<PAGE>

                                                                   EXHIBIT 10.13

                                GOAMERICA, INC.

                         EMPLOYEE STOCK PURCHASE PLAN

                                I.  DEFINITIONS
                                ---------------

     Account means the Employee Stock Purchase Plan Account established for a
     -------
Participant under Section IX hereunder.

     Board of Directors shall mean the Board of Directors of the Company.
     ------------------

     Code shall mean the Internal Revenue Code of 1986, as amended.
     ----

     Committee shall mean the Compensation Committee of the Board of Directors.
     ---------

     Common Stock shall mean shares of the Company's Common Stock, par value
     ------------
$.01 per share, and any security into which such stock shall be converted or
shall become by reason of changes in its nature such as by way of
recapitalization, reclassification, changes in par value, merger, consolidation
or similar transaction.

     Company shall mean GoAmerica, Inc., a Delaware corporation.  When used in
     -------
the Plan with reference to employment, Company shall include Subsidiaries.

     Compensation shall mean the total cash compensation paid to an Eligible
     ------------
Employee by the Company, as reportable on IRS Form W-2.  Notwithstanding the
foregoing, Compensation shall exclude severance pay, stay-on bonuses, long term
bonuses, retirement income, change-in-control payments, contingent payments,
income derived from stock options, stock appreciation rights and other equity-
based compensation and other forms of special remuneration.

     Effective Date shall mean the date of effectiveness of the Company's
     --------------
Registration Statement relating to the initial public offering of the Company's
Common Stock.

     Eligible Employees shall mean only those persons who, as of the first day
     ------------------
of a Purchase Period, are Employees of the Company and who are not, as of the
day preceding the first day of the Purchase Period, deemed for purposes of
Section 423(b)(3) of the Code to own stock possessing 5% or more of the total
combined voting power or value of all classes of stock of the Company.

     Employees shall mean all persons who are employed by the Company as common-
     ---------
law employees, excluding persons (i) whose customary employment is 20 hours or
less per week, or (ii) whose customary employment is for not more than five
months in a calendar year.

     Exercise Date shall mean the last day of a Purchase Period.
     -------------
<PAGE>

     Fair Market Value shall mean: (i) as of the Effective Date the initial
     -----------------
public offering price of the Company's Common Stock as approved by the Board of
Directors; or (ii) as of any date subsequent to the Effective Date, the last
reported sales price of the Common Stock on such date as reported by the Nasdaq
National Market or the principal national securities exchange on which such
stock is listed and traded, or in each such case where there is no trading on
such date, on the first previous date on which there is such trading.

     Participant shall mean an Eligible Employee who elects to participate in
     -----------
the Plan under Section VII hereunder.

     Plan shall mean the GoAmerica, Inc. Employee Stock Purchase Plan, as set
     ----
forth herein and as amended from time to time.

     Purchase Period shall mean: (a) for the initial purchase period, the period
     ---------------
commencing on the Effective Date and ending on December 31, 2000; and (b)
thereafter, purchase periods shall be annual, semi-annual or quarterly, in each
case as elected by the Committee not less than 60 days in advance of the
commencement of such period.  A Purchase Period shall begin on the first
business day of, and end on the last business day of, each such calendar period.
In the absence of any such election, Purchase Periods subsequent to the first
period shall be for one calendar year.  The last Purchase Period under the Plan
shall terminate on or before the date of termination of the Plan provided in
Section XXIV.

     Subsidiary shall mean any corporation which is a subsidiary of the Company
     ----------
within the meaning of Section 424(f) of the Code.

     Termination of Service shall mean the earliest of the following events with
     ----------------------
respect to a Participant:  his retirement, death, quit, discharge or permanent
separation from service with the Company.

     The masculine gender includes the feminine, the singular number includes
the plural and the plural number includes the singular unless the context
otherwise requires.

                                 II.  PURPOSE
                                 ------------

     It is the purpose of this Plan to provide a means whereby Eligible
Employees may purchase Common Stock through payroll deductions.  It is intended
to provide a further incentive for Employees to promote the best interests of
the Company and to encourage stock ownership by Employees in order to
participate in the Company's economic progress.

     It is the intention of the Company to have the Plan qualify as an "employee
stock purchase plan" within the meaning of Section 423 of the Code and the
provisions of the Plan shall be construed in a manner consistent with the Code.

                             III.  ADMINISTRATION
                             --------------------

     The Plan shall be administered by the Committee. The Committee shall have
authority to make rules and regulations for the administration of the Plan, and
its interpretations and

                                      -2-
<PAGE>

decisions with regard thereto shall be final and conclusive. The Committee shall
have all necessary authority to communicate, from time to time, with Eligible
Employees and Participants for purposes of administering the Plan, and shall
notify Eligible Employees promptly of its election of the term of each
forthcoming Purchase Period, if other than a calendar year, and of its election
to utilize the Trust Administration Option referred to in Section IX.

                                  IV.  SHARES
                                  -----------

     There shall be 500,000 shares of Common Stock reserved for issuance to and
purchase by Participants under the Plan, subject to adjustment in accordance
with Section XXI hereof.  The shares of Common Stock subject to the Plan shall
be either shares of authorized but unissued Common Stock or shares of Common
Stock reacquired by the Company.  Shares of Common Stock covered by the
unexercised portion of any terminated option may again be subject to options
granted under the Plan.

                              V.  PURCHASE PRICE
                              ------------------

     The purchase price per share of the shares of Common Stock sold to
Participants under this Plan for any Purchase Period shall be the lesser of (a)
85% of the Fair Market Value of a share of Common Stock on the first day of such
Purchase Period, or (b) 85% of the Fair Market Value of a share of Common Stock
on the Exercise Date of such Purchase Period.

                    VI.  GRANT OF OPTION TO PURCHASE SHARES
                    ---------------------------------------

     Each Eligible Employee shall be granted an option effective on the first
day of each Purchase Period to purchase a number of full shares of Common Stock
(subject to adjustment as provided in Section XXI).  No Eligible Employee shall
be permitted to purchase shares under this Plan (or under any other "employee
stock purchase plan" within the meaning of Section 423(b) of the Code, of the
Company ) with an aggregate Fair Market Value (as determined as of the first day
of the Purchase Period) in excess of $25,000 for any one calendar year within
the meaning of Section 423(b)(8) of the Code.  For a given Purchase Period,
payroll deductions shall commence on the first day of the Purchase Period and
shall end on the related Exercise Date, unless sooner altered or terminated as
provided in the Plan.

     Anything herein to the contrary notwithstanding, if, as of the first day of
a Purchase Period, any Eligible Employee entitled to purchase shares hereunder
would be deemed for the purposes of Section 423(b)(3) of the Code to own stock
(including any number of shares which such person would be entitled to purchase
hereunder) possessing 5% or more of the total combined voting power or value of
all classes of stock of the Company, the maximum number of shares which such
person shall be entitled to purchase pursuant to the Plan shall be reduced to
that number which when added to the number of shares of stock of the Company
which such person is so deemed to own (excluding any number of shares which such
person would be entitled to purchase hereunder), is one less than such 5%.

                                      -3-
<PAGE>

                         VII.  ELECTION TO PARTICIPATE
                         -----------------------------

     An Eligible Employee may elect to become a Participant in this Plan by
completing a "Stock Purchase Agreement" form prior to the first day of the
Purchase Period.  In the Stock Purchase Agreement, the Eligible Employee shall
authorize regular payroll deductions from his Compensation subject to the
limitations in Section VIII below.  Options granted to Eligible  Employees who
fail to authorize payroll deductions will automatically lapse.  If a
Participant's payroll deductions allow him to purchase fewer than the maximum
number of shares of Common Stock to which his option entitles him, the option
with respect to the shares which he does not purchase will lapse as of the last
day of the Purchase Period.

     The execution and delivery of the Stock Purchase Agreement as between the
Participant and the Company shall be conditioned upon the compliance by the
Company at such time with Federal (and any applicable state) securities laws.

                           VIII.  PAYROLL DEDUCTIONS
                           -------------------------

     An Eligible Employee may authorize payroll deductions from his Compensation
for each payroll period of a specified percentage of such Compensation, not less
than 1.0% and not more than 15%, in multiples of 1.0%.

     The amount of payroll deduction shall be established at the beginning of a
Purchase Period and may not be altered, except for complete discontinuance under
Section XI, XIII or XIV hereunder.

                     IX.  EMPLOYEE STOCK PURCHASE ACCOUNT
                        AND TRUST ADMINISTRATION OPTION
                        -------------------------------

     An Employee Stock Purchase Account will be established for each Participant
in the Plan.  Payroll deductions made under Section VIII will be credited to the
individual Accounts.  In the event the Committee determines with respect to any
Purchase Period, not to utilize the "Trust Administration Option" set forth in
the next paragraph, no interest or other earnings will be credited to a
Participant's Account.

     With respect to any one or more Purchase Periods, the Committee may elect
to utilize, in addition to the separate accounting for payroll deductions
provided in the Plan, the option to administer the funding of the Accounts
through a trust established pursuant to a trust agreement between the Company
and an institution exercising fiduciary powers (the "Trust Administration
Option") as hereinafter set forth in this paragraph.  The Company shall provide
for the funding of each Account on a regular basis during each Purchase Period
reflecting payroll deductions of Participants and shall cause such sums to be
deposited within 15 days following such deductions in a trust account at such
institution and upon such terms as are established by the Committee.  The trust
account assets shall be invested in shares of a tax-exempt money-market
registered investment company designated in the trust agreement, which
designation shall not be changed during the Purchase Period.  Assets deposited
in the aforesaid trust account shall be commingled,

                                      -4-
<PAGE>

but a separate accounting shall be kept for each Participant's interest therein.
Each Participant shall be credited with his allocable share of the earnings of
the trust account, which credits shall be reflected in each Participant's
Account balance hereunder. At all times, the funds in such trust account shall
be considered the property of the respective Participants, and no part of the
trust account assets may at any time revert to, or be subject to any lien or
claim of, the Company; provided, however, that such trust account assets may
                       --------  -------
be used only for the purchase of shares as provided in Section X hereof or for
withdrawal by or return to Participants (or their beneficiaries) as provided in
Sections XI, XIII or XXIV hereof.

                            X.  PURCHASE OF SHARES
                            ----------------------

     If, as of any Exercise Date, there is credited to the Account of a
Participant an amount at least equal to the purchase price of one share of
Common Stock for the current Purchase Period, as determined in Section V, the
Participant shall buy and the Company shall sell at such price the largest
number of whole shares of Common Stock which can be purchased with the amount in
his Account.

     Any balance remaining in a Participant's Account at the end of a Purchase
Period will be carried forward into the Participant's Account for the following
Purchase Period.  In no event will the balance carried forward be equal to or
exceed the purchase price of one share of Common Stock as determined in Section
V above.  Notwithstanding the foregoing provisions of this paragraph, if as of
any Exercise Date the provisions of Section XV are applicable to the Purchase
Period ending on such Exercise Date, and the Committee reduces the number of
shares which would otherwise be purchased by Participants on such Exercise Date,
the entire balance remaining credited to the Account of each Participant after
the purchase of the applicable number of shares of Common Stock on such Exercise
Date shall be refunded to each such Participant. Except with respect to a
Purchase Period for which the Trust Administration Option has been elected, no
refund of an Account balance made pursuant to the Plan shall include any amount
in respect of interest or other imputed earnings.

     Anything herein to the contrary notwithstanding, no Participant may, in any
calendar year, purchase a number of shares of Common Stock under this Plan
which, together with all other shares of stock of the Company and its
Subsidiaries which he may be entitled to purchase in such year under all other
employee stock purchase plans of the Company and its Subsidiaries which meet the
requirements of Section 423(b) of the Code, have an aggregate Fair Market Value
(measured as of the first day of each applicable Purchase Period) in excess of
$25,000.  The limitation described in the preceding sentence shall be applied in
a manner consistent with Section 423(b)(8) of the Code.

                                XI.  WITHDRAWAL
                                ---------------

     A Participant may withdraw from the Plan at any time prior to the Exercise
Date of a Purchase Period by filing a notice of withdrawal.  Upon a
Participant's withdrawal, the payroll deductions shall cease for the next
payroll period and the entire amount credited to his Account

                                      -5-
<PAGE>

shall be refunded to him. Any Participant who withdraws from the Plan may again
become a Participant hereunder at the start of the next Purchase Period in
accordance with Section VII.

                     XII.  ISSUANCE OF STOCK CERTIFICATES
                     ------------------------------------

     The shares of Common Stock purchased by a Participant shall, for all
purposes, be deemed to have been issued and sold at the close of business on the
Exercise Date.  Prior to that date, none of the rights or privileges of a
stockholder of the Company shall exist with respect to such shares.  Stock
certificates shall be registered either in the Participant's name or jointly in
the names of the Participant and his spouse, as the Participant shall designate
in his Stock Purchase Agreement.  Such designation may be changed at any time by
filing notice thereof.  Certificates representing shares of purchased Common
Stock shall be delivered promptly to the Participant following issuance.

                         XIII.  TERMINATION OF SERVICE
                         -----------------------------

     (a) Upon a Participant's Termination of Service for any reason other than
death or voluntary termination of employment on or after attaining age 55
("Retirement"), no payroll deduction may be made from any Compensation due him
as of the date of his Termination of Service and the entire balance credited to
his Account shall be automatically refunded to him.

     (b) Upon a Participant's Retirement, no payroll deduction shall be made
from any Compensation due him as of the date of his retirement.  Such a
Participant may, prior to Retirement, elect:

         (1) to have the entire amount credited to his Account as of the date
     of his Retirement refunded to him, or

         (2) to have the entire amount credited to his Account held therein and
     utilized to purchase shares on the Exercise Date as provided in Section X
     and in accordance with all applicable requirements of the Code relating to
     the Plan.

     (c) Upon the death of a Participant, no payroll deduction shall be made
from any Compensation due him at time of death, and the entire balance in the
deceased Participant's Account shall be paid to the Participant's designated
beneficiary, or otherwise to his estate.

                   XIV.  TEMPORARY LAYOFF, AUTHORIZED LEAVE
                            OF ABSENCE, DISABILITY
                            ----------------------

     Payroll deductions shall cease during a period of absence without pay from
work due to a Participant's temporary layoff, authorized leave of absence,
disability or for any other reason.  If such Participant shall return to active
service prior to the Exercise Date for the current Purchase Period, payroll
deductions shall be resumed in accordance with his prior authorization.

     If the Participant shall not return to active service prior to the Exercise
Date for the current Purchase Period, the balance of his Stock Purchase Account
will be used to purchase

                                      -6-
<PAGE>

shares on the Exercise Date as provided in Section X and in accordance with all
applicable requirements of the Code relating to the Plan, unless the Participant
elects to withdraw from the Plan in accordance with Section XI.

                XV.  PROCEDURE IF INSUFFICIENT SHARES AVAILABLE
                -----------------------------------------------

     In the event that on any Exercise Date the aggregate funds available for
the purchase of shares of Common Stock pursuant to Section X hereof would result
in purchases of shares in excess of the number of shares of Common Stock then
available for purchase under the Plan, the Committee shall proportionately
reduce the number of shares which would otherwise be purchased by each
Participant on the Exercise Date in order to eliminate such excess, and the
provisions of the second paragraph of Section X shall apply.

                         XVI.  RIGHTS NOT TRANSFERABLE
                         -----------------------------

     The right to purchase shares of Common Stock under this Plan is exercisable
only by the Participant during his lifetime and is not transferable by him.  If
a Participant attempts to transfer his right to purchase shares under the Plan,
he shall be deemed to have requested withdrawal from the Plan and the provisions
of Section XI hereof shall apply with respect to such Participant.

                    XVII.  NO OBLIGATION TO EXERCISE OPTION
                    ---------------------------------------

     Granting of an option under this Plan shall impose no obligation on an
Eligible Employee to exercise such option.

                 XVIII.  NO GUARANTEE OF CONTINUED EMPLOYMENT
                 --------------------------------------------

     Granting of an option under this Plan shall imply no right of continued
employment with the Company for any Eligible Employee.

                                 XIX.  NOTICE
                                 ------------

     Any notice which an Eligible Employee or Participant files pursuant to this
Plan shall be in writing and shall be delivered personally or by mail addressed
to the Compensation Committee, c/o Chief Financial Officer at GoAmerica, Inc.,
401 Hackensack Avenue, Hackensack, New Jersey 07666 or such other person or
location as may be specified by the Committee.

                           XX.  REPURCHASE OF STOCK
                           ------------------------

     The Company shall not be required to repurchase from any Participant shares
of Common Stock acquired under this Plan.

                                      -7-
<PAGE>

              XXI.  ADJUSTMENT FOR RECAPITALIZATION, MERGER, ETC.
              ---------------------------------------------------

     The aggregate number of shares of Common Stock which may be purchased
pursuant to options granted hereunder, the number of shares of Common Stock
covered by each outstanding option, and the purchase price thereof for each such
option shall be appropriately adjusted for any increase or decrease in the
number of outstanding shares of Common Stock resulting from a stock split or
other subdivision or consolidation of shares of Common Stock or for other
capital adjustments or payments of stock dividends or distributions or other
increases or decreases in the outstanding shares of Common Stock affected
without receipt of consideration of the Company.

     Subject to any required action by the stockholders, if the Company shall be
the surviving corporation in any merger, reorganization or other business
combination, any option granted hereunder shall cover the securities or other
property to which a holder of the number of shares of Common Stock would have
been entitled pursuant to the terms of the merger.  A dissolution or liquidation
of the Company or a merger or consolidation in which the Company is not the
surviving entity shall cause every option outstanding hereunder to terminate.

     The foregoing adjustments and the manner of application of the foregoing
provisions shall be determined by the Committee in its sole discretion.  Any
such adjustment shall provide for the elimination of any fractional share which
might otherwise become subject to an option.

                         XXII.  AMENDMENT OF THE PLAN
                         ----------------------------

     The Board of Directors may, without the consent of the Participants, amend
the Plan at any time, provided that no such action shall adversely affect
options theretofore granted hereunder, and provided that no such action by the
Board of Directors, without approval of the Company's stockholders, may:

     (a) increase the total number of shares of Common Stock which may be
purchased by all Participants, except as contemplated in Section XXI;

     (b) change the class of Employees eligible to receive options under the
Plan;

     (c) decrease the minimum purchase price under Section V;

     (d) extend a Purchase Period hereunder; or

     (e) extend the term of the Plan.

                      XXIII.  INTERNATIONAL PARTICIPANTS
                      ----------------------------------

     With respect to Eligible Employees who reside or work outside the United
States of America, the Committee may, in its sole discretion, amend the terms of
the Plan with respect to such Eligible Employees in order to conform such terms
with the requirements of local law.

                                      -8-
<PAGE>

                            XXIV.  TERM OF THE PLAN
                            -----------------------

     This Plan shall become effective as of the Effective Date upon its adoption
by the Board of Directors, provided that it is approved at a duly-held meeting
of stockholders of the Company, by an affirmative majority of the total votes
present and voting thereat, within 12 months after the earlier of the Effective
Date or the date of adoption by the Board of Directors.  If the Plan is not so
approved, no Common Stock shall be purchased under the Plan and the balance of
each Participant's Account shall be promptly returned to the Participant.  The
Plan shall continue in effect through the December 31st following the fourth
anniversary of the Effective Date, unless terminated prior thereto pursuant to
the next succeeding sentence.  The Board of Directors shall have the right to
terminate the Plan at any time, effective as of the next succeeding Exercise
Date.  In the event of the expiration of the Plan or its termination,
outstanding options shall not be affected, except to the extent provided in
Section XV and any remaining balance credited to the Account of each Participant
as of the applicable Exercise Date shall be refunded to each such Participant.

                                      -9-