This paper describes the differences of the information system's success factors to improve the end-user‘s performance according to the job characteristics. A modified model of DeLone and McLean‘s IS success model is proposed with the two added variables of the top management concern and the IS department support. The model is validated using data collected from a field study of 3872 users on 3 Korean companies. ANOVA, correlation analysis, and stepwise regression are used to test research hypotheses.
The results of the study indicate the following implications. First, the top management concern and the IS department support have the significant relations with the system usage and the user‘s satisfaction. Second, the system quality has an influence on the user’s satisfaction more than on the system usage. And the information quality has an influence on the system usage more than on the system usage. Third, the system usage has more relations to the user's performance in the logistics function and R&D function. The user‘s satisfaction has more relations to the user's performance in the sales and the A/S function. Therefore information system strategy to increase the user's performance must be differentiated according to job characteristics.
