
<PAGE>

                                                                    EXHIBIT 99.1

                           NEWGEN RESULTS CORPORATION
                    PROXY SOLICITED BY THE BOARD OF DIRECTORS
                     FOR THE SPECIAL MEETING OF STOCKHOLDERS
                       TO BE HELD ON DECEMBER 20, 2000


     The undersigned hereby appoints Gerald L. Benowitz and Samuel Simkin,
and each of them, as attorneys and proxies of the undersigned, with full
power of substitution, to vote all of the shares of stock of Newgen Results
Corporation which the undersigned may be entitled to vote at the Special
Meeting of Stockholders of Newgen Results Corporation to be held at the
company's offices at 12680 High Bluff Drive, Suite 300, San Diego, CA 92130
on December 20, 2000, at 7:00 a.m. (local time), and at any and all
postponements, continuations and adjournments thereof, with all powers that
the undersigned would possess if personally present, upon and in respect of
the following matters and in accordance with the following instructions, with
discretionary authority as to any and all other matters that may properly
come before the meeting.


TO VOTE BY MAIL

Please date, sign and mail your proxy card in the envelope provided as soon as
possible.


TO VOTE BY TELEPHONE (TOUCH-TONE PHONE ONLY)

Please call toll-free [______] and follow the instructions. Have your control
number and the proxy card available when you call.


TO VOTE BY INTERNET

Please access the web page at [___________] and follow the on-screen
instructions. Have your control number available when you access the web page.

YOUR CONTROL NUMBER IS _____________________

<PAGE>

     Please Detach and Mail in the Envelope Provided.


[X]  Please mark your vote as in this example.


The Board of Directors recommends a vote "FOR":

1.   The proposal to adopt the agreement and plan of merger dated as of
August 21, 2000, by and among Newgen Results Corporation, a Delaware
corporation, TeleTech Holdings, Inc., a Delaware corporation and NG
Acquisition Corp., a Delaware corporation and a wholly owned subsidiary
TeleTech Holdings, Inc., pursuant to which NG Acquisition Corp. will be
merged with and into Newgen Results Corporation.

[ ]  FOR                   [ ]  AGAINST               [ ]  ABSTAIN


THE PROXY WHEN PROPERLY EXECUTED WILL BE VOTED AS DIRECTED. IF THE PROXY IS
SIGNED AND RETURNED AND NO DIRECTION IS INDICATED, THE PROXY WILL BE VOTED
FOR PROPOSAL 1 AND IN THE DISCRETION OF THE PROXIES FOR ANY OTHER MATTERS
PROPERLY PRESENTED AT THE MEETING.

Dated
     -----------------------------


                                       --------------------------------------
                                                    Signature(s)

                                       Please sign exactly as your name appears
                                       hereon. If the stock is registered in the
                                       names of two or more persons, each should
                                       sign. Executors, administrators,
                                       trustees, guardians and attorneys-in-fact
                                       should add their titles. If signer is a
                                       corporation, please give full corporate
                                       name and have a duly authorized officer
                                       sign, stating title. If signer is a
                                       partnership, please sign in partnership
                                       name by authorized person.


Please vote, date and promptly return this proxy in the enclosed return envelope
which is postage prepaid if mailed in the United States.
