LIMITED POWER OF ATTORNEY
                                      FOR
      John Hancock GA Mortgage Trust and John Hancock GA Senior Loan Trust

                             SECTION 16(a) FILINGS

As an officer, trustee or shareholder of John Hancock GA Mortgage Trust and John
Hancock  GA  Senior  Loan  Trust  (the  "Trusts"),  the  undersigned  hereby
constitutes  and  appoints with full power of substitution each of Ariel Ayanna,
Daniel  Beauregard, Suzanne Cartledge, Anjali Chitre, Edward Macdonald and David
Pemstein,  acting  singly,  the undersigned's true and lawful attorney-in-fact
to:

      (1)  Prepare  and  execute  for  the  undersigned,  Forms  3, 4, and 5 and
amendments  thereto  regarding  shares  of the Trusts in accordance with Section
16(a) of the Securities Exchange Act of 1934 and the rules thereunder;

      (2)  File  any  such Form 3, 4, or 5 or amendments thereto with the United
States Securities and Exchange Commission (the "SEC") and any stock exchange
or similar authority; and

      (3)  Take any other action which, in the opinion of such attorney-in-fact,
may be necessary or desirable in connection with the foregoing.

The  undersigned  acknowledges  that neither the foregoing attorneys-in-fact nor
the  Trusts  are  assuming  the  undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934 and the rules thereunder.

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, unless earlier
revoked  by  the  undersigned  in  a  signed  writing delivered to the foregoing
attorneys-in-fact.  This  Power  of Attorney may be filed with the SEC as may be
necessary or appropriate.

IN  WITNESS  WHEREOF,  the  undersigned  has caused this Power of Attorney to be
executed as of this 19th day of November 2020.


                                                /s/ William T. Shields
                                                ------------------------
                                                William T. Shields

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