Exhibit 99.1

Name and Address of Reporting Person:        Thomas H. Lee Advisors, LLC
                                             c/o Thomas H. Lee Partners, L.P.
                                             100 Federal Street, 35th Floor
                                             Boston, MA  02110

Issuer Name and Ticker or Trading Symbol:    Ceridian HCM Holding Inc. [CDAY]

Date of Earliest Transaction Required to be
Reported (Month/Day/Year):                   April 3, 2019

Footnotes to Form 4

(1) This report is filed by the following Reporting Persons: THL Holdco, LLC
("THL Holdco"), Thomas H. Lee Partners, L.P. ("THL Partners"), Thomas H. Lee
Advisors, LLC ("THL Advisors"), Thomas H. Lee Equity Fund VI, L.P. ("THL Equity
VI"); Thomas H. Lee Parallel Fund VI, L.P. ("Parallel Fund VI"); Thomas H. Lee
Parallel (DT) Fund VI, L.P. ("DT Fund VI"); THL Equity Fund VI Investors
(Ceridian), L.P. ("Ceridian I"); THL Equity Fund VI Investors (Ceridian) II,
L.P. ("Ceridian II"); THL Equity Fund VI Investors (Ceridian) III, LLC
("Ceridian III"); THL Equity Fund VI Investors (Ceridian) IV, LLC ("Ceridian
IV"); THL Equity Fund VI Investors (Ceridian) V, LLC ("Ceridian V"),  THL Equity
Fund VI Investors (Ceridian) VI, LP, ("Ceridian VI" and together with Ceridian
I, Ceridian II, Ceridian III, Ceridian IV and Ceridian V, the "Ceridian Funds");
THL Coinvestment Partners, L.P. ("THL Coinvestment"); THL Operating Partners,
L.P. ("THL Operating"); Great-West Investors, L.P. ("Great-West"); and Putnam
Investments Employees' Securities Company III LLC ("Putnam III") (collectively
with their affiliates, the "THL Funds"); Thomas M. Hagerty; and Gnaneshwar B.
Rao. This Form 4 is in two parts and is jointly filed with the Reporting Persons
in both parts. See Remarks.

(2) THL Holdco is the managing member of THL Advisors, which in turn is the
general partner of THL Partners, which in turn is the general partner of THL
Coinvestment and THL Operating. THL Advisors is attorney in fact for Great-West
Investors LP and Putnam Investments LLC, which is the managing member of Putnam
III with respect to the shares of common stock they hold. THL Equity VI is the
general partner of the Ceridian Funds. Solely for purposes of Section 16 of the
Exchange Act, the THL Funds may be deemed directors by deputization.

(3) Each of the Reporting Persons disclaims beneficial ownership of the
securities listed in this report, and this report shall not be deemed an
admission that the Reporting Person is the beneficial owner of such securities
for the purpose of Section 16 or for any other purpose, except to the extent of
such Reporting Person's pecuniary interest therein.

(4) Represents shares of Common Stock held directly and sold by the following
entities: 351,376 shares sold by THL Equity VI; 237,934 shares sold by Parallel
Fund VI; 41,562 shares sold by DT Fund VI; 355,693 shares sold by Ceridian I;
159,102 shares sold by Ceridian II; 6,235 shares sold by Ceridian III; 8,906
shares sold by Ceridian IV; 1,899 shares sold by Ceridian V; 52,689 shares sold
by Ceridian VI; 2,386 shares sold by THL Coinvestment; 765 shares sold by THL
Operating; 1,798 shares sold by Great-West; and 1,797 shares sold by Putnam III.

(5) Represents shares of Common Stock of the Issuer directly held by the
following entities following the transaction: 13,580,373 shares held by THL
Equity VI; 9,195,905 shares held by Parallel Fund VI; 1,606,340 shares held by
DT Fund VI; 13,747,231 shares held by Ceridian I; 6,149,148 shares held by
Ceridian II; 240,972 shares held by Ceridian III; 344,216 shares held by
Ceridian IV; 73,394 shares held by Ceridian V; 2,036,388 shares held by Ceridian
VI; 92,206 shares held by THL Coinvestment; 29,574 shares held by THL Operating;
69,501 shares held by Great-West; and 69,443 shares held by Putnam III.

(6) Messrs. Hagerty and Rao are Managing Directors of THL Partners.