This report provides information on the administration of the 2004 Workplace and Gender Relations Survey of Reserve Component Members hereinafter referred to as 2004 WGRR. The 2004 WGRR utilized both modes of administration-the Web as well as paper-and-pencil and was designed to document the extent to which Reserve members report experiencing unwanted, uninvited sexual attention, the details surrounding those events (e.g.,where they occur), and Reserve members' perceptions of the effectiveness of sexual harassment policies, training, and programs. Data were collected by mail and Web, between March 2004 and June 2004. The sample consisted of 76,031 Reserve Component Members. A total of 26,443 eligible members returned usable surveys, which represent an adjusted weighted response rate of 34.8%.