EXHIBIT A AGREEMENT OF REPORTING PERSONS Each of the undersigned hereby agrees that Amendment No. 1 to Schedule 13G filed on the date hereof with respect to the shares of Common Stock of Concur Technologies, Inc. has been filed on behalf of the...

                                                                   EXHIBIT 99(A)

                                                                   Page 16 of 22

                                    EXHIBIT A

AGREEMENT OF REPORTING PERSONS

     Each of the undersigned hereby agrees that Amendment No. 1 to Schedule 13G
filed on the date hereof with respect to the shares of Common Stock of Concur
Technologies, Inc. has been filed on behalf of the undersigned.

SIGNATURE:

     Dated: February 7, 2003

Entities:

Oak Investment Partners VII, Limited Partnership
Oak Associates VII, LLC
Oak VII Affiliates Fund, Limited Partnership
Oak VII Affiliates, LLC
Oak Management Corporation

                                          By:     /s/ Xxxxxx X. Xxxxxxxxxx
                                              ---------------------------------
                                                   Xxxxxx X. Xxxxxxxxxx, as
                                                   General Partner or
                                                   Managing Member or as
                                                   Attorney-in-fact for the
                                                   above-listed entities

Individuals:

Bandel X. Xxxxxx
Xxxxxx X. Xxxxxxxxx
Xxxxxx X. Xxxxxxxxxx
Xxxxxxx X. Xxxxxx
Xxx X. Xxxxxx

                                          By:     /s/ Xxxxxx X. Xxxxxxxxxx
                                              ---------------------------------
                                                   Xxxxxx X. Xxxxxxxxxx,
                                                   Individually and as
                                                   Attorney-in-fact for the
                                                   above-listed individuals