This federally funded report provides the results of a task inventory analysis survey for data processing occupations. Presented before completion of the major project so that pertinent occupational data may be available for curriculum developers, instructors, and others involved in planning and conducting vocational and technical programs, this interim report will constitute part of a system for revising and designing curriculums for 1- or 2-year post secondary educational programs in data processing. A task inventory was constructed and validated by means of a literature review and an analysis by five consultants employed in data processing. A random sample of 38 data processing installations yielded usable responses from 406 out of 500 workers sampled by means of interviews and the task inventory. Task performance frequencies, task commonalities, and time allotments were determined. Job descriptions for data processing were validated and an occupational career ladder was found to be clearly indicated from the lowest to the highest job titles. Statistical results are appended. (AG)