Document:

EX-10.2

 Exhibit 10.2 

MASTER ASSIGNMENT, ASSUMPTION AND AMENDMENT DEED 

TO CHANGE IN CONTROL ARRANGEMENTS 

April 1, 2020 
 This
Master Assignment, Assumption and Amendment Deed relating to the Aon plc Amended and Restated Change in Control Plan, as amended, and the Aon plc Amended and Restated Senior Executive Combined Severance and Change in Control Plan (the
“Change in Control Arrangements”), is made by Aon plc (incorporated in Ireland with registered number 604607) whose registered office is at Metropolitan Building, James Joyce Street, Dublin 1, Ireland D01 K0Y8 (“Aon
Ireland”) to be effective as set forth below. 
 RECITALS 

WHEREAS, the Change in Control Arrangements are currently sponsored by Aon plc (incorporated in England with registered number
07876075) (“Aon UK”); 
 WHEREAS, the board of directors and the shareholders of Aon UK have approved the Scheme of
Arrangement (the “Scheme”), between Aon UK and the Holders of its Scheme Shares, following which the Scheme was sanctioned by the High Court of Justice in England and Wales; 

WHEREAS, the Scheme has become effective; 

WHEREAS, in connection with the Scheme, Aon UK was reorganized and became a wholly-owned subsidiary of Aon Ireland and each issued and
outstanding Class A ordinary share of Aon UK was cancelled and Aon UK shareholders received one Class A ordinary share of Aon Ireland (“Aon Ireland Ordinary Share”) for each Class A ordinary share of Aon UK so
cancelled (the “Aon UK Share Cancellation”) (such transactions, the “Reorganization”); 
 WHEREAS,
in connection with the Aon UK Share Cancellation, each outstanding equity award relating to Class A ordinary shares of Aon UK, and any other right to purchase or receive, or receive benefits or amounts based on, Class A ordinary shares of
Aon UK was converted to a right to purchase or receive, or receive benefits or amounts based on, as applicable, one Aon Ireland Ordinary Share for each Class A ordinary share of Aon UK underlying or relating to such award or right as of the
Scheme becoming effective (the “Effective Time”); 
 WHEREAS, as of the Effective Time, certain specified
compensation plans, trusts, agreements, programs or arrangements of Aon UK shall be assumed and adopted by Aon Ireland; 
 WHEREAS,
the Change in Control Arrangements constitute such compensation plans or arrangements; 
 WHEREAS, in connection with the Scheme, Aon
UK proposes to assign to Aon Ireland, and Aon Ireland proposes to adopt and assume, the Change in Control Arrangements and all of Aon UK’s rights and obligations under each Change in Control Arrangement (the “Assumption”); 

  
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 WHEREAS, in connection with the Scheme, Aon UK desires to amend the Change in Control
Arrangements to: (i) provide for the appropriate substitution of Aon Ireland in place of Aon UK, (ii) provide, for the avoidance of any doubt, that the Reorganization does not constitute a change-in-control under the terms of any such arrangement, (iii) provide for the appropriate substitution of Aon Ireland Ordinary Shares in place of ordinary shares of Aon UK and, as necessary or
appropriate, to reflect the issuance of Aon Ireland Ordinary Shares or rights over Aon Ireland Ordinary Shares (rather than ordinary shares of Aon UK or rights over such shares) and the conversion of ordinary shares of Aon UK to Aon Ireland Ordinary
Shares, and (iv) comply with applicable Irish, English or U.S. corporate or tax law requirements, and to make any other conforming or clarifying changes as may be necessary or appropriate; 

WHEREAS, the Board of Directors of Aon UK has determined it is advisable and in the best interests of Aon UK and its shareholders to
amend the Change in Control Arrangements to reflect the Reorganization and as set forth below; and 
 WHEREAS, Aon Ireland and Aon UK
desire to enter into this Master Assignment, Assumption and Amendment Deed to Change in Control Arrangements to reflect the assignment by Aon UK to Aon Ireland and Aon Ireland’s assumption and adoption of all of Aon UK’s rights and
obligations under the Change in Control Arrangements and to amend the Change in Control Arrangements to facilitate the Assumption and as may be consistent with the provisions of the Scheme. 

NOW THIS DEED WITNESSES AS FOLLOWS: 

A.       Aon Ireland hereby declares, undertakes and agrees for the benefit of each participant in the
Change in Control Arrangements that, with effect from the Effective Time, it shall: 
 1.       accept
assignment of and assume the Change in Control Arrangements from Aon UK; 
 2.       undertake and
discharge all of the rights and obligations relating to sponsorship of the Change in Control Arrangements which have been undertaken and were to be discharged by Aon UK prior to the Effective Time; 

3.       exercise all of the powers of the plan sponsor relating to the Change in Control Arrangements
which were exercised by Aon UK prior to the Effective Time; and 
 4.       be bound by the terms of the
Change in Control Arrangements so that Aon Ireland will be bound by the requirements, without limitation, that any payments or benefits that have been paid or are payable to any participants in the Change in Control Arrangements shall be subject to
the same terms and conditions of the applicable Change in Control Arrangement as in effect immediately prior to the Effective Time, save for such changes as are necessary to effectuate and reflect the Assumption, and all outstanding awards or other
benefits which have been made under the Change in Control Arrangements shall remain outstanding pursuant to the terms set forth herein. 

  
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 B.       In consideration of the premises and mutual
covenants and agreements herein contained, the Change in Control Arrangements are hereby amended, effective as of April 1, 2020, by Aon UK’s authorized officers as follows: 

1.       all references in the Change in Control Arrangements to Aon UK or its predecessors are hereby
amended to be references to Aon Ireland, except where the context dictates otherwise; 
 2.       all
references to the board of directors (or relevant committee of the board of directors) in the Change in Control Arrangements shall henceforth be taken to be references to the board of directors of Aon Ireland (or relevant committee of the board of
directors of Aon Ireland), except where the context dictates otherwise; 
 3.       all references to
ordinary shares of Aon UK or rights to ordinary shares of Aon UK (or rights to receive benefits or other amounts by reference to those shares) are hereby amended to be references to Aon Ireland Ordinary Shares (or rights to receive benefits or other
amounts by reference to Aon Ireland Ordinary Shares determined in accordance with the terms of the applicable Change in Control Arrangement), except where the context dictates otherwise; and 

4.       each Change in Control Arrangement is hereby amended to provide, for the avoidance of any doubt,
that the Reorganization and any related transactions pursuant to the Scheme shall not constitute a change in control under the Change in Control Arrangement. 

C.       This Assignment, Assumption and Amendment Deed shall be governed by and construed in accordance
with the laws of Ireland. 
 IN WITNESS WHEREOF, this Master Assignment, Assumption and Amendment Deed has been executed and
delivered by each of the parties on the date first written above. 
 [Signature Page Follows.] 

  
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 GIVEN UNDER THE COMMON SEAL OF 

 

							
	Aon plc (Ireland)	  	                                     
                       	  	 	/s/ Molly Johnson                            	 
			
		  		  	 	Duly Authorized                                	 
			
	  
 in the presence of:

 
 Witness:

 
 Signature:    /s/ Elizabeth
Moore            
  

Address:                        
                          
  

Occupation
    Attorney                           
	  		  	 	

	 
			
	EXECUTED AND DELIVERED AS	  		  			
			
	A DEED BY	  		  			
			
	Aon plc acting by	  		  	 	/s/ Molly Johnson                    	 
			
		  		  	 	Duly Authorized	 
			
	in the presence of:	  		  			
			
	Witness:	  		  			
			
	Signature:    /s/ Elizabeth Moore            	  		  			
			
	Address:                                     
             	  		  			
			
	Occupation     Attorney                           	  		  			

  
 4EX-10.3

 Exhibit 10.3 

MASTER AMENDMENT TO THE 

REMAINING PLANS 

April 1, 2020 
 This
Master Amendment to the Aon Supplemental Savings Plan, as amended, Aon Corporation Supplemental Employee Stock Ownership Plan, as amended, Aon Deferred Compensation Plan, Aon Stock Award Plan, the Employment Agreement (the “Davies
Agreement”) dated as of October 3, 2007, between Aon Corporation and Christa Davies (“Ms. Davies”), as amended, and the Amended and Restated Change in Control Agreement, dated as of November 13,
2009, as amended (the “Case Agreement”) between Aon Corporation and Gregory Case (“Mr. Case” and together with Ms. Davies, the “Executives”) (the “Remaining
Plans”), is adopted by Aon Corporation, a Delaware corporation (the “Company”), to be effective as set forth below. 

RECITALS 
 WHEREAS,
Aon plc (incorporated in England with registered number 07876075) (“Aon UK”), the direct parent of the Company, was reorganized (the “Reorganization”) effective April 1, 2020 pursuant to a Scheme of Agreement
(the “Scheme”) approved by Aon UK’s shareholders on February 4, 2020 and, as a result of the Reorganization, Aon UK became a subsidiary of Aon plc (incorporated in Ireland with registered number 604607) (the
“Parent”) and each Class A ordinary share of Aon UK was cancelled and Aon UK shareholders received one Class A ordinary share of the Parent (“Aon Ireland Ordinary Share”) for each Class A
ordinary share of Aon UK so cancelled (the “Aon UK Share Cancellation”); 
 WHEREAS, in connection with the Aon UK
Share Cancellation, each outstanding equity award under the Remaining Plans, if and as applicable, and any other right to purchase or receive, or receive benefits or amounts based on, Class A ordinary shares of Aon UK was converted to a right
to purchase or receive, or receive benefits or amounts based on, as applicable, one Aon Ireland Ordinary Share for each Class A ordinary share of Aon UK underlying or relating to such award or right as of the Scheme becoming effective; 

WHEREAS, the Company was previously reorganized (the “Prior Reorganization”) effective April 2, 2012 pursuant to
an Agreement and Plan of Merger and Reorganization approved by the Company’s stockholders on March 16, 2012, as a result of which the Company became a direct or indirect subsidiary of Aon UK, and, in connection with such Prior
Reorganization, the Remaining Plans had been amended to, among other things, provide for the appropriate substitution of Aon UK in place of the Company, where applicable, to provide for the grant, issuance, acquisition, delivery, holding or purchase
of, or otherwise relate to or refer to, in place of shares of the Company’s common stock, Aon UK ordinary shares or rights to Aon UK ordinary shares, as applicable (or rights to receive benefits or amounts by reference to Aon UK ordinary
shares), on a one-for-one basis, to provide that the Prior Reorganization shall not constitute a
change-in-control under any such plan, arrangement or agreement and to make any other conforming or clarifying changes as may be necessary to reflect the Prior
Reorganization; 

  
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 WHEREAS, in connection with the Scheme, with the exception of certain specified
equity compensation plans, the underlying award agreements outstanding thereunder and certain specified change-in-control plans and agreements, which are to be assumed
by the Parent, the Company shall retain sponsorship of and all rights and obligations under the employee benefit plans and programs and employment contracts and arrangements it sponsors or is contractually bound by; 

WHEREAS, in connection with the Scheme, such employee benefit plans and programs and employment contracts and arrangements shall be
amended to provide for the appropriate substitution of the Parent in place of Aon UK, where applicable, to provide that the Reorganization shall not constitute a
change-in-control under any such plan, arrangement or agreement and to make any other conforming or clarifying changes as may be necessary to reflect the Reorganization;

 WHEREAS, Aon UK and the Parent entered into a Deed of Assumption on April 1, 2020 to effectuate the assignment by Aon UK to
the Parent and the Parent’s assumption and adoption of all of Aon UK’s rights and obligations under the plans and agreements to be assumed by the Parent and, to the extent the Remaining Plans provide for the issuance, acquisition,
delivery, holding or purchase of shares of, or otherwise relate to or reference, ordinary shares of Aon UK or rights to ordinary shares of Aon UK (or rights to receive benefits or other amounts by reference to those shares) to provide for the
amendment of the Remaining Plans to provide for the issuance, acquisition, delivery, holding or purchase of, or otherwise relate to or reference, Aon Ireland Ordinary Shares (or rights to receive benefits or other amounts by reference to Aon
Ireland Ordinary Shares determined in accordance with the Remaining Plans) on a one-for-one basis; 

WHEREAS, the Board of Directors of the Company has determined it is advisable and in the best interests of the Company and its
stockholders to amend the Remaining Plans to reflect the Reorganization and as consistent with the provisions of the Scheme and the Deed of Assumption; 

WHEREAS, Ms. Davies agrees to such amendment to the Davies Agreement; and 

WHEREAS, Mr. Case agrees to such amendment to the Case Agreement. 

NOW, THEREFORE, the Remaining Plans are hereby amended, effective as of April 1, 2020, by the Company’s authorized officers,
and, in the case of the Davies Agreement and the Case Agreement, the agreement of the respective Executives, as follows: 
  

	 	1.	 To the extent a Remaining Plan provides for the issuance, acquisition, delivery, holding or purchase of shares
of, or otherwise relate to or reference, ordinary shares of Aon UK or rights to ordinary shares of Aon UK (or rights to receive benefits or other amounts by reference to those shares) such Remaining Plan is

  
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hereby amended to provide for the issuance, acquisition, delivery, holding or purchase of, or otherwise relate to or reference, Aon Ireland Ordinary Shares (or rights to receive benefits or other
amounts by reference to Aon Ireland Ordinary Shares determined in accordance with the terms of such Remaining Plan) on a one-for-one basis. 

 

	 	2.	 Each Remaining Plan is hereby amended to change the Remaining Plan’s definition of change in control, if
any, and all references in the Remaining Plan to a change in control to a change in control of Parent and to provide that the transactions occurring on April 1, 2020 pursuant to the Scheme shall not constitute a change in control under the
Remaining Plan. 

  

	 	3.	 All references in the Case Agreement to Aon UK are hereby amended to be references to Aon Ireland, except where
the context dictates otherwise. 

 [Signature Page Follows.] 

  
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 IN WITNESS WHEREOF, the Company has caused this Master Amendment to be executed on
its behalf by its duly authorized officers and the Executives have each executed this Master Amendment as it applies to the Davies Agreement and Case Agreement, respectively, this 1st day of
April, 2020. 
  

			
	Aon Corporation
		
	By:	 	 /s/ Molly Johnson

			
	Name:	 	Molly Johnson
	Title:	 	Vice President and Secretary

  

	
	Executive
	
	 /s/ Christa Davies

	Name: Christa Davies
	
	Executive
	
	 /s/ Gregory C. Case

	Name: Gregory C. Case

  
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