<SEC-DOCUMENT>0001564590-18-001149-index.html : 20180131
<SEC-HEADER>0001564590-18-001149.hdr.sgml : 20180131
<ACCEPTANCE-DATETIME>20180131171327
ACCESSION NUMBER:		0001564590-18-001149
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20180131
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180131
DATE AS OF CHANGE:		20180131

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HANOVER INSURANCE GROUP, INC.
		CENTRAL INDEX KEY:			0000944695
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				043263626
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13754
		FILM NUMBER:		18563629

	BUSINESS ADDRESS:	
		STREET 1:		440 LINCOLN ST
		CITY:			WORCESTER
		STATE:			MA
		ZIP:			01653
		BUSINESS PHONE:		5088551000

	MAIL ADDRESS:	
		STREET 1:		440 LINCOLN ST
		CITY:			WORCESTER
		STATE:			MA
		ZIP:			01653

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLMERICA FINANCIAL CORP
		DATE OF NAME CHANGE:	19950501
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>thg-8k_20180131.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: thg-8k_20180131.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>thg-ex991_13.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: thg-ex991_13.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>thg-ex992_6.htm
<DESCRIPTION>EX-99.2
<TEXT>
Document 3 - file: thg-ex992_6.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g201801312158153911385.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g201801312158153911385.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g2018013121585817456324.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g2018013121585817456324.jpg

</DOCUMENT>
</SEC-DOCUMENT>