Willis Towers Watson

On June 12, 2020, Willis Towers Watson Public Limited Company (the “Company”) entered into an amendment with John Haley (the “Amendment”) to amend his employment agreement with the Company, dated as of March 1, 2016, as amended on July 18, 2018 and May 20, 2019 (the “Employment Agreement”). Pursuant to the Amendment, the Employment Agreement will remain in full force and effect, and is modified as described below. The term of the Employment Agreement is extended until the later of (i) December 31, 2020 and (ii) the “effective date” as defined under the Business Combination Agreement with Aon plc (the “BCA Effective Date”). However, if the BCA Effective Date does not occur prior to December 31, 2021, the term will expire on such date. As a result of the Amendment, the non-competition, non-solicitation, and other restrictive covenants to which Mr.

(e) On June 5, 2020, Willis Towers Watson Public Limited Company, a corporation organized under the laws of Ireland (the “ Company ”), adopted changes to the short-term incentive compensation program (the “ STI Program ”) for the Company’s executive officers for 2020. The general principles applicable to the STI Program for the Company’s broader base of employees have not been changed.

On March 8, 2020, our board of directors approved the Willis Towers Watson Public Limited Company Severance and Change in Control Pay Plan for U.S. Executives (the “ U.S. Severance Plan ”) and the Willis Towers Watson Severance and Change in Control Pay Plan for Non-U.S. Executives (the “ Non-U.S. Severance Plan ,” and together, the “ Severance Plans ”). The U.S. Severance Plan is intended to be a severance pay plan governed by Title I of ERISA primarily for the purpose of providing benefits for a select group of management or highly compensated employees based in the U.S. and the Non-U.S. Severance Plan is intended to accommodate the requirements of local non-U.S. laws. Of our named executive officers, Michael Burwell and Gene Wickes have been selected to participate in the Severance Plans. John Haley will not be participating in the U.S.

On August 14, 2019, Willis Towers Watson Public Limited Company (the “Company”) announced that Adam Garrard, the current head of International, will become the head of the Corporate Risk and Broking segment, effective immediately. Todd Jones, the current head of the Corporate Risk and Broking segment and a “named executive officer” in the latest proxy statement, will be leaving the Company for a role at another company.

On May 8, 2019, Willis Towers Watson Public Limited Company (the “Company”) announced several changes, effective immediately, to the structure of the Operations and Technology functions that report to Michael Burwell, the Chief Financial Officer. As part of these changes, the position of Head of Operations and Technology will be eliminated; the functions currently associated with that position will either report directly to Mr. Burwell or to his direct reports; and David Shalders, the current Head of Operations and Technology and a “named executive officer” in the latest proxy statement, will cease to have that title and will be leaving the Company.

(b) Retirement of Directors On February 26, 2019, James McCann announced his intention to retire from the Board of Directors of Willis Towers Watson Public Limited Company (the “Company”). He will serve the remainder of his term and will not seek re-election at the 2019 Annual General Meeting of Shareholders (the “2019 AGM”). Accordingly, at the 2019 AGM (currently anticipated to be on May 20, 2019), he will retire from the Board and all Board Committees. Mr. McCann’s retirement follows almost 15 years of service on the Board and various Board Committees, with almost seven years of service as Non-Executive Chairman or Lead Independent Director of the Company and its Willis predecessor. This includes serving as Non-Executive Chairman during the three-year period following the merger of Willis and Towers Watson.

On July 18, 2018, Willis Towers Watson Public Limited Company (the “ Company ”) announced that it has extended its contract with John J. Haley, Chief Executive Officer, through January 1, 2021, on which date Mr. Haley plans to retire. In light of Mr. Haley’s continued leadership of the Company, and in order to facilitate an orderly succession of the Chief Executive Officer position, the Company and Mr. Haley entered into an amendment (the “ Amendment Agreement ”) to that certain employment agreement, dated as of March 1, 2016, by and between the Company and Mr. Haley (the “ Employment Agreement ”). The Amendment Agreement is attached as Exhibit 99.2 and incorporated herein by reference.

On November 14, 2017, Jeffrey W. Ubben, a director of Willis Towers Watson Public Limited Company (the “Company”), notified the Company’s Board of Directors of his resignation as a director. His resignation was effective as of November 15, 2017. Mr. Ubben is not resigning due to any disagreement with the Company on any matter relating to its operations, policies or practices.

On August 21, 2017, Willis Towers Watson Public Limited Company (the “ Company ”) announced that Mr. Michael J. Burwell will become the Company’s new Chief Financial Officer, effective October 2, 2017. Mr. Burwell, 53, will join the Company with over 30 years of finance experience from his tenure at PricewaterhouseCoopers LLP, where he has served as a Senior Partner driving Transformation activities with various clients across industries since 2016. Mr. Burwell has served in various senior leadership roles at PricewaterhouseCoopers, including, most recently, Vice Chairman, Global and US Transformation Leader from 2012 to 2016, Vice Chairman, US Operations Leader (COO) and Chief Financial Officer from 2007 to 2012, and Leader of the Transaction Services practice from 2005 to 2007. An offer letter, dated August 17, 2017, (the “Agreement”), sets forth the terms of Mr.

(b) On April 6, 2017, Roger Millay, the Chief Financial Officer of Willis Towers Watson Public Limited Company (the “Company”), provided notice to the Company that he will voluntarily retire effective October 2, 2017. The Company’s related press release is attached as Exhibit 99.1 and is incorporated by reference herein.

(e) On February 7, 2017, the Compensation Committee (the “ Committee ”) of the Board of Directors of Willis Towers Watson Public Limited Company, a company organized under the laws of Ireland (the “ Company ”), approved a change to the financial metrics used for the performance goals that apply to annual awards granted under the Company’s Annual Incentive Plan (“ AIP ”) to each of the executive officers of the Company, including the Company’s named executive officers. Under the existing AIP structure, each officer is eligible to receive an annual award expressed as a percentage of the officer’s base salary.

On October 27, 2016, Willis Towers Watson Public Limited Company (the “Company”) announced several leadership changes, effective immediately, including a change impacting Tim Wright, who was a “named executive officer” in the Company’s most recent Proxy Statement. These changes include the following: • Todd Jones, Co-head of North America, will be changing roles to become the Head of Corporate Risk and Broking. • Carl Hess, Co-head of North America, will be changing roles to become the Head of Investment, Risk and Reinsurance. • Joe Gunn, Northeast Region Lead of North America, will be changing roles to become the Head of North America. • Anne Pullum, Head of Strategy, will be taking on additional responsibilities as the Chief Administrative Officer for Willis Towers Watson.

On October 25, 2016, Willis Towers Watson Public Limited Company (“Willis Towers Watson”) and Mr. Dominic Casserley confirmed that Mr. Casserley will be leaving the company following the expiration of his employment agreement on December 31, 2016. Therefore, Mr. Casserley will resign as President and Deputy Chief Executive Officer and as a member of our board of directors, effective December 31, 2016, at the conclusion of his employment term.

(e) On July 20, 2016, the Compensation Committee (the “Committee”) of the Board of Directors of Willis Towers Watson Public Limited Company, a company organized under the laws of Ireland (the “Company”), approved a change to the financial metrics used for the performance goals that apply to annual awards granted under the Company’s Annual Incentive Plan (“AIP”) to each of the executive officers of the Company, including the Company’s named executive officers. Under the existing AIP structure, each officer is eligible to receive an annual award expressed as a percentage of the officer’s base salary.

(e) As previously disclosed by Willis Towers Watson Public Limited Company (the “ Company ”) in Current Report on Form 8-K, filed on March 1, 2016, the Company entered into an employment agreement with Mr. Haley upon his appointment as the Company’s Chief Executive Officer and, in connection with such employment agreement, announced its intention to grant a supplemental restricted share unit award upon shareholder approval of amendments to the Company’s 2012 Equity Incentive Plan, including an increase in the number of shares authorized for issuance under the Plan. As discussed in

(e) Employment Agreement Willis Towers Watson Public Limited Company, an Irish public limited company (the “ Company ”) has entered into an Employment Agreement with its Chief Executive Officer, John J. Haley (the “ Employment Agreement ”), effective March 1, 2016, memorializing the terms of his employment as summarized below. Term. The term of the Employment Agreement is from March 1, 2016 through December 31, 2018, unless otherwise extended by mutual agreement of the parties. Base Salary. Under the Employment Agreement, Mr. Haley’s annual base salary will increase from $1.04 million to $1.2 million. A portion of his salary in excess of $1 million may be deferred until his retirement under a compensation deferral plan in order to maximize the tax deductibility of Mr. Haley’s compensation under Section 162(m) of the Internal Revenue Code. Benefits. Mr.

(c) On February 4, 2016, the Board of Directors of Willis Towers Watson appointed Susan D. Davies to the roles of the company’s controller and principal accounting officer for the company, effective February 4, 2016. Ms. Davies (age 47) previously served as the controller and principal accounting officer for Towers Watson & Co. from November 13, 2015 to January 4, 2016, and before that she was Global Director of Internal Audit for Towers Watson since March 2010. Ms. Davies previously held the same position in an interim capacity for Watson Wyatt and Towers Watson from October 2009 through March 2010. Prior to that, Ms. Davies served as the Director of Internal Audit for the Americas for Watson Wyatt from November 2007 to October 2009. Prior to joining Watson Wyatt, Ms. Davies served in various roles with PricewaterhouseCoopers from 1997 to 2007. 2

As previously disclosed in Willis’ Current Report on Form 8-K filed with the SEC on December 22, 2015, in anticipation of the combination of Willis and Towers Watson & Co., the board of directors of Willis approved, effective as of the Effective Time, the resignation of certain directors of Willis and the appointment of the director designees of Towers Watson. The board of directors of Willis also appointed James McCann as Chairman of the Board of Willis Towers Watson and determined that all members of the board of directors of Willis Towers Watson (other than Messrs. John J. Haley and Dominic Casserley) were independent within the meaning of the independent director standards of the SEC and under the NASDAQ qualification standards.