One instrument, the Job Descriptive Index (JDI), used for indexing job satisfaction is described in this paper. The techniques for analyzing and using the data collected by administering this instrument are also presented. The JDI measures job satisfaction in the areas of pay, promotion, supervision, work, and people on the job. This paper includes: (1) the criteria for selecting an instrument for measuring job satisfaction, (2) a heuristic model for determining job attitudes, (3) a heuristic model for measuring employee attitudes, (4) a model illustrating actual employee attitudes in a specific organization and (5) an illustration of the dynamic nature of individual employee's feelings about his job. (Related studies are: LI003816 and LI003818 through 003821). (Author/NH)