This study represents one phase of a broader research project designed to develop and test the Occupation Analysis Inventory (OAI). The specific objective of the present investigation was to systematically derive a comprehensive set of work dimensions that could be used in describing and classifying jobs for educational purposes. The OAI was applied to a sample of 400 jobs representative of the percentages of jobs in the major occupational categories of the "Dictionary of Occupational Titles." Duplicate ratings were obtained on a subsample of 134 jobs for reliability purposes. Seven separate principal components factor analyses were performed within groups of items corresponding to the following sections of the OAI: (1) Information Received, (2) Mental Activities, (3) Physical Work Behavior, (4) Representational Work Behavior, (5) Interpersonal Work Behavior, (6) Work Goals, and (7) Work Context. The item reliabilities obtained were, for the most part, acceptable. The results of the seven sectional factor analyses were found to be generally meaningful; of the 81 factors emerging from these analyses, 77 were interpreted. Some potential applications of the OAI dimensions were also discussed. It was noted, however, that both the stability and utility of these dimensions remain to be demonstrated. A related study is VT 015 084. (Author/JS)