POWER OF ATTORNEY

	KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes
and appoints each of Lisa G. Iglesias, J. Paul Jullienne, Matthew E. Bell, and
Leanne N. McWilliams and each of their successors in the offices of General
Counsel, Corporate Secretary or Assistant Secretary of Unum Group (the
"Company"), or any one of them acting singly, and with full power of
substitution, as the undersigned's true and lawful attorneys-in-fact to:

	(a)	prepare, execute in the undersigned's name and on the
		undersigned's behalf, and submit to the U.S. Securities and
		Exchange Commission (the "SEC") a Form ID, including
		amendments thereto, and any other documents necessary
		or appropriate to obtain codes, passwords, and passphrases
		enabling the undersigned to make electronic filings with the
		SEC of reports required by Section 16(a) of the Securities
		Exchange Act of 1934, as amended (the "Act"), or any rule
		or regulation of the SEC;

	(b)	execute for and on behalf of the undersigned, in the
		undersigned's capacity as a director of the Company, Forms 3,
		4 and 5 (including any amendments thereto, "Forms") in
		accordance with Section 16(a) of the Act and the rules
		thereunder;

	(c)	do and perform any and all acts for and on behalf of the
		undersigned which may be necessary or desirable to complete
		and execute any Forms and to timely file such Forms with the
		SEC and any securities 	exchange or similar authority; and

	(d)	take any other action of any type whatsoever in connection
		with the foregoing which, in the opinion of any such
		attorney-in-fact, may be of benefit to, in the best interest of, or
		legally required by, the undersigned, it being understood that
		the documents executed by such attorney-in-fact on behalf of
		the undersigned pursuant to this Power of Attorney shall be in
		such form and shall contain such terms and conditions as such
		attorney-in-fact may approve in such attorney-in-fact's
		discretion.

	The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do in person, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact, or
such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to
be done by virtue of this Power of Attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact,
in serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to
comply with Section 16 of the Act.  This Power of Attorney shall remain in full
force and effect until the undersigned is no longer required to file Forms with
respect to the undersigned's holdings of and transactions in securities issued
by the Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

	IN WITNESS WHEREOF, the undersigned has executed this Power of
Attorney effective as of the 22nd day of February, 2018.

					/s/  Susan D. DeVore
					---------------------------
					Susan D. Devore