financial Life Insurance Company (“FAFLIC”), through December 31, 2008. On January 2, 2009, we sold FAFLIC to Commonwealth Annuity and Life Insurance Company (“Commonwealth Annuity”), a subsidiary of The Goldman Sachs Group, Inc. (“Goldman Sachs”). The results of operations for FAFLIC are reported as discontinued operations.

FINANCIAL INFORMATION ABOUT OPERATING SEGMENTS

Our primary business operations include insurance products and services in three property and casualty operating segments. These segments are Commercial Lines, Personal Lines, and Other Property and Casualty. We report interest expense related to our corporate debt separately from the earnings of our operating segments. Corporate debt consists of our senior debentures, our junior subordinated debentures, advances under our collateralized borrowing program with the Federal Home Loan Bank of Boston (“FHLBB”), and surplus notes.

Information with respect to each of our segments is included in “Segment Results” on pages 37 to 54 in Management’s Discussion and Analysis of Financial Condition and Results of Operations and in Note 14 on pages 119 and 120 of the Notes to the Consolidated Financial Statements included in Financial Statements and Supplementary Data of this Form 10-K.

DESCRIPTION OF BUSINESS BY SEGMENT

Following is a discussion of each of our operating segments.

PROPERTY AND CASUALTY

GENERAL

Our Property and Casualty group manages its operations principally through three segments: Commercial Lines, Personal Lines and Other Property and Casualty. We underwrite commercial and personal property and casualty insurance through Hanover Insurance, Citizens and other THG subsidiaries, primarily through an independent agent network concentrated in the Northeast, Midwest and Southeast United States. In 2010, we expanded our geographic network of independent agents into the western part of the United States primarily through the renewal rights transaction with OneBeacon Insurance Group (“OneBeacon”). Our Other Property and Casualty segment consists of: Opus Investment Management, Inc. (“Opus”), which markets investment management services to institutions, pension funds and other organizations; earnings on holding company assets; and a run-off voluntary pools business.

Our strategy focuses on strong agency relationships and active agency management, disciplined underwriting, pricing, quality claim handling, and customer service. In Commercial Lines, we are increasingly segmenting our business into industry groups and coverages, which require higher levels of industry underwriting and claims expertise and specialized coverage forms. In Personal Lines, we are focusing on account business. Overall, we seek to diversify our underwriting risks on a geographic and line of business basis. Taken as a group, THG ranks among the top 25 property and casualty insurers in the United States based on direct premiums written for the first nine months of 2010.

RISKS

The industry’s profitability and cash flow can be significantly affected by: price; competition; volatile and unpredictable developments such as extreme weather conditions and natural disasters, including catastrophes; legal and regulatory developments affecting insurer and insureds’ liability; extra-contractual liability; size of jury awards; acts of terrorism; fluctuations in interest rates or the value of investments; and other general economic conditions and trends, such as inflationary pressure or unemployment, that may affect the adequacy of reserves or the demand for insurance products. Our investment portfolio and its future returns may be further impacted by the capital markets and current economic conditions, which could affect our liquidity, the amount of realized losses and impairments that will be recognized, credit default levels, our ability to hold such investments until recovery and other factors. Additionally, the economic conditions in geographic locations where we conduct business, especially those locations where our business is concentrated, may affect

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