Document:

EX-10.1

 Exhibit 10.1 

EMPLOYMENT AGREEMENT 
 Between 

BASELL SERVICE COMPANY B.V., with its registered office in Rotterdam (the Company) 

And 
 THOMAS AEBISCHER of Im Breitloo 2,8802 Kilchberg
SWITZERLAND (you) 
 This employment agreement (Agreement) sets out the terms and conditions upon which the Company offers you employment with
it whilst employed in The Netherlands for the Term specified below. This Agreement is made with reference to that certain letter and offer of employment, dated 30 October 2015 (Offer Letter), and issued with regard to your employment
within the LyondellBasell Group. 
  

	1	Commencement 

 This Agreement applies to your employment with effect from 1 January 2016. 

 

	2	Position 

 The Company will employ you on a full-time basis in the position of Executive Vice President,
Chief Financial Officer of the LyondellBasell Group, or such other position determined by the Company. You will report to the Chief Executive Officer, and will work under the direction of the person in that position. 

You will initially be based at the Company’s premises at Rotterdam, The Netherlands, but you agree to transfer your employment to Houston, Texas when
lawful authorization is obtained for your eligibility to work in the United States. 
  

	3	Term 

 Your employment pursuant to this Agreement is intended to be for a definite term of one year (the
Term), subject to termination in accordance with section 10 below and the requirements of applicable law. The Agreement ends by operation of law, without notice being required, at the end of the Term. The Term may be shortened or
extended at the sole discretion of the Company, depending on the timing of your success in obtaining lawful authorization for eligibility to work in the United States and the actual transfer of your employment to Houston, Texas, as anticipated
pursuant to the Offer Letter. In any event, this Agreement will end as of the date that you obtain lawful authorization to work in the United States. You will at that point in time transfer your employment to Houston, Texas in accordance with the
terms and conditions set forth in the Offer Letter. 

  

  
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	4	Duties 

 You will perform the duties and have the responsibilities and authority customarily performed
and held by an employee in your position or as the Company may otherwise assign to you from time to time. The Company may assign you to perform work for another LyondellBasell Group Member from time to time. Depending on the nature of your role, the
Company may require you to travel (both locally and internationally) from time to time. Without limiting your obligations to the Company, during your employment you must serve the Company faithfully and diligently to the best of your ability and
perform to the best of your abilities and knowledge the duties the Company assigns to you from time to time. 
 You agree that the Company may, without the
need to terminate the employment relationship and in its sole discretion, modify or remove your assigned duties from time to time without additional compensation to you, in accordance with the Company’s needs. This is provided the Company
believes you are reasonably able to perform such modified or remaining duties. 
  

	5	Hours 

 Your normal hours of work are an average of 40 hours each week, worked during the Company’s
normal business hours. 
 From time to time, you may be required or need to work additional hours as necessary for the performance of your role. These
additional hours can include hours outside normal business hours, or on weekends and public holidays. You are not entitled to an overtime payment or time off in lieu for work performed during such additional hours because your remuneration takes
this requirement and need into account. 
  

	6	Remuneration & Expenses 

 Your compensation package will be as set forth in the Offer Letter.

 The Company will reimburse you for work-related expenses in accordance with and subject to its expense reimbursement policy, as amended from time to
time. The Company will only reimburse Company-approved expenses which are supported with evidence of the expense (e.g. original receipts). Please refer to the Company’s expense reimbursement policy. 

The Company may, subject to any relevant legal requirements, deduct from your remuneration any amounts that you owe to the Company, any other LyondellBasell
Group Member, or in relation to any benefit plan or arrangement provided or arranged by the Company. 
  

	7	30% Ruling 

 Insofar as article 9 of the Implementation Regulation Withholding Tax Law 1965 is
applicable, you will receive a tax-free reimbursement for extraterritorial expenses. You agree that your salary under section 6 above will be reduced in such a manner such that 100/70 of the reduced salary is equal to the amount of the salary
set out in section 6 above. 

  

  
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 Insofar as the paragraph immediately above is applicable, you will receive a reimbursement for extraterritorial
expenses equal to 30/70 of the reduced salary described in in the paragraph immediately above. You acknowledge you are aware of the fact that an adjustment in salary made in accordance with the paragraph immediately above may have an impact on other
compensation and benefits (for example pension and social insurance benefits) related to your salary. 
 Should the 30% Ruling be deemed not applicable by
the Dutch Tax Authorities, the company will consider providing the equalization of your taxes for the duration of your employment in the Netherlands. 
  

	8	Discretionary Benefits 

 The Company may, at its discretion, from time to time provide you with other
non-mandatory benefits and remuneration. The Company may replace, change or cease providing these benefits and remuneration and the terms on which they are provided at any time at its discretion. In such case, you will not have an entitlement to
continue to receive these benefits and remuneration or to receive any other payment, compensation or benefit in lieu. 
 Unless an authorized HR
representative of the Company advises you otherwise in writing, any benefit or remuneration apart from your salary will be a discretionary benefit to which this section 8 applies. 

The Company’s current discretionary benefits include but are not limited to: 
  

	(a)	a collective health scheme in which you may participate as long as you are mandatorily insured under the Dutch Medical Care Act (‘Zorgverzekeringswet”), in which respect the Company will pay such
contributions as are mandatory under Dutch law from time to time; 

  

	(b)	a collective pension scheme in which you will participate, subject to its rules from time to time; and 

  

	(c)	a leased car, provided to you subject to the applicable policy from time to time. 

  

	9	Leave, Holidays & Absence 

 Annual Vacation Leave and ADV Days 

You are entitled to vacation and ADV days each year in accordance with applicable law and Company policy as each applies from time to time. Each accrue
proportionally in relation to the length of employment during the calendar year. 

  

  
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 Sick Leave 

In the event you become unfit for work due to illness the Company will, if and to the extent obliged to do so under paragraph 7:629 Dutch Civil Code, pay 100%
of your salary during the first period of 12 months as long as you are employed by the Company and subject to applicable regulations. If the inability to work and employment continues beyond 12 months, the Company will pay 70% of your salary during
the second period of 12 months or until the end of employment with the Company (if this is earlier). Before granting leave due to illness, or during or after any such period of leave, and subject to the requirements of applicable law, the Company
may require you to provide to the Company satisfactory evidence confirming your illness or injury, which may include a medical certificate. 
 Other
Leave 
 The Company will grant other leave in accordance with applicable law and Company policy as each applies from time to time. 

Holidays 
 Unless the nature of your role requires
otherwise, you are generally entitled to paid days’ off on the public holidays observed by the Company. The Company will not provide you with any additional compensation for work you perform on a public holiday, unless otherwise required by law
or applicable Company policy as each applies from time to time. 
 Notice of Absence 

You must notify the Company immediately of every absence from work and its probable duration. Upon request by the Company, you must promptly provide the
Company with reasons for the absence. Company policy may set out additional requirements in this regard. 
  

	10	Corporate Apartment 

 The Company will provide a one-bedroom corporate apartment for the period of time
required to receive your U.S. Visa (not to exceed one year). This expense will be paid for on a direct bill basis with the Company, however, may have to be reported in the Proxy as a perquisite. 

 

	11	Termination 

  

	(a)	Your employment under this Agreement may be prematurely terminated at any time during the Term by the Company by giving notice while observing four (4) months’ notice and by you by giving notice while
observing two (2) months’ notice. Notice must be given in writing and will be effective as of the first day of the calendar month following the month in which the notice was given. 

 

	(b)	Your employment will in any event terminate by operation of law, or failing such, with mutual consent at the end of the calendar month in which you reach the age at which you become eligible for state pension benefits
(AOW) at the then applicable age. 

  

  
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	(c)	During any period of notice, the Company may, at its discretion: 

  

	 	(i)	require you to not attend for work or contact any customers or clients; 

  

	 	(ii)	require you to perform duties which are different to those which you were required to perform during the rest of your employment with the Company, provided only that you have the necessary skills and competencies to
perform the duties; 

  

	 	(iii)	limit or remove your access to the Company’s premises, telecommunications networks (including email and intranet) and electronic systems and data; or 

 

	 	(iv)	any combination of (i) - (iii). 

  

	(d)	Nothing in this section prevents the Company from terminating your employment without notice in the event of urgent reasons. 

  

	(e)	The Company may suspend you from work on full pay, if it has reason to believe you may have engaged in misconduct, in order for it to investigate the matter. The Company may limit or remove your access to the workplace
and the Company’s premises, telecommunications networks and electronic systems and data during any period of suspension. 

  

	12	Confidentiality 

 You acknowledge that Company has imposed on you a duty of confidentiality in respect of
Confidential Information. Thus, during and after the Term you are prohibited from disclosing to third parties or using for any purpose other than for your employment with the Company, any Confidential Information. Such prohibition will not apply to
the disclosure of Confidential Information if such disclosure is necessary in order for you to perform the duties of your employment with the Company, provided that you first ensure that the person or entity to whom disclosure is being made owes the
Company an obligation of confidentiality in respect of such Confidential Information no less strict than that owed by you. 
 Confidential
Information means, but is not limited to, any information relating to (a) the Company or any affiliated company of the Company (collectively the ‘Protected Companies’ and each a ‘Protected Company’) or the
business, prospective business, technical processes, computer software (both source code and object code), future product and service offerings, product weaknesses or failures, current or anticipated supplier or distribution agreements and
arrangements, customer contacts, customer feedback, win/loss information, pricing plans and discount rates, intellectual property rights, sales forecasts, hiring plans and personnel details, internal communications, budgetary information or
financial results or plans of any Protected Company, or (b) compilations of two or more items of such information whether or not each 

  

  
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individual item is in itself confidential, including without limitation price lists, lists of actual and prospective customers, information relating to research and development plans, sales and
marketing plans and tactics and development of new products which comes into your possession, is created by you or becomes known by you by virtue of you employment, and which is not generally available to the public or which provides a business
advantage to a competitor of a Protected Company. Confidential Information will also include (x) information, data, plans or communications provided by any third party to any Protected Company in confidence and to which you have access or which
you received in activities reasonably related to the your employment with the Company and (y) notes, summaries and information which has or may be derived or obtained from any information defined herein as Confidential Information. Confidential
Information does not include information which is published or is otherwise in the public domain prior to the receipt of such information by you; or which is or becomes publicly available on a non-confidential basis through no fault of you. 

 

	13	Intellectual Property 

 Insofar as the rights specified hereinafter are not vested in the Company by
operation of law on the grounds of the employment relationship between you and the Company, you hereby explicitly state that you will transfer and, insofar as possible, hereby transfer to the Company in advance any intellectual and/or industrial
property rights of whatever nature in or arising from ideas, concepts, discoveries, inventions, improvements and/or developments made or acquired by you in the discharge of your duties for the Company. 

You must promptly disclose to the Company fully and completely any and all of the ideas, concepts, discoveries, inventions, improvements and developments,
made or acquired by you in the discharge of the your duties for the Company. 
 You hereby irrevocably relinquish/waive for the benefit of the Company any
moral/personal rights as referred to in article 25, paragraph 1 sub a, b and c of the Copyright Act (“Auteurswet”) and article 5, paragraph 1 of the Neighbouring Rights Act (“Wet op de Naburige Rechten”), that may vest in you in
respect of the work products referred to in the previous paragraphs of this section. 
 You acknowledge that the salary under this Agreement includes
reasonable compensation for the fact that the intellectual and industrial property rights, referred to above, will vest in the Company by operation of law or for the transfer to the Company of such rights pursuant to paragraph 1 of this section.

  

	14	Conduct after Employment Ends 

 Appendix A applies to this Agreement. You must notify any person
who offers you employment or work of your obligations under this section 14 and Appendix A. You acknowledge and agree the Company may notify any third-party of your obligations under this section 14 and Appendix A,
including any new or prospective employer or other person with whom you enter, or might enter, into a working relationship. 

  

  
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	15	Liquidated Damages 

 If you breach any of your obligations stated in Appendix A, or with respect
to confidentiality (including those under section 12), or both, you will immediately, without any notice of default being required, forfeit to the Company a penalty/liquidated damages for each breach thereof, amounting to EUR 25,000
(twenty-five thousand Euros) and a penalty/liquidated damages amounting to EUR 500 (five hundred Euros) for each day that such breach continues, without prejudice to the Company’s rights to claim (a) full compliance with the relevant
contractual obligations and/or (b) actual damages instead of the penalty/liquidated damages. 
 Payment of the penalties referred to in the previous
paragraph will not release you from your obligations under this Agreement. With respect to the penalties provided for in the previous paragraph, the parties to this Agreement intend to derogate from the provisions of article 7:650 paragraphs 3 and 5
of the Dutch Civil Code both in respect of the amounts of the penalties and to the extent that these penalties can be used by the Company for its own benefit. 
  

	16	Loyalty and Conflicts of Interest 

 You must use all reasonable efforts to promote the interests of the
Company and the LyondellBasell Group, act in the Company’s and the LyondellBasell Group’s best interests and devote your time and attention during your working hours exclusively to the discharge of your duties. 

You represent and warrant to the Company that you are under no obligations or commitments, whether contractual or otherwise, that are inconsistent with your
obligations under this Agreement or that would otherwise prohibit you from performing your duties with the Company. 
 Without limiting your duties to the
Company or your obligations apart from this section 16, during your employment you must not engage in any other employment, enterprise or business without the Company’s prior written consent. 

The Company’s policies (refer to section 18 below) contain further requirements in relation to conflicts of interest. Your obligations under this
section 16 do not limit those requirements. 
  

	17	Occupational Health and Safety 

 You must comply with all occupational health & safety standards
and directions applicable to your workplace and your employment, including, but not limited to, the applicable Occupational Health and Safety (ARBO) and environmental regulations. You must cooperate with the Company to ensure the safety of any
individuals who may be affected by your work. You must take reasonable care for your own health and safety, and for the health and safety of other individuals who may be affected by your acts or omissions, while in the workplace and while otherwise
performing any duties or activities in connection with your employment. 

  

  
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	18	Code of Conduct and Company Policies 

 You must comply with the LyondellBasell Code of Conduct as amended
from time to time. Further, you agree to affirm your commitment to comply with the LyondellBasell Code of Conduct at such time as the Company requires from time to time. 

You must comply with all of the Company’s and LyondellBasell Group’s other policies and procedures that apply to you from time to time. The Company
or LyondellBasell Group, as applicable, may adopt, change, replace or rescind its policies and procedures (including the LyondellBasell Code of Conduct) from time to time in its or their absolute discretion and without any limitation (implied or
otherwise) on its or their ability to do so. The Company’s and LyondellBasell Group’s policies and procedures may be found on the Company’s intranet. The Company’s and LyondellBasell Group’s policies and procedures do not
and will not form part of this Agreement. 
  

	19	Miscellaneous 

 This Agreement is governed by the law applicable in the Netherlands and the parties
irrevocably and unconditionally submit to the exclusive jurisdiction of the courts of the Netherlands. 
 This Agreement, including Appendix A, constitutes
the entire agreement and understanding of the parties as to your employment and, in relation to that subject matter, supersedes any prior understanding or agreement between the parties and any prior condition, warranty, indemnity or representation
imposed, given or made by a party. Any offer letter or cover letter which accompanied or forwarded this Agreement is not part of this Agreement. 
 This
Agreement may only be altered in writing signed by each party. 
 Part or all of any section of this Agreement that is illegal or unenforceable will be
severed from this Agreement and the remaining provisions of this Agreement continue in force. 
  

	20	Definitions 

 In this Agreement: 

 

	(a)	“LyondellBasell Group” refers to LyondellBasell Industries N.V. and its subsidiaries, including without limitation the Company. 

 

	(b)	“LyondellBasell Group Member” refers to any member of the LyondellBasell Group. 

  

  
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	SIGNED by THOMAS AEBISCHER	 		 	
			
	 /s/ Thomas Aebischer
	 		 	 November 6, 2015

	Signature	 		 	Date
			
	SIGNED for and on behalf of BASELL SERVICE COMPANY B.V. 	 		 	
			
	 /s/ Elisa Garcia
	 		 	 November 6, 2015

	Signature	 		 	Date
	Elisa Garcia, HR Director, EAI Mfg.	 		 	

  

							
		 		  		 	
		 		  		 	

  
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 APPENDIX A 

1. As used in this Exhibit A, the following terms have the meanings set out below: 

“Business” means the business in which the LyondellBasell Group is engaged and for which you have direct or indirect
responsibilities during the term of your employment with the Company. 
 “Competitor” means any business or
enterprise engaged in the Business. 
 Other capitalized terms not defined in this Exhibit A have the meaning set out in the Agreement. 

2. Subject to the exceptions set forth in this Appendix A, you agree that you will not, for a period of one (1) year after your termination of employment
with the Company (the “Prohibited Period”), regardless of the reason for such termination, directly or indirectly: 
  

	(a)	carry on or engage in the Business in competition with a LyondellBasell Group Member, or 

  

	(b)	render services to, or be affiliated with, a Competitor. 

 3. Nothing in this Appendix A will prevent you
during the Prohibited Period from rendering professional services to a Competitor (but not as an employee of a Competitor) or being affiliated with a diversified entity, so long as your affiliation with that Competitor or entity, as applicable, does
not: 
  

	(a)	cause you to use or disclose any Confidential Information, and 

  

	(b)	involve you having direct or indirect responsibilities with respect to any aspect of the entity’s business that engages in the Business. 

4. You agree and expressly promise that, during the Prohibited Period, you will not directly or indirectly: 

 

	(a)	recruit, solicit or induce any employee, consultant, or independent contractor of a LyondellBasell Group Member to terminate or lessen such person’s employment or other relationship with the LyondellBasell Group
Member, or 

  

	(b)	directly or indirectly solicit any then-current customer or business partner of a LyondellBasell Group Member to terminate, alter, or modify its relationship with the LyondellBasell Group Member. 

  

 APPENDIX A 

 

 5. Despite the restrictions in this Appendix A, nothing in it prohibits: 

 

	(a)	you from making general advertisements for employment or engagement, so long as such advertisements are not specifically targeted at any employees, consultants, or independent contractors of a LyondellBasell Group
Member, or 

  

	(b)	any other person or entity from hiring, inducing, or attempting to induce, solicit, or encourage any employee or other service provider of a LyondellBasell Group Member to leave their employ or service, provided you do
not directly or indirectly participate in or direct the prohibited activity, and provided further that this clause (b) of paragraph 5 will not apply with respect to the solicitation of any employee of a LyondellBasell Group Member who is at
that time an executive officer of the LyondellBasell Group or an employee of a LyondellBasell Group Member directly reporting to any such executive officer. 

6. Despite the restrictions contained in this Appendix A, neither you nor any of your affiliates may own an aggregate of more than 5% of the outstanding stock
of any class of any corporation, if such stock is listed on a national securities exchange or regularly traded in the over-the-counter market by a member of a national securities exchange, without violating the provisions of this Appendix A,
provided that neither you nor any of your affiliates has the power, directly or indirectly, to control or direct the management or affairs of any such corporation and is not involved in the management of such corporation. 

7. You acknowledge and agree that: (i) the purpose of the covenants set forth in this Appendix A (the “Restrictive Covenants”) is
to protect the goodwill, trade secrets and other Confidential Information of the Company and of the LyondellBasell Group; (ii) because of the nature of the business in which the Company is engaged and because of the nature of the Confidential
Information to which you have or will have access, it would be impractical and excessively difficult to determine the actual damages of the Company in the event you breached any such covenants; and (iii) remedies at law (such as monetary
damages) for any breach of your obligations under the Restrictive Covenants would be inadequate. You therefore agree and consent that if you commit any breach of a Restrictive Covenant, the Company will have the right (in addition to, and not in
lieu of, any other right or remedy that may be available to it) to temporary and permanent injunctive relief from a court of competent jurisdiction, without posting any bond or other security and without the necessity of proof of actual damage. 

You and the Company expressly represent that the Restrictive Covenants are reasonable in all respects and are necessary to protect the legitimate business
interests of the Company. The parties further acknowledge and agree that the LyondellBasell Group conducts the Business on a worldwide basis and you will have Confidential Information regarding the business conducted by LyondellBasell Group in each
location where it is conducted and you will be materially associated with the LyondellBasell Group’s goodwill. You expressly acknowledge and agree that any violation of the Restrictive Covenants would inevitably cause you to disclose
Confidential Information of the LyondellBasell Group. 

  

 APPENDIX A 

 

 If any portion of the Restrictive Covenants is hereafter determined to be invalid or unenforceable in any
respect, such determination will not affect the remainder thereof, which will be given the maximum effect possible and shall be fully enforced, without regard to the invalid portions. In particular, without limiting the generality of the foregoing,
if the covenants set forth in this Appendix A are found by a court or an arbitrator to be unreasonable, you and the Company agree that the maximum period, scope or geographical area that is found to be reasonable shall be substituted for the stated
period, scope or area, and that the court or arbitrator shall revise the restrictions contained herein to cover the maximum period, scope and area permitted by law. If any of the Restrictive Covenants are determined to be wholly or partially
unenforceable in any jurisdiction, such determination will not be a bar to or in any way diminish the Company’s right to enforce any such covenant in any other jurisdiction. 

Acknowledged: 
  

					
	 /s/ Thomas Aebischer
	 		 	 /s/ Elisa Garcia

	THOMAS AEBISCHER	 		 	For the CompanyEX-10.2

 Exhibit 10.2 
  

 
 October 30, 2015 

Mr. Thomas Aebischer 
 Im Breitloo 2,8802 Kilchberg 

Switzerland 
 Dear Thomas: 

We are pleased to confirm an offer of employment for the position of Executive Vice President, Chief Financial Officer of the LyondellBasell Group
(“LYB”), reporting directly to me, and eventual employment by Lyondell Chemical Company (the “Company”), based in Houston, Texas. Your initial employment will be with Basell Service Company B.V., an affiliate of the Company based
in Rotterdam, The Netherlands (“BSC”), with the expectation that you will be subsequently transferred to employment with the Company in Houston after approximately one year of working in Rotterdam, provided that you are able to obtain the
necessary visa to work for the Company in the United States. This offer of employment is conditioned on your satisfactory completion of certain requirements, as more fully explained in this letter. Your employment is subject to the terms and
conditions set forth in this letter, which override anything said to you during your interviews or any other discussions about your employment with the Company or its parents, subsidiaries or affiliates, or any of their directors, officers,
employees or other representatives. You will also serve as a member of LYB’s Leadership Team, be ratified as a Section 16 Officer by LYB’s Supervisory Board, and be nominated to become a Member of the Management Board of LYB upon
shareholder approval in May 2016. As discussed, your anticipated start date is on or before January 1, 2016. 
 In your capacity as EVP, Chief
Financial Officer, you will perform duties and responsibilities that are reasonable and consistent with such position as may be assigned to you from time to time. You agree to devote your full business time, attention, and best efforts to the
performance of your duties and to the furtherance of LYB’s and its affiliates’ interests. 
 In consideration of your services, your compensation
package will be as follows:
  

	 	•	 	Your annualized base salary will be $725,000.00 USD per year (“annual base salary”), which will be payable in accordance with the standard payroll practices of BSC or the Company (as applicable). When employed
in the U.S., your annual base salary will be paid on a bi-weekly basis as earned at the rate of $27,884.62 USD, and subject to all withholdings and deductions required by law. The payment of your annual base salary will be on a monthly basis as
earned while you are employed in the Netherlands, and will be converted to Euros at the applicable rate upon hire. More specific information about the payment of salary during your assignment in Rotterdam will be provided to you separately.

  

	 	•	 	You will be eligible to participate in the following incentive programs applicable to your position level. Except as otherwise set forth below, participation in these incentive programs is subject to the terms
and conditions of these programs and may be modified by LYB or the Company at any time. 

  
  

1 

	 	•	 	Short-Term Incentive Plan. You will be eligible to participate in the LyondellBasell Industries Short-Term Incentive Plan for 2016, based on your start date. The target annual bonus percentage for 2016 is
expected to be 85% of your annual base salary. The actual payout is dependent on corporate, award unit and individual performance. 

  

	 	•	 	Long-Term Incentive Plan. You will be eligible to participate in the LyondellBasell Industries 2010 Long-Term Incentive Plan (the “LTI Plan”) for the 2016 plan year, which includes the grant of
equity-based awards expected to provide generally for target payments approximately equal to 300% of your annual base salary but subject to proration based on hire date. The 2016 equity grants are expected to include a mix of performance share unit
awards, time-vested restricted stock units, and non-qualified stock options, granted pursuant to the LTI Plan documents and standard award agreements in place at the time of the grant. 

 

	 	•	 	You will be eligible for a new hire equity grant with a fair market value of $1,500,000 USD of which 60% will be made in the form of restricted stock units and 40% will be made in the form of non-qualified stock options
with a three-year vesting schedule (1/3rd ratable vesting each year). The allocation of the number of shares subject to the various grants of these equity awards will be determined after your
start date and pursuant to formal approval from the Compensation Committee. 

  

	 	•	 	As an EVP and member of the LYB Leadership Team, you will be subject to LYB’s Share Ownership Guidelines. In summary, these Guidelines require that executives at the Vice President level and above accumulate LYB
shares at a rate equal to a multiple of base salary, with the required multiple varying by level. A copy of these Guidelines is enclosed. 

  

	 	•	 	Once you begin working in the U.S., your vacation eligibility is expected to be 160 hours per year and subject to the terms and conditions of the Company’s applicable vacation policy; prior to such time,
you will be eligible for a holiday allowance, as specified in a separate Employment Agreement governing your Rotterdam assignment. You also will be eligible for recognized holidays and floater holidays in accordance with BSC or Company policy, as
applicable. 

  

	 	•	 	As a designated executive officer of LYB, it is expected that you will be eligible to participate in the amended and restated Executive Severance Plan (the “Severance Plan”, dated June 1, 2015) once you
are employed by the Company in the U.S. The terms of the Severance Plan are subject to change in the future; however, once you become a participant, you will be granted any benefits in effect at the time should your employment with the Company sever
without “cause” or you leave for “good reason” as such terms are defined in the Severance Plan. Prior to your entry into the Severance Plan, the Company will require that you execute a participation agreement (substantially in
the form as enclosed with this letter) that evidences your agreement to participate in the Severance Plan and to comply with the terms, conditions, and restrictions of the participation agreement and the Severance Plan, including certain
confidentiality provisions and restrictive covenants. 

  

	 	•	 	You will also be eligible for the LYB Relocation program for your relocation to Houston, Texas. 

  

	 	•	 	You will be eligible for reimbursement of any legal or administrative costs related to obtaining a visa to work in the U.S. 

  
  

2 

 As an employee of BSC or the Company, you will be eligible to participate in various company benefit programs, as
applicable. All pertinent benefits information will be given to you during your first week of employment, with instructions on enrollment. When you transfer employment to the Company in the U.S., you will become eligible to participate in the
Company’s 401(k) retirement plan. After you begin employment, additional information will be available to you on LYB’s intranet website. Participation in the benefit programs is subject to the terms and conditions of the programs
and may be modified by LYB, BSC, or the Company at any time. 
 Within a few days of your start date, we will meet with you to go over your local benefits.
When you transfer employment to the Company in the U.S., you will receive an email from Benefits Administration with a link to the U.S. benefits website. The U.S. benefits website allows you to enroll in your company benefits related to health and
insurance plans. Please review all of the available material carefully, as some of the benefits require enrollment within 31 days of receiving notification in the U.S. 

When you relocate to the U.S., random and for cause drug/alcohol testing, as allowed by Company policy and applicable law, are continuing conditions of
employment with the Company. You must also satisfy a background check prior to the start date of your employment. 
 By accepting this offer, you confirm
that you are able to accept this job and carry out the work that it would involve without breaching any legal restrictions on your activities, such as restrictions imposed by a current or former employer. You also confirm that you will inform the
Company about any such restrictions and provide the Company with as much information about them as possible, including any agreements between you and your current or former employer describing such restrictions on your activities. You further
confirm that you will not remove or take any documents or proprietary data or materials of any kind, electronic or otherwise, with you from your current or former employer to the Company without written authorization from your current or former
employer, nor will you use or disclose any such confidential information during the course and scope of your employment with the Company or its affiliates. If you have any questions about the ownership of particular documents or other information,
discuss such questions with your former employer before removing or copying the documents or information. 
 Please read, sign, scan and return the
following documents to Jackie Wolf at jackie.wolf@lyb.com to indicate your acceptance of this offer of employment. 
  

	 	•	 	Signed Offer Letter 

  

	 	•	 	Signed Rotterdam Employment Agreement 

  

	 	•	 	CV-OK Statement of Consent 

  

	 	•	 	2015 Rotterdam Pension Form 

  

	 	•	 	Personal Details Form 

  

	 	•	 	Confidentiality Agreement 

  

	 	•	 	Conflict of Interest Forms: 

  

	 	•	 	Receipt and Certification Form 

  

	 	•	 	Disclosure of Interest Form 

 When you relocate to the U.S., you must remain legally authorized to work in the
U.S. at all times while you are employed with the Company. On or before your first day of employment in the U.S., you will be provided with an I-9 form to complete, as well as information about the necessary identification documents. You will be
required to present the completed form and appropriate documentation to your HR contact at that time. 

  
  

3 

 This offer letter is not a contract of employment for any specific or minimum term. Except as otherwise may be
specifically provided in a separate written Employment Agreement: (1) any employment relationship the Company offers you for employment in the U.S. is terminable at will, which means our employment relationship is voluntary and based on mutual
consent, and (2) you may resign your U.S. employment, and LYB, the Company or any other applicable employing affiliate may terminate your U.S. employment at any time, for any reason, with or without cause or notice. Any prior oral or written
representations to the contrary are void, and our at-will relationship while employed with LYB, the Company or their affiliates within the United States may not be modified except by a formal written employment contract signed by the CEO of LYB or
his/her authorized designee. For information regarding your interim employment period while located in Rotterdam, please refer to the separate Employment Agreement that is being provided to you, which describes the terms and conditions of employment
applicable during this interim period. 
 We are confident you will find LYB to be both challenging and rewarding. We are enthusiastic about
having you join our team! If you have any questions regarding the offer, please feel free to contact me at 1-713-309-4774 or Jackie Wolf, SVP, Chief Human Resources Officer at 1-713-309-4970.

Lastly, please acknowledge your receipt of this letter and acceptance of this employment relationship by reading, signing and returning this letter no later
than November 5, 2015. 
 Sincerely, 
 /s/ Bhavesh V.
Patel 
 Bhavesh V. (Bob) Patel 
 Chief Executive Officer and
Chairman of the Management Board 
 By signature, I acknowledge receipt of this letter and my intent to commence employment on the start date set forth
above. 
  

					
	 /s/ Thomas Aebischer
	 		 	 November 6, 2015

	Signature	 		 	Date
			
	 Thomas Aebischer
	 		 	
	Printed Name	 		 	

  
  

4

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