Document:

EX-10.1

Exhibit 10.1

CHANGE IN CONTROL

TERMINATION BENEFITS AGREEMENT

THIS CHANGE IN CONTROL TERMINATION BENEFITS AGREEMENT (this “Agreement”), dated as of the
19th day of September, 2014 (the “Effective Date”) is between Endeavour Energy UK
Limited (the “Company”), and Derek Neilson (the “Executive”).

W I T N E S S E T H:

WHEREAS, the Company considers it essential to the best interests of the Company and its
stockholders executive management be encouraged to remain with the Company and to continue to
devote full attention to the Company’s business in the event of a transaction or series of
transactions that could or do result in a change in control of Endeavour International Corporation
(“EIC”);

WHEREAS, the Company recognizes that the possibility of a change in control of EIC and the
uncertainty which it may raise among management may result in the departure or distraction of
management personnel to the detriment of the Company and its stockholders;

WHEREAS, the Executive is a key executive-level employee of the Company;

WHEREAS, the Company believes that the Executive has made (and will continue to make) valuable
contributions to the Company;

WHEREAS, should EIC receive a proposal for, or otherwise consider, any such transaction, in
addition to the Executive’s regular duties, the Executive may be called upon to assist in the
assessment of proposals, advise management and the Board of Directors of EIC (the “EIC Board”) as
to whether a proposed transaction would be in the best interests of EIC and its stockholders, and
take such other actions as the EIC Board might determine to be appropriate; and

WHEREAS, the EIC Board has determined that it is in the best interests of the Company, EIC and
their stockholders to assure that the Company will have the continued services of the Executive,
notwithstanding the possibility, threat or occurrence of a change in control of EIC and believes
that it is imperative to diminish the potential distraction of the Executive by virtue of the
personal uncertainties and risks created by a pending or threatened change in control, to assure
the Executive’s full attention and dedication to the Company in the event of any threatened or
pending change in control, and to provide the Executive with appropriate severance arrangements
following a change in control.

NOW, THEREFORE, to assure the Company that it will have the continued undivided attention and
services of the Executive and the availability of the Executive’s advice and counsel
notwithstanding the possibility, threat or occurrence of a change in control of EIC, and to induce
the Executive to remain in the employ of the Company, and for other good and valuable
consideration, the Company and the Executive agree as follows:

1. Change in Control. For purposes of the Agreement a “Change in Control” shall mean:

(a) a merger of EIC with another entity, a consolidation involving EIC, or the sale of all or
substantially all of the assets of EIC to another entity if, in any such case, (i) the holders of
equity securities of EIC immediately prior to such transaction or event do not beneficially own
immediately after such transaction or event equity securities of the resulting entity entitled to
50% or more of the votes then eligible to be cast in the election of directors generally (or
comparable governing body) of the resulting entity in substantially the same proportions that they
owned the equity securities of EIC immediately prior to such transaction or event or (ii) the
persons who were members of the EIC Board immediately prior to such transaction or event shall not
constitute at least a majority of the board of directors of the resulting entity immediately after
such transaction or event;

(b) the dissolution or liquidation of EIC;

(c) when any person or entity, including a “group” as contemplated by Section 13(d)(3) of the
U.S. Securities Exchange Act of 1934, as amended, acquires or gains ownership or control
(including, without limitation, power to vote) of 30% or more of the combined voting power of the
outstanding securities of EIC;

(d) individuals who, as of the day immediately preceding the Effective Date, constitute
members of the EIC Board (the “Incumbent Board”) cease for any reason to constitute at least a
majority of the EIC Board; provided, however, that any individual becoming a director subsequent to
such date whose election, or nomination for election by EIC’s stockholders, was approved by a vote
of at least a majority of the directors then comprising the Incumbent Board shall be considered for
purposes of this definition as though such individual was a member of the Incumbent Board, but
excluding, for these purposes, any such individual whose initial assumption of office as a director
occurs as a result of an actual or threatened election contest with respect to the election or
removal of directors or other actual or threatened solicitation of proxies or consents by or on
behalf of any individual, entity or group other than the EIC Board; or

(e) any other event that a majority of the EIC Board, in its sole discretion, shall determine
constitutes a Change in Control hereunder.

For purposes of the preceding sentence, (A) “resulting entity” in the context of a transaction
or event that is a merger, consolidation or sale of all or substantially all assets shall mean the
surviving entity (or acquiring entity in the case of an asset sale) unless the surviving entity (or
acquiring entity in the case of an asset sale) is a subsidiary of another entity and the holders of
common stock of EIC receive capital stock of such other entity in such transaction or event, in
which event the resulting entity shall be such other entity, and (B) subsequent to the consummation
of a merger or consolidation that does not constitute a Change in Control, the term “EIC” shall
refer to the resulting entity and the term “EIC Board” shall refer to the board of directors (or
comparable governing body) of the resulting entity.

2. Circumstances Triggering Receipt of Termination Benefits.

(a) Subject to Section 2(c), the Company will provide the Executive with the benefits set
forth in Section 4 upon any termination of the Executive’s employment:

(i) by the Company at any time within the first 24 months after a Change in Control;

(ii) by the Executive for “Good Reason” (as defined in Section 2(b) below) at any
time within the first 24 months after a Change in Control; or

(iii) by the Company or the Executive pursuant to Section 2(d).

(b) In the event of a Change in Control, the Executive may terminate employment with the
Company and/or any subsidiary for “Good Reason,” following notice and opportunity for remedy as set
forth herein and in Section 3. For purposes hereof, “Good Reason” shall mean (subject to such
notice and opportunity to remedy) any of the occurrence of any of the following events without the
Executive’s prior written consent:

(i) A material reduction of the Executive’s authorities, duties, or responsibilities
as an executive and/or officer of the Company from those in effect as of ninety (90)
calendar days prior to the Change in Control; provided, however, that any
reduction in the foregoing resulting merely from the acquisition of EIC and its existence
as a subsidiary or division of another entity such as a change in reporting relationship or
title shall not be sufficient to constitute Good Reason;

(ii) The Company’s requiring the Executive to be based at a location in excess of
fifty (50) miles from the location of the Executive’s principal job location or office
immediately prior to the Change in Control; except for required travel on the Company’s
business to an extent substantially consistent with the Executive’s then present business
travel obligations;

(iii) A reduction by the Company of the Executive’s Base Salary and/or target annual
bonus opportunity in effect on the Effective Date hereof, or as the same shall be increased
from time to time;

(iv) The failure of the Company to obtain a satisfactory agreement from any successor
to the Company to assume and agree to perform the Company’s obligations under this
Agreement, as contemplated in Section 7 (where it requires successors to accept this
Agreement) herein; or

(v) A material breach of this Agreement by the Company.

(c) Notwithstanding Sections 2(a) and (b) above, no benefits shall be payable by
reason of this Agreement in the event of:

(i) Termination of the Executive’s employment with the Company and/or its subsidiaries
by reason of the Executive’s death or Disability, provided that the Executive has
not previously given a valid “Notice of Termination” pursuant to Section 3. For purposes
hereof, “Disability” shall mean the Executive’s inability, due to physical or mental
infirmity, to perform the Executive’s material duties and responsibilities to the Company
and its subsidiaries for any period of six consecutive months or for any period of eight
months out of any 12-month period, as determined by a physician selected by the Company or
its insurers and acceptable to the Executive or the Executive’s legal representative (such
agreement as to acceptability not to be withheld unreasonably);

(ii) Termination of the Executive’s employment with the Company and/or its
subsidiaries on account of the Executive’s resignation without Good Reason;

(iii) Termination of the Executive’s employment with the Company and its subsidiaries
for Cause. For the purposes hereof, “Cause” shall mean:

(A) The Executive’s willful failure to substantially perform his duties with the
Company (other than any such failure resulting from the Executive’s Disability), after a
written demand for substantial performance is delivered to the Executive that specifically
identifies the manner in which the Company believes that the Executive has not
substantially performed his duties, and the Executive has failed to remedy the situation
within fifteen (15) business days of such written notice from the Company;

(B) Gross negligence in the performance of the Executive’s duties which results in
material financial harm to the Company or EIC;

(C) The Executive’s conviction of, or plea of guilty to, any crime involving the
personal enrichment of the Executive at the expense of the Company;

(D) The Executive’s willful engagement in conduct that is demonstrably and materially
injurious to the Company or EIC, monetarily or otherwise; or

(E) The Executive’s willful violation of any of the covenants contained in Section 6.

Notwithstanding the foregoing, “Cause” shall not exist unless and until the Company has
delivered to the Executive, along with the Notice of Termination for Cause, a copy of a resolution
duly adopted by three-quarters (3/4) of the entire Board of Directors of the Company (the “Company
Board”) (excluding the Executive if the Executive is a Company Board member) at a meeting of the
Company Board called and held for such purpose (after reasonable notice to the Executive and an
opportunity for the Executive, together with counsel, to be heard before the Company Board),
finding that in the good faith opinion of the Company Board an event (or events) set forth in
clauses (A)-(E) above has occurred and specifying the particulars thereof in detail.

This Section 2(c) shall not preclude the payment of any amounts otherwise payable to the
Executive under any of the Company’s employee benefit plans, stock plans, programs and
arrangements, which payment shall be governed exclusively by the terms thereof.

(d) A termination of the Executive’s employment by the Company without Cause or by the
Executive for an event that would constitute Good Reason following a Change in Control that occurs,
in either event, prior to a Change in Control, but occurs (i) not more than 180 days prior to the
date on which a Change in Control occurs and (ii) (x) at the request of a third party who has
indicated an intention or taken steps reasonably calculated to effect a Change in Control or (y)
otherwise arose in connection with, or in anticipation of, a Change in Control, shall be deemed to
be a termination or removal of the Executive without Cause within the first 24 months after a
Change in Control for purposes of this Agreement and the date of such Change in Control shall be
deemed to be the date immediately preceding the date the Executive’s employment terminates.

3. Notice of Termination; Termination Date. Notwithstanding any other requirement to
provide notice of termination of employment under any contract of employment, any termination of
the Executive’s employment with the Company and its subsidiaries as contemplated by Section 2 shall
be communicated by written “Notice of Termination” to the other party hereto. Any “Notice of
Termination” shall indicate the effective date of termination, which, shall be more than 60 days
after the date the Notice of Termination is delivered (the “Termination Date”), the specific
provision in this Agreement relied upon, and, except for a termination pursuant to Section 2(d),
will set forth in reasonable detail the facts and circumstances claimed to provide a basis for such
termination including, if applicable. Executive must provide the Notice of Termination to the
Company within 90 days of the events constituting “Good Reason” for termination and the Company
shall have a period of 30 days after the Notice of Termination during which the Company may remedy
the condition before such termination shall be effective. In the event the Company effects a
remedy within such 30-day period and the Executive does not rescind the Notice of Termination upon
being notified of such remedy, the termination benefits described in Section 4 hereof shall not be
payable with respect to such termination.

4. Termination Benefits. Subject to the conditions set forth in Section 2(a) and contingent
upon the Executive’s executing (and not revoking) the “Release” (as defined below), the following
post-termination payments or benefits shall be paid or provided to the Executive following the
Executive’s termination of employment:

(a) Severance Payment. The Company shall pay to the Executive, as a severance
payment, an amount equal to the sum of (i) two times (A) the Executive’s “Base Pay”, which shall be
an amount equal to the greater of (x) the Executive’s rate of annual base salary (prior to any
deferrals) at the Termination Date or (y) the Executive’s rate of annual base salary (prior to any
deferrals) immediately prior to the Change in Control, and (B) the Executive’s “Incentive Pay”,
which shall be an amount equal to the average annual bonus earned by the Executive under the
Company’s incentive compensation plan or any other annual bonus plan (whether paid currently or on
a deferred basis) during the three fiscal years of the Company immediately preceding the fiscal
year of the Company in which the Change in Control occurred plus (ii) a pro rata portion of the
Executive’s target bonus for the fiscal year in which the Termination Date occurs, which payment
shall be made in a single lump sum within 15 days following the date on which the Executive returns
to the Company an executed copy of the Release.

(b) Release. The Company’s obligation to make the payment and provide the benefits
described in this Section 4 are conditioned expressly on the Executive’s executing a settlement
agreement containing a general release and waiver of claims against the Company (as “Company” is
defined in Section 7), EIC and their respective subsidiaries, parents (and any subsidiaries of any
parents), and affiliates and any of their members, partners, officers, directors, agents, advisors,
attorneys, contractors, consultants and employees, in a form reasonably satisfactory to the Company
(the “Release”), and such Release being executed by the Executive within 60 days following the
Termination Date (such date, the “Release Deadline”). The Company will provide the Release to the
Executive within seven days following the Termination Date. If the Release has not been executed
by the Executive and returned to the Company (together with an independent adviser’s certificate)
prior to the Release Deadline, the Executive shall not be entitled to receipt of any payments or
benefits pursuant to this Agreement.

5. No Mitigation Obligation; Obligations Absolute. The payment of the severance compensation
by the Company to the Executive in accordance with the terms of this Agreement is hereby
acknowledged by the Company to be reasonable, and the Executive will not be required to mitigate
the amount of any payment or other benefit provided in this Agreement by seeking other employment
or otherwise, nor will any profits, income, earnings or other benefits from any source whatsoever
create any mitigation, offset, reduction or any other obligation on the part of the Executive
hereunder or otherwise, except as expressly provided in Section 11 hereof. The obligations of the
Company to make the payments and provide the benefits provided herein to the Executive are absolute
and unconditional (except as provided herein) and may not be reduced under any circumstances,
including without limitation any set-off, counterclaim, recoupment, defense or other right which
the Company may have against the Executive or any third party at any time.

6. Continuing Obligations.

(a) Confidentiality. The Executive shall hold in a fiduciary capacity for the benefit
of the Company all secret or confidential information, knowledge or data relating to the Company,
EIC or any of their affiliated companies, and their respective businesses, which shall have been
obtained by the Executive during the Executive’s employment by the Company and which shall not be
or become public knowledge (information that has become public knowledge shall not include any
information that has entered the public domain as a result of acts or omissions by the Executive or
representatives of the Executive in violation of this Agreement). After termination of the
Executive’s employment with the Company and its subsidiaries for any reason, the Executive shall
not, without the prior written consent of the Company or as may otherwise be required by law or
legal process, communicate or divulge any such information, knowledge or data to anyone other than
the Company and those designated by it.

(b) Non-Solicitation. During the term of this Agreement and for a period of twelve
(12) months after the Termination Date, the Executive shall not, directly or indirectly, employ or
retain or solicit for employment or arrange to have any other person, firm, or other entity employ
or retain or solicit for employment or otherwise participate in the employment or retention of any
person who is an employee or consultant of EIC, the Company or any of their subsidiaries with whom
the Executive has had direct and substantial contact at any time during the twelve (12) month
period prior to the Termination Date and who, in the case of any employee of EIC, the
Company or any of their subsidiaries, is in an executive or management position.

(c) Cooperation. Executive agrees to cooperate with the Company, EIC and their
attorneys in connection with any and all lawsuits, claims, investigations, or similar proceedings
that have been or could be asserted at any time arising out of or related in any way to Executive’s
employment by the Company or any of its subsidiaries.

(d) Non-Disparagement. At all times following the Termination Date, the Executive
agrees not to disparage the Company, EIC or any of their directors or executive officers, or
otherwise make comments harmful to the Company’s or EIC’s business or reputation

(e) Blue Penciling. It is expressly understood and agreed that although the
Executive and the Company consider the restrictions contained in Sections 6(a) through (d) to be
reasonable, if a judicial determination is made by a court of competent jurisdiction that the time
or territory or any other restriction contained in this Agreement is an unenforceable restriction
against the Executive, the provisions of this Agreement shall not be rendered void but shall be
deemed amended to apply as to such maximum time and territory and to such maximum extent as such
court may judicially determine or indicate to be enforceable. Alternatively, if any court of
competent jurisdiction finds that any restriction contained in this Agreement is unenforceable, and
such restriction cannot be amended so as to make it enforceable, such finding shall not affect the
enforceability of any of the other restrictions contained herein.

(f) Other Obligations. The obligations set out above are in addition to any
obligations owed by the Executive to the Company, EIC or any of their affiliates under any other
agreement, including without limitation any contract of employment.

7. Successors.

(a) The Company shall require any successor (whether direct or indirect, by purchase, merger,
consolidation or otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance reasonably satisfactory to the Executive to expressly
assume and agree to perform this Agreement in the same manner and to the same extent that the
Company would be required to perform it if no such succession had taken place. Failure of such
successor entity to enter into such agreement prior to the effective date of any such succession
(or, if later, within three business days after first receiving a written request for such
agreement) shall constitute a breach of this Agreement and shall entitle the Executive to terminate
employment pursuant to Section 2(a)(ii) and to receive the payments and benefits provided under
Section 4. As used in this Agreement, “Company” shall mean the Company as herein before defined and
any successor to its business and/or assets as aforesaid which executes and delivers the Agreement
provided for in this Section 7 or which otherwise becomes bound by all the terms and provisions of
this Agreement by operation of law.

(b) This Agreement shall inure to the benefit of and be enforceable by the Executive’s
personal or legal representatives, executors, administrators, successors, heirs, distributees,
devisees and legatees. If the Executive dies while any amounts are payable to him hereunder, all
such amounts, unless otherwise provided herein, shall be paid in accordance with the terms of this
Agreement to the Executive’s designee or, if there is no such designee, to the Executive’s estate.

8. Notices. For all purposes of this Agreement, all communications, including without
limitation notices, consents, requests or approvals, required or permitted to be given hereunder
will be in writing and will be deemed to have been duly given when hand delivered or dispatched by
electronic facsimile transmission (with receipt thereof orally confirmed), or five business days
after having been mailed by United Kingdom first class mail, or three business days after having
been sent by a nationally recognized overnight courier service such as FedEx, UPS, or DHL,
addressed to the Company (to the attention of the Secretary of the Company, with a copy to the
General Counsel of EIC) at its principal executive office and to the Executive at the Executive’s
principal residence, or to such other address as any party may have furnished to the other in
writing and in accordance herewith, except that notices of changes of address shall be effective
only upon receipt.

9. Governing Law. The validity, interpretation, construction and performance of this
agreement shall be governed by the laws of England, without regard to conflicts of law principles.
The parties irrevocably agree that the courts of England shall have non-exclusive jurisdiction to
settle any dispute or claim that arises out of or in connection with this Agreement or its subject
matter or formation.

10. Miscellaneous. No provisions of this Agreement may be modified, waived or discharged
unless such waiver, modification or discharge is agreed to in a writing signed by the Executive and
the Company. No waiver by either party hereto at any time of any breach by the other party hereto
of, or compliance with, any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions at the same or any
prior or subsequent time. No agreements or representations, oral or otherwise, express or implied,
with respect to the subject matter hereof have been made by either party which are not set forth
expressly in this Agreement (or in any employment or other written agreement relating to the
Executive). Nothing expressed or implied in this Agreement will create any right or duty on the
part of the Company or the Executive to have the Executive remain in the employment of the Company
or any subsidiary prior to or following any Change in Control. The Company may withhold from any
amounts payable under this Agreement all taxes and other deductions as the Company is required to
withhold pursuant to any law or government regulation or ruling. In the event that the Company
refuses or otherwise fails to make a payment when due and it is ultimately decided that the
Executive is entitled to such payment, such payment shall be increased to reflect an interest
factor, compounded annually, equal to the prime rate in effect as of the date the payment was first
due plus two points. For this purpose, the prime rate shall be based on the rate identified by
Chase Manhattan Bank as its prime rate.

All headings and section references used herein are for convenience only and do not constitute
a part of this Agreement. Where specific language is used to clarify by example a general
statement contained herein, such specified language shall not be deemed to modify, limit or
restrict in any manner the construction of the general statement to which it relies. The language
used in this Agreement is deemed to be the language chosen by the parties hereto to express their
mutual intent, and no rule of strict construction shall be applied against any such party.

11. Reduction for Other Severance. Any payments or other benefits provided to the
Executive under this Agreement shall be offset or reduced by any payment in lieu of notice,
redundancy pay, or other payments or other benefits provided under any severance plan or employment
agreement which the Executive is eligible to receive (or has received) as a result of the
termination of the Executive’s employment.

12. Separability. The invalidity or unenforceability of any provisions of this Agreement
shall not affect the validity or enforceability of any other provision of this Agreement, which
shall remain in full force and effect.

13. Non-assignability. This Agreement is personal in nature and neither of the parties
hereto shall, without the consent of the other, assign or transfer this Agreement or any rights or
obligations hereunder, except as provided in Section 7. Without limiting the foregoing, the
Executive’s right to receive payments hereunder shall not be assignable or transferable, whether by
pledge, creation of a security interest or otherwise, other than a transfer by will or by the laws
of descent or distribution, and in the event of any attempted assignment or transfer by the
Executive contrary to this Section 13 the Company shall have no liability to pay any amount so
attempted to be assigned or transferred to any person other than the Executive or, in the event of
death, the Executive’s designated beneficiary or, in the absence of an effective beneficiary
designation, the Executive’s estate.

14. Effectiveness; Term. This Agreement will be effective and binding as of the date first
above written immediately upon its execution and shall continue in effect through the second
anniversary of such date; provided, however, that the term of this Agreement shall
automatically be extended for an additional day for each day that passes so that there shall at any
time be two years remaining in the term unless the Company provides written notice to the Executive
that it does not wish the term of this Agreement to continue to be so extended, in which case the
Agreement shall terminate on the second anniversary of such notice if there has not been a Change
in Control prior to such second anniversary. In the event that a Change in Control has occurred
during the term of this Agreement, then this Agreement shall continue to be effective until the
second anniversary of such Change in Control. Notwithstanding any other provision of this
Agreement, if, prior to a Change in Control, the Executive ceases for any reason to be an employee
of the Company and any subsidiary (other than a termination of employment pursuant to Section 2(d)
hereof), thereupon without further action the term of this Agreement shall be deemed to have
expired and this Agreement will immediately terminate and be of no further effect. For purposes of
this Section 14, the Executive shall not be deemed to have ceased to be an employee of the Company
and any subsidiary by reason of the transfer of the Executive’s employment between the Company and
any subsidiary, or among any subsidiaries. Notwithstanding any provision of this Agreement to the
contrary, the parties’ respective rights and obligations under Sections 4 through 7 will survive
any termination or expiration of this Agreement or the termination of the Executive’s employment
following a Change in Control for any reason whatsoever.

16. Counterparts. This Agreement may be executed in one or more counterparts, each of which
shall be deemed to be an original but all of which together will constitute one and the same
agreement.

[SIGNATURE PAGE FOLLOWS]

1

IN WITNESS WHEREOF, the parties have caused this Agreement to be executed and delivered as of
the day and year first above set forth.

Endeavour Energy UK Limited

By: /s/Cathy Stubbs      

Printed Name: Cathy Stubbs

Title: Director

Executive

By: /s/Derek Neilson      

Printed Name: Derek Neilson

Title: Managing Director, U.K. Operations

2EX-10.2

Exhibit 10.2

September 19, 2014

James Emme

568 S. Williams St.

Denver CO 80209

Re: Key Employee Retention Plan

Dear James:

In recognition of your continuing key role at Endeavour Operating Corporation
(“Endeavour”), you shall be entitled to certain bonuses upon the terms and conditions set
forth in this letter (“Agreement”). This Agreement is between you and Endeavour’s
affiliate, Endeavour Energy UK Limited (the “Company”).

Terms and Conditions

The Company agrees to make the following payments, in addition to your normal salary and benefits,
to you, subject to the terms and conditions in this Agreement and execution and delivery of this
Agreement to Endeavour by September 19, 2014 (the “Delivery Date”):

	 	1.	 	Commitment Amount: If you agree to continue your employment with Endeavour and
not resign, and your employment with Endeavour is not terminated for “Cause” (as
hereinafter defined), before the earlier of (i) the “Transaction Date” (as defined below)
or (ii) September 26, 2015, you shall be entitled to the “Commitment Amount” set
forth on the attached Schedule A. Provided you return a fully executed copy of
this Agreement by the Delivery Date, the Commitment Amount will be advanced to you on
September 26, 2014. However, if you resign your employment, or are terminated with Cause,
prior to the earlier of the Transaction Date or September 26, 2015, you agree that, within
ten (10) calendar days, you will pay to the Company the full amount of the Commitment
Amount you received (i.e., the net amount of the Commitment Amount after reduction by all
amounts withheld therefrom). You agree that the Company may recover such payment (or any
part therefrom) from you by making deductions from your salary and/or any other sums owed
to you by Endeavour or the Company, subject to applicable law.

	 	2.	 	Retention Bonus: If you remain an employee of Endeavour and do not resign, and
your employment with Endeavour is not terminated for Cause, before the “Transaction Date”
(as defined below) then you shall be paid the “Retention Bonus” in the amount set
forth on the attached Schedule A. Payment of the Retention Bonus shall be made
within fifteen (15) calendar days following the Transaction Date. In the event that prior
to the Transaction Date your employment with Endeavour is terminated without “Cause” (as
defined below), or by reason of death or permanent disability (under the long-term
disability policy of Endeavour), you shall also be entitled to the Retention Bonus, payable
on the date that is thirty (30) calendar days following your termination date. Payment of
a Retention Bonus on account of a termination without Cause shall be contingent on your
executing and not revoking an agreement, in a form provided by the Company, granting a full
release of all actual and potential claims you have or may have against Endeavour, the
Company, or any of their affiliates (the “Release”), which shall be provided on
your termination date.

	 	3.	 	Amount of Payments. The amount of the Commitment Amount and Retention Bonus
(together, the “Payments”) are set forth on the Attached Schedule A. The
Payments shall not be taken into account for purposes of any other compensation or benefit
program of Endeavour, except your elective deferrals under any 401(k) plan.

	 	4.	 	Definitions. For purposes of this Agreement, the following terms shall have
the meanings set forth below:

“Transaction Date” means: the date of the earlier to occur of: (i) the closing
date of any out of court agreement for the restructuring of Endeavour’s balance sheet,
(ii) the effective date of a confirmed plan of reorganization under chapter 11 of title
11 of the United States Code (the “Bankruptcy Code”) providing for the
restructuring of Endeavour’s balance sheet, (iii) the closing date of a sale of all or
substantially all of the assets or a majority of the outstanding stock of Endeavour in
one or more transactions under section 363 of the Bankruptcy Code or pursuant to a
confirmed chapter 11 plan, and (iv) the date of the entry of an order of a United States
Bankruptcy Court ordering the conversion of Endeavour’s chapter 11 case to a case under
chapter 7 of the Bankruptcy Code.

“Cause” means any act or omission by you which constitutes: (i) fraud,
embezzlement or material, willful misconduct; (ii) any indictment for, conviction of or
entry of a plea of nolo contendere to any felony; (iii) illegal possession or use of any
drug or narcotic, (iv) any violation of the Endeavour Code of Business Conduct, (v) your
willful failure or refusal to perform your duties or responsibilities after written
notice of and your failure to reasonably correct within 30 days following such notice
and thereafter (other than by reason of your disability) such failure or refusal, or
(vi) any other reason entitling Endeavour to dismiss you lawfully and summarily. Any
determination of Cause shall be reasonably made by the management of Endeavour and shall
be binding on you and your successors and assigns.

	 	5.	 	Forfeiture of Rights. Because your continued performance of services is an
important reason for the Payments, your rights to such Payments may be forfeited under
certain circumstances described below.

	 	a.	 	Commitment Amount: As provided above, your
rights to retain the Commitment Amount will be forfeited if you resign or
are terminated with Cause from your employment before the earlier of the
Transaction Date or September 26, 2015. Thus, you will not forfeit your
rights to retain the Commitment Amount if you die, become permanently
disabled (under the long-term disability policy of Endeavour) or are
terminated without Cause before the earlier of Transaction Date or
September 26, 2015.

	 	b.	 	Retention Bonus: As provided above, your rights
to receive payment of the Retention Bonus will be forfeited upon the
termination of your employment prior to the Transaction Date for any
reason, unless such termination is without Cause, death or permanent
disability.

	 	6.	 	Section 409A. The Payments are intended to be exempt from the application of
section 409A of the Internal Revenue Code by reason of qualifying for the short-term
deferral payment exemption, and this Agreement shall be construed to the fullest extent to
avoid the application of 409A.

You may not assign your rights under this Agreement except upon your death. The Company may assign
its obligations hereunder to any successor (including any acquirer of substantially all of the
assets of the Company).

This Agreement sets forth the entire understanding of the Company and you regarding any retention
or incentive bonus, and may be changed only by a written agreement signed by you and the Company.

This Agreement is governed by and to be construed in accordance with the laws of the State of
Texas, without regard to conflicts of laws principles thereof.

Notwithstanding any of the above, you remain an “at will” employee of Endeavour.

This Agreement may be executed in two or more counterparts, and by the different parties in
separate counterparts, each of which when executed shall be deemed to be an original but all of
which taken together shall constitute one and the same agreement. Delivery of an executed
counterpart of a signature page to this Agreement electronically (including portable document
format (pdf.)) or by facsimile shall be as effective as delivery of a manually executed counterpart
of this Agreement.

To accept this Agreement, please sign where indicated below, and return on or before Friday,
September 19, 2014 in a confidential envelope to Julie Ferro, 811 Main, Suite 2100, Houston, Texas
77002, via confidential facsimile at 713-583-3651 or to julie.ferro@endeavourcorp.com.

Sincerely

ENDEAVOUR ENERGY UK LIMITED

/s/Cathy Stubbs 

By: Cathy Stubbs

Title: Director

ACCEPTED AND AGREED AS OF THE

DATE FIRST SET FORTH ABOVE:

/s/James Emme 

By: James Emme

1

Schedule A

Commitment Amount: $237,500

Retention Bonus: $237,500

2

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