User involvement in information system development has long received research attention due to its significant effects on information system success. Prior studies have tended to focus on the consequences of user involvement, and in contrast, this research focuses on the factors that influence user involvement. The factors deserving more attention are organizational identification (OI) and organizational citizenship behaviours (OCBs). Although OI and OCBs have long received research attention, little is known of the effects of OI and OCBs in the context of information system development, specifically in the context of user involvement. In this study, we integrate three research streams—OI, OCBs, and user involvement into one model in order to investigate whether OI and OCBs: altruism and courtesy affect user involvement.