The purpose of this study is to present a new construct - perceived maintenance load (PML) – which captures the users’ perceptions of maintenance load associated with using a High Maintenance Information Systems (HMIS). HMIS is a class of information systems that requires an ongoing maintenance effort to maintain the system in order to continuously derive its benefits. To develop the PML construct, the procedure recommended by Lewis et al. (2005) will be followed. This work-in-progress paper presents the first-stage results of this methodology only. The purpose and importance of the PML construct is specified and the conceptual definition of PML, which draws on the concepts of mental workload and rumination theories, is developed. Plans for future research are outlined.