This document reports on the content model of the Occupational Information Network (O*NET), which is intended to replace the "Dictionary of Occupational Titles." The following chapters are included: "Introduction" (Michael D. Mumford and Norman G. Peterson); "Content Model" (Michael D. Mumford and Norman G. Peterson); "Skills" (Michael D. Mumford and Norman G. Peterson); "Knowledges" (Edwin A. Fleishman, David P. Costanza, Leon I. Wetrogan, Charles E. Uhlman, Joanne C. Marshall-Mies); "Education" (Lance Anderson); "Generalized Work Activities" (P. Richard Jeanneret and Walter C. Borman); "Work Context" (S. Morton McPhail, Barry R. Blakley, Mark H. Strong, Tonya J. Collings, P. Richard Jeanneret, Laura Galarza); "Organizational Context" (Sharon Arad, Rob Schneider, Mary Ann Hanson); "Training, Experience, and Licensure" (Lance Anderson); "Abilities" (Edwin A. Fleishman, Leon I. Wetrogan, Charles E. Uhlman, Joanne C. Marshall-Mies); "Occupational Values and Interests" (Christopher E. Sager); "Work Styles" (Walter C. Borman, Amy Schwartz McKee, Robert J. Schneider); "Occupational Characteristics (Lloyd Feldman, Frank Bennici, Regina Yudd); "Procedures for Collecting Occupation-Specific Information" (Michael D. Mumford); and "Conclusions" (Michael D. Mumford). The following questionnaires are appended: skills questionnaire; knowledges questionnaire; training, education, licensure, and experience questionnaire; generalized work activities questionnaire; work context questionnaire; organizational context questionnaire; abilities questionnaire; occupational values questionnaire; and work styles questionnaire. Many chapters include substantial bibliographies. (MN)