Exhibit 10.1

EMPLOYMENT AGREEMENT

This Agreement is made this 3rd day of January, 2011, by and between Fiserv, Inc., on behalf of itself and its subsidiaries and affiliates (“Company”), and Mark A. Ernst (“Employee”).

WHEREAS, the Company wishes to assure itself of the services of Employee for the period provided for in this Agreement;

WHEREAS the Employee desires to enter into an agreement to provide for his employment with the Company upon the terms provided in this Agreement;

WHEREAS the Company’s information, including but not limited to its technology, products, intellectual property, customer lists, customer information, and its methods of doing business have been developed by the Company at considerable expense over a number of years, and are of considerable economic value to the Company;

WHEREAS Company wishes to assure itself that Employee will keep in confidence and not disclose any information disclosed to him by the Company during the term that he is employed by Company;

WHEREAS Company further wishes to assure itself that Employee will not compete with the Company during or for a reasonable period of time after the termination of his employment; and

WHEREAS Employee is willing to agree not to so compete with Company;

NOW, THEREFORE, in consideration of the premises set forth herein and intending to be legally bound, the parties hereto agree as follows:

1. The Company agrees to employ Employee, and Employee agrees to be employed by the Company. During his employment, Employee agrees to serve as executive vice president and chief operating officer with such further responsibilities and duties commensurate with such position as contemplated by the Company’s by-laws and reasonably implemented by the Board of Directors and Employee’s Direct Supervisor (as hereinafter defined) subject to the further terms and conditions of this Agreement.

2. Within 12 months of the commencement of the Employment Term as set forth in Section 4 below (“Relocation Date”), at the request of the Company, Employee agrees to relocate to the Milwaukee, Wisconsin area and to work at the Company’s offices in Brookfield, Wisconsin. Prior to the Relocation Date, Employee will conduct his duties from Kansas City, MO or travel to the Company’s offices at Brookfield, Wisconsin, Norcross Georgia, or any of its other locations, from time to time as needed at the Company’s expense. The Company will pay Employee’s relocation expenses in accordance with its standard executive relocation reimbursement program, if Employee relocates during

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the Employment Term (as defined herein), regardless of whether Employee relocates his residence before or after the Relocation Date, subject, however, to the provisions of Section 8(c)(iv). If the Company terminates Employee for cause, as defined in Section 8(c), or Employee voluntarily ceases his employment, with the Company, in either case, on or before the second anniversary of the date of the commencement of employment hereunder, Employee shall not be entitled to any portion of any further relocation assistance and shall be obligated to repay the Company all of the relocation expenses paid to him or on his behalf by the Company prior to the date of the termination of employment. If Employee fails to repay such amount to the Company by this last day of employment, the Company shall have the right to offset such repayment amount from any other amounts the Company owes to the Executive.

3. Employee agrees to accumulate stock ownership in the Company at a minimum level of four times the value of his salary, no later than the fifth anniversary of the date hereof and meet annual minimums as disclosed in the company executive stock ownership requirements.

4. The term of this Agreement shall begin on the date first written above and shall continue until 12 months after termination of Employee’s employment (the “Term”). Employee’s employment shall begin on January 3, 2011 and shall continue until terminated by either party upon written notice to the other party (the “Employment Term”).

5. Employee hereby represents that he is free and able to enter into this Agreement with Company and that there is no reason, known or unknown, which will prevent his performance of the terms and conditions contained in this Agreement.

6. During the Employment Term, Employee shall devote his full business time, best efforts and business judgment, faithfully, conscientiously and to the best of his ability to the advancement of the interests of the Company and to the discharge of the responsibilities and offices held by him. Employee shall not engage in any other business activity, whether or not pursued for pecuniary advantage, except as may be approved in advance by the Company, provided, however, that the foregoing shall not prohibit or limit Employee from participating in civic, charitable or other not-for-profit activities or to manage personal passive investments, provided that such activities do not materially interfere with Employee’s services required under this Agreement and do not violate the Code of Conduct or other corporate policies of Fiserv. Employee hereby acknowledges that he has read Fiserv’s Code of Conduct in effect as of the date hereof, attached hereto as Exhibit A, and agrees that he will comply with such Code of Conduct and other Fiserv corporate policies regarding activities in the workplace, as they may be amended from time to time, in all material respects.

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7. For all services to be rendered by Employee in any capacity during the Employment Term, the Company shall pay or cause to be paid to Employee and shall provide or cause to be provided to him the following:

(a) An annual base salary at a minimum rate of $525,000 per year, commencing on the date on which Employee begins employment with the Company (the “Employment Date”), payable in accordance with the normal payroll practices and schedule of the Company. Upon the expiration of the Term and thereafter, the Employee’s direct supervisor (“Direct Supervisor”) will determine Employee’s annual base salary, it being understood by Employee that adjustments to annual base salary will be for unusual events and will not typically be made each year. To that end, beginning in February 2012, Employee’s Direct Supervisor will review annually the performance of Employee. The term “annual base salary” shall not include any payment or other benefit that is denominated as or is in the nature of a bonus, incentive payment, commission, profit-sharing payment, retirement or pension accrual, insurance benefit, other fringe benefit or expense allowance, whether or not taxable to Employee as income.

(b) In addition to the salary provided above, as of the Employment Date and thereafter, Employee shall be entitled to participate in the Management Bonus Plan or other incentive compensation program, as offered by the Company from time to time for senior executives of the Company. For calendar year 2011, Employee will have a target bonus of 80% of annual base salary as of the effective date of this Agreement ($420,000) with an opportunity to achieve a maximum bonus of 160% of such annual base salary ($840,000). For calendar year 2011, the bonus payout will be prorated for the number of days that Employee is employed during 2011, to be paid no later than March 15, 2012, according to the Company’s usual practice.

(c) The Employee has received and shall receive equity in the Company (each a “Stock Program”) as follows:

(i) As of the date of the Employment Date, Fiserv shall grant to Employee pursuant to the terms of the Fiserv, Inc. 2007 Omnibus Incentive Plan (the “Stock Option and Restricted Stock Plan”), an option to purchase [estimated number based on a $1 million face amount] 47,800 shares of Common Stock, $.01 par value, of Fiserv (“Fiserv Common Stock”). The exercise price of such options shall equal the fair market value of Fiserv Common Stock as determined under the terms of the Stock Option and Restricted Stock Plan on the Employment Date. Such options shall vest over a four- year period, with 1/3 of such options vesting on each of the second, third and fourth anniversary dates of the date of grant.

(ii) As of the Employment Date, Employee shall thereafter be eligible to participate annually during the Employment Term in the Fiserv Senior Managers and Senior Professionals Stock Option and Restricted Stock Program with an annual target of 200% of base compensation, but will vary from year to year. Nevertheless, options and restricted stock granted thereunder may be subject to participation levels and vesting schedules not commensurate with Employee’s position and may be determined in

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connection with Employee’s annual performance evaluation. If Employee shall not be employed by the Company on the date of grant of any options or restricted stock hereunder, Employee shall not be entitled to any portion of any such options or restricted stock award. Notwithstanding anything to the contrary, all awards of options or restricted stock are subject to the approval of the Company’s Board of Directors or its designated committee and vesting of such equity awards will follow normal guidelines for similarly situated executives of the Company, established by the Board of Directors of the Company at the time.

All stock options or restricted stock granted or issued hereafter will be subject to the terms of the Stock Option and Restricted Stock Plan as it may be amended from time to time and of the specific stock option or restricted stock agreement pursuant to which any such stock options or restricted stock may be granted or issued from time to time. The terms of the specific stock option or restricted stock agreement pursuant to which stock options or restricted stock may be granted or issued hereunder shall govern treatment of such stock options or restricted stock in the event of the death or disability (as defined in any such agreement) of Employee. Such options will also have vesting and other terms as specified in the agreement covering such stock options or restricted stock, which may be different than other employees of the Company.

(d) In addition to the salary and incentive compensation provided above, Employee shall be entitled to participate in any employee benefit plans, welfare benefit plans, retirement plans, and other fringe benefit plans from time to time in effect for senior executives of the Company generally; provided, however, that such right of participation in any such plans and the degree or amount thereof shall be subject to the terms of the applicable plan documents, generally applicable Fiserv policies and to action by the Board of Directors of Fiserv or any administrative or other committee provided in or contemplated by such plan, it being mutually agreed that this Agreement is not intended to impair the right of any committee or other group or person concerned with the administration of such plans to exercise in good faith the full discretion reposed in them by such plans.

(e) All compensation or other benefits payable or owing to Employee hereunder shall be subject to withholding taxes and other legally required deductions pursuant to federal, state or local law.

8. During the Term, Employee’s employment hereunder shall terminate under the following circumstances:

(a) In the event Employee dies, this Agreement and the Company’s obligations under this Agreement shall terminate as of the end of the month during which his death occurs.

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(b) If Employee, due to physical or mental illness, becomes so disabled as to be unable to perform substantially all of his duties, Employee’s employment will terminate according to the benefit plans and policies of the Company and this Agreement and the Company’s obligations under this Agreement shall terminate on the date of such termination of employment.

(c) Employee’s employment may be terminated for cause, effective immediately upon written notice to Employee by the Company that shall set forth the specific nature of the reasons for termination. Only the following acts or omissions by Employee shall constitute “cause” for termination:

(i) dishonesty or similar serious misconduct, directly related to the performance of Employee’s duties and responsibilities hereunder, which results from a willful act or omission and which is injurious to the operations, financial condition or business reputation of the Company;

(ii) Employee being named as a defendant in any criminal proceedings, and as a result of being named as a defendant, the operations, financial condition or reputation of the Company are materially injured or Employee is convicted of a crime;

(iii) Employee’s drug or alcohol use in violation of any Company policy or which materially impairs the performance of his duties and responsibilities as set forth herein;

(iv) in the sole discretion of the chief executive officer of the Company, failure by Employee to relocate his residence to the Brookfield, Wisconsin by the Relocation Date;

(v) substantial, continuing willful and unreasonable inattention to, neglect of or refusal by Employee to perform Employee’s duties or responsibilities under this Agreement;

(vi) willful and intentional violation of a material provision of the Fiserv Code of Conduct, as it may be amended from time to time, or other Fiserv corporate policies regarding activities in the workplace in effect at the time; or

(vii) any other willful or intentional breach or breaches of this Agreement by Employee, which breaches are. singularly or in the aggregate, not cured within 30 days of written notice of such breach or breaches to Employee from the Company.

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(d) Employee’s employment may be terminated by the Employee by written notice to the Company and Employee’s Direct Supervisor for Good Reason. For purposes of this Agreement “Good Reason” shall mean the occurrence at any time of any of the following without the Employee’s prior written consent:

(i) any breach by the Company of any of the provisions of this Agreement, other than an insubstantial and inadvertent failure not occurring in bad faith that the Company remedies promptly after receipt of notice thereof given by the Employee;

(ii) a good faith determination by the Employee that there has been a material adverse change, without the Employee’s written consent, in the Employee’s working conditions or status with the Company, including but not limited to a significant change in the nature or scope of the Employee’s authority, powers, functions, duties or responsibilities as contemplated by Section 1, that the Company does not remedy within thirty (30) days after receipt of notice thereof given by the Employee;

(iii) the failure by the Company to obtain an agreement from any successor to the Company to assume this Agreement;

provided, however, that the Company shall have been given notice at least 30 days in advance of the anticipated termination date and an opportunity to cure any such event of Good Reason. In the event of termination pursuant to this subsection (d), Employee shall be entitled to receive termination benefits in accordance with subsection (f) below. If Employee terminates his employment for reasons other than those enumerated in this subsection (d), he shall not be entitled to termination benefits described in subsection (f) below.

(e) Employee’s employment may be terminated at the election of the Company upon written notice to Employee by the Company at any time for the convenience of the Company.

(f) If Employee’s employment is terminated by the Company for any reason other than as specified in subsection (a), (b) or (c) above or if terminated by Employee pursuant to subsection (d) above, subject to execution by Employee, within 45 days of termination of employment, of a general release in favor of the Company (and failure to revoke such release), Employee shall be entitled to receive a sum equal to 1.8 times the then current annual base salary. Any payment under this subsection (f) shall be paid in a cash equivalent lump sum on the first day of the seventh month following the month in which the Employee’s Separation from Service occurs, without interest thereon; provided that, if on the date of Employee’s Separation from Service, neither the Company nor any other entity that is considered a “service recipient” with respect to Employee within the meaning of Code Section 409A has any stock which is publicly traded on an established securities market (within the meaning of the Treasury Regulation Section 1.897-1(m)) or

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otherwise, then such payment shall be paid to Employee in a cash equivalent lump sum within ten business days of the date on which the Employee signs and does not revoke a general release in favor of the Company. For purposes hereof, the term “Separation from Service” shall have the same meaning as ascribed to such term in Employee’s Key Executive Employment and Severance Agreement with the Company. All other incentive compensation and benefits being received by Employee shall cease upon termination of employment, subject to applicable law.

9. The Employee Confidential Information and Development Agreement of the Company, attached hereto as Exhibit B, is hereby incorporated herein by reference. Employee hereby confirms that he is bound by its terms. Such confidential information is understood to include, without limitation, products, technology, intellectual property, customer lists, prospect lists and price lists, or any part of such items, and any information relating to Company’s method and technique used in servicing its customers.

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(i) Contact any Customer for the purpose of soliciting or inducing such client to purchase a Competing Product or Service;

(ii) Solicit an employee of the Company to terminate his employment with the Company;

(iii) Become financially interested in, be employed by or have any connection with, directly or indirectly, either individually or as owner, partner, agent, employee, consultant, creditor or otherwise, except for the account of or on behalf of the Company, or its affiliates, in any business or activity listed on Exhibit C, or any affiliate, successor or assign of such business or activity or any other business enterprise that engages in substantial competition with the Company or any of its subsidiaries in the business of providing management solutions to the financial industry; provided, however, that nothing in this Agreement shall prohibit Employee from owning publicly traded stock or other securities of a competitor amounting to less than one percent of such outstanding class of securities of such competitor; or

(iv) Become an owner, partner, director or officer of a company that develops, sells or markets a Competing Product or Service.

(i) Shall not bar Employee from all employment. Employee warrants and agrees that there are ample employment opportunities that he could fill following his employment with the Company, in his field of experience, without violating this Agreement;

(ii) Shall not bar Employee from performing clerical, menial or manual labor;

(iii) Subject to Section 10(b)(iii), including the proviso thereof, shall not prohibit Employee from investing as a passive investor in the capital stock or other securities of a publicly traded corporation listed on a national security exchange.

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11. Employee acknowledges and agrees that compliance with Section 10 hereof is necessary to protect the Company, and that a breach of Section 10 hereof will result in irreparable and continuing damage to the Company for which there will be no adequate remedy at law. Employee hereby agrees that in the event of any such breach of Section 10 hereof, the Company, and its successors and assigns, shall be entitled to injunctive relief and to such other and further relief as is proper under the circumstances. Employee further agrees that, in the event of his breach of Section 10 hereof, the Company shall be entitled to recover the value of any amounts previously paid or payable to Employee pursuant to Section 7(d) hereof and of any Stock Program. Employee understands and agrees that the losses incurred by the Company as a result of such breach of this Agreement would be difficult or impossible to calculate, as they are based on, among other things, the value of the knowledge and information gained by the Employee at the expense of the Company, but that the actual value exceeds the amounts paid or payable to Employee pursuant to Section 7(d) and any Stock Program. Accordingly, the amount paid or payable to Employee pursuant to Section 7(d) and any Stock Program herein represents the Employee’s agreement to pay and the Company’s agreement to accept as liquidated damages, and not as a penalty, such amount for any such Employee breach. Employee and the Company hereby agree to submit themselves to the jurisdiction of any Court of competent jurisdiction in any disputes that arise under this Agreement.

12. Employee agrees that the terms of this Agreement shall survive the termination of his employment with the Company.

13. This Agreement shall be governed by and construed in accordance with the laws in the State of Wisconsin, without reference to conflict of law principles thereof.

14. The language used in this Agreement will be deemed to be the language chosen by the parties to express their mutual intent. In the event an ambiguity or question of intent or interpretation arises, this Agreement will be construed as if drafted jointly by the parties and no presumption or burden of proof will arise favoring or disfavoring any party by virtue of the authorship of any provisions of this Agreement.

15. THE EMPLOYEE HAS READ THIS AGREEMENT AND AGREES THAT THE CONSIDERATION PROVIDED BY THE COMPANY IS FAIR AND REASONABLE AND FURTHER AGREES THAT GIVEN THE IMPORTANCE TO THE COMPANY OF ITS CONFIDENTIAL AND PROPRIETARY INFORMATION, THE POST-EMPLOYMENT RESTRICTIONS ON THE EMPLOYEE’S ACTIVITIES ARE LIKEWISE FAIR AND REASONABLE.

16. If any provision of this Agreement shall be declared illegal or unenforceable by a final judgment of a court of competent jurisdiction, the remainder of this Agreement, or the application of such provision in circumstances other than those as to which it is so declared illegal or unenforceable, shall not be affected thereby, and each remaining provision of this Agreement shall be valid and be enforceable to the fullest extent permitted by law.

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17. No term or condition of this Agreement shall be deemed to have been waived, nor shall thereby create any estoppel against the enforcement of any provision of this Agreement, except by written instrument of the party charged with such waiver or estoppel. No such written waiver shall be deemed a continuing waiver unless specifically stated therein, and each such waiver shall operate only as to the specific term or condition for the future or as to any act other than that specifically waived.

18. No term or provision or the duration of this Agreement shall be altered, varied or contradicted except by a writing to that effect, executed by authorized officers of the Company and the Company and by Employee, and in compliance with Internal Revenue Code Section 409A.

IN WITNESS WHEREOF, the undersigned have hereunto set their hands.

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