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This study integrates service fairness into a post-acceptance model of information system continuance. This study added constructs based on Greenberg’s (1993) four-component taxonomy of organizational justice. The research model seeks to be useful in predicting satisfaction, which enhances continued usage of an IS. The results show that perceived usefulness and satisfaction influence continuance intention, as the post-acceptance model predicts. Three of the four distinct service fairness dimensions, systemic, configural and interpersonal fairness, significantly enhanced satisfaction. However, the relationship between informational fairness and satisfaction was negative and significant.