Exhibit 99.1

SAFETY ANNOUNCES FOURTH QUARTER AND YEAR END 2012 RESULTS

Boston, Massachusetts, March 11, 2013.  Safety Insurance Group, Inc. (NASDAQ:SAFT) today reported fourth quarter and year end 2012 results.  Net income for the quarter ended December 31, 2012 was $9.6 million, or $0.62 per diluted share, compared to $4.8 million, or $0.31 per diluted share, for the comparable 2011 period.  Net income for the year ended December 31, 2012 was $58.1 million, or $3.80 per diluted share, compared to $13.7 million, or $0.90 per diluted share, for the comparable 2011 period.  Safety’s book value per share increased to $45.31 at December 31, 2012 from $43.22 at December 31, 2011.  Safety paid $0.60 per share in dividends to investors during the quarter ended December 31, 2012, compared to $0.50 per share during the comparable 2011 period.  Safety paid $2.20 per share in dividends to investors during the year ended December 31, 2012 compared to $2.00 per share during the comparable 2011 period.

Direct written premiums for the quarter ended December 31, 2012 increased by $10.3 million, or 7.1%, to $155.1 million from $144.8 million for the comparable 2011 period.  Direct written premiums for the year ended December 31, 2012 increased by $47.0 million, or 7.2%, to $696.2 million from $649.2 million for the comparable 2011 period.  The 2012 increase occurred primarily in our personal automobile and homeowners business lines, which experienced increases of 4.9% and 4.1%, respectively, in average written premium per exposure.  Written exposures remained consistent in our personal automobile line and increased by 7.2% in our homeowners line.

Net written premiums for the quarter ended December 31, 2012 increased by $9.1 million, or 6.7%, to $145.9 million from $136.8 million for the comparable 2011 period.  Net written premiums for the year ended December 31, 2012 increased by $43.6 million, or 7.0%, to $663.9 million from $620.3 million for the comparable 2011 period.  Net earned premiums for the quarter ended December 31, 2012 increased by $11.6 million, or 7.6%, to $165.4 million from $153.8 million for the comparable 2011 period.  Net earned premiums for the year ended December 31, 2012 increased by $44.1 million, or 7.4%, to $642.5 million from $598.4 million for the comparable 2011 period.  Net written and net earned premiums increased primarily due to the factors that increased direct written premiums.

Net investment income for the quarter ended December 31, 2012 increased by $1.0 million, or 10.4%, to $10.3 million from $9.3 million for the comparable 2011 period.  Net investment income for the year ended December 31, 2012 increased by $1.8 million, or 4.6%, to $40.9 million from $39.1 million for the comparable 2011 period.  Net effective annualized yield on the investment portfolio increased to 3.6% for the quarter ended December 31, 2012 from 3.4% for the comparable 2011 period.  Net effective annual yield increased to 3.7% for the year ended December 31, 2012 from 3.6% for the comparable 2011 period.  Our duration was 3.6 years at December 31, 2012, down from 3.7 years at December 31, 2011.

For the quarter ended December 31, 2012, loss and loss adjustment expenses incurred decreased by $4.2 million, or 3.6%, to $115.0 million from $119.2 million for the comparable 2011 period.  For the year ended December 31, 2012, loss and loss adjustment expenses incurred decreased by $44.4 million, or 9.5%, to $422.2 million from $466.6 million for the comparable 2011 period. The decrease was primarily due to pre-tax catastrophic weather event losses incurred of $8.0 million and $10.3 million during the quarter and year ended December 31, 2012, respectively, compared to $8.4 million and $61.4 million, respectively, during the comparable 2011 periods. Loss, expense, and combined ratios calculated under U.S. generally accepted accounting principles for the quarter ended December 31, 2012 were 69.6%, 32.4%, and 102.0%, respectively, compared to 77.6%, 30.6%, and 108.2%, respectively, for the comparable 2011 period.  Loss, expense, and combined ratios calculated under U.S. generally accepted accounting principles for the year ended December 31, 2012 were 65.7%, 31.2%, and 96.9%, respectively, compared to 78.0%, 29.9%, and 107.9%, respectively, for the comparable 2011 period.  Total prior year favorable development included in the pre-tax results for the quarter and year ended December 31, 2012 was $5.4 million and $17.3 million, respectively, compared to $11.6 million and $36.7 million, respectively, for the comparable 2011 periods.

About Safety:  Safety Insurance Group, Inc. is the parent of Safety Insurance Company, Safety Indemnity Insurance Company, and Safety Property and Casualty Insurance Company which are Boston, MA, based writers of property and casualty insurance.  Safety is a leading writer of personal automobile insurance in Massachusetts.

Additional Information:  Press releases, announcements, U. S. Securities and Exchange Commission (“SEC”) Filings and investor information are available under “About Safety,” “Investor Information” on our Company website located at www.SafetyInsurance.com.  Safety filed its December 31, 2011 Form 10-K with the SEC on March 13, 2012 and urges shareholders to refer to this document for more complete information concerning Safety’s financial results.

Contacts:

Safety Insurance Group, Inc.

Office of Investor Relations

877-951-2522

InvestorRelations@SafetyInsurance.com

Cautionary Statement under “Safe Harbor” Provision of the Private Securities Litigation Reform Act of 1995:

This press release contains, and Safety may from time to time make, written or oral “forward-looking statements” within the meaning of the U.S. federal securities laws.  Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts.  They often include words such as “believe,” “expect,” “anticipate,” “intend,” “plan,” “estimate,” “aim,” “projects,” or words of similar meaning and expressions that indicate future events and trends, or future or conditional verbs such as “will,” “would,” “should,” “could,” or “may”. All statements that address expectations or projections about the future, including statements about the Company’s strategy for growth, product development, market position, expenditures and financial results, are forward looking statements.

Forward-looking statements are not guarantees of future performance.  By their nature, forward-looking statements are subject to risks and uncertainties.  There are a number of factors, many of which are beyond our control, that could cause actual future conditions, events, results or trends to differ significantly and/or materially from historical results or those projected in the forward-looking statements.  These factors include but are not limited to the competitive nature of our industry and the possible adverse effects of such competition.  Although a number of national insurers that are much larger than we are do not currently compete in a material way in the Massachusetts private passenger automobile market, if one or more of these companies decided to aggressively enter the market it could have a material adverse effect on us.  Other significant factors include conditions for business operations and restrictive regulations in Massachusetts, the possibility of losses due to claims resulting from severe weather, the possibility that the Commissioner of Insurance may approve future Rule changes that change the operation of the residual market, our possible need for and availability of additional financing, and our dependence on strategic relationships, among others, and other risks and factors identified from time to time in our reports filed with the SEC, such as those set forth under the caption “Risk Factors” in our Form 10-K for the year ended December 31, 2011 filed with the SEC on March 13, 2012.

We are not under any obligation (and expressly disclaim any such obligation) to update or alter our forward-looking statements, whether as a result of new information, future events, or otherwise.  You should carefully consider the possibility that actual results may differ materially from our forward-looking statements.

Safety Insurance Group, Inc. and Subsidiaries

Consolidated Balance Sheets

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Safety Insurance Group, Inc. and Subsidiaries

Consolidated Statements of Operations

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Safety Insurance Group, Inc. and Subsidiaries

Additional Premium Information

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