EX-5.1

Exhibit 5.1

LOGO

May 24, 2019

CBIZ, Inc.

6050 Oak Tree Boulevard, South,

Suite 500

Cleveland, Ohio 44131

Re:	CBIZ, Inc. Post-Effective Amendment No. 1 to Registration Statement on Form S-8 (Commission No. 333-197284)

Ladies and Gentlemen:

We have acted as counsel to CBIZ, Inc., a Delaware corporation (the “Company”), in connection with a Post-Effective Amendment No. 1 to the Form S-8 (Commission No. 333-197284) of the Company (the “Registration Statement Amendment”), being filed on the date hereof with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Act”), relating to the proposed issuance of up to 3,062,788 shares (the “Shares”) of the Company’s common stock, par value $0.01 per share (“Common Stock”), which previously were available for issuance under the CBIZ, Inc. 2014 Stock Incentive Plan and which going forward may be issued under the CBIZ, Inc. 2019 Omnibus Incentive Plan (the “2019 Plan”). This opinion is being furnished in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Act.

We have examined originals or certified copies of such corporate records of the Company and other certificates and documents of officials of the Company, public officials and others as we have deemed appropriate for purposes of this letter. We have assumed the genuineness of all signatures, the legal capacity of all natural persons, the authenticity of all documents submitted to us as originals, and the conformity to authentic original documents of all copies submitted to us as conformed, certified or reproduced copies. We have also assumed that (i) the certificates for the Shares will conform to the specimen thereof filed as an exhibit to the Registration Statement Amendment and upon issuance will have been duly countersigned by the transfer agent and duly registered by the registrar for the Common Stock or, if uncertificated, valid book-entry notations for the issuance of the Shares in uncertificated form will have been duly made in the share register of the Company, (ii) each award agreement setting forth the terms of each award granted pursuant to the 2019 Plan will be consistent with the 2019 Plan and will have been duly authorized and validly executed and delivered by the parties thereto, (iii) at the time of each issuance of Shares, there will be sufficient shares of Common Stock authorized for issuance under the Company’s Amended and Restated Certificate of Incorporation, as amended, that have not otherwise been issued or reserved or committed for issuance, and (iv) the price per share paid for Shares issued pursuant to the 2019 Plan will not be less than the par value of the Shares. As to various questions of fact relevant to this letter, we have relied, without independent investigation, upon certificates of public officials and certificates of officers of the Company, all of which we assume to be true, correct and complete.