The pros and cons of part-time work have attracted considerable attention in recent years, not least because of its presumed potential to enable employees to reconcile paid work and family needs. This article focuses on job-sharing, which is a unique yet underexplored form of part-time work and one which has rarely been analysed in terms of the consequences for all stakeholders. This case study of job-sharing details its positive outcomes for some employees, in assisting them to balance career and family. The study also highlights some previously unexplored and, we argue, unintended negative consequences of job-sharing. In this case, job-sharing contributed to the increased use of temporary employees who were locked out of many of the benefits of quality flexible work. Furthermore, the case study reveals competing interests between permanent and temporary employees, creating a range of challenges for human resource practitioners in managing and developing both groups.