Registered nurses' (RNs') role in Norwegian home care services exists in a state of flux owing to the early discharge of patients from hospitals, more time-consuming and complex care for young patients, and a growing number of older care recipients. The aim of this study was to investigate the RN role through an integrative research review, with a focus on nursing activities and competence. This study found that RNs and assistant nurses often perform the same tasks, providing assistance with personal hygiene, medication and wound management. The change towards more medicalized and complex home care entails that requirements pertaining to RNs' competence, the allocation of RNs' time and skills to those in most need of nursing care, and the assignment of assistant nurses to lower care levels activities must be delineated. Norwegian home care must examine how care activities can be better allocated between RNs, social educators, assistant nurses, and informal care-givers.