EXHIBIT AAmendment No. 1 to Schedule 13g • September 30th, 2003 • Oak Management Corp • Services-prepackaged software
Contract Type FiledSeptember 30th, 2003 Company IndustryEach of the undersigned hereby agrees that Amendment No. 1 to Schedule 13G filed on the date hereof with respect to the Ordinary Shares of ClickSoftware Technologies Ltd. has been filed on behalf of the undersigned.