POWER OF ATTORNEY

      Know all by these presents, that the undersigned hereby
constitutes and appoints each of Kristy Berner, William J. Kelleher,
and Victoria Bova, or any of them signing singly, and with full
power of substitution, the undersigned's true and lawful attorney-
in-fact to:

	(1)	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 and
		passwords enabling the undersigned to make electronic
		filings with the SEC of reports required by Section 16(a)
		of the Securities Exchange Act of 1934 or any rule or
		regulation of the SEC;

	(2)	execute for and on behalf of the undersigned, in the
		undersigned's capacity as a director of
		People's United Financial, Inc. (the "Company"), Forms 3,
		4, and 5 in accordance with Section 16(a) of the
		Securities Exchange Act of 1934 and the rules thereunder;

	(3)	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 such
		Form 3, 4, or 5, complete and execute any amendment or
		amendments thereto, and timely file such form with the
		SEC and any stock exchange or similar authority; and

	(4)	take any other action of any type whatsoever in connection
		with the foregoing which, in the
		opinion of 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 if
personally present, 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 Securities Exchange Act of 1934.

      This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4, and
5 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 caused this Power of
Attorney to be executed as of this 18th day of October, 2018.

						Nancy McAllister
						________________
						Signature


						Nancy McAllister
						________________
						Print Name