Background: To produce a conceptual and operational definition of transition, in the context of end-of-life care, as experienced by informal caregivers. Methods: The authors used Rodgers' (2000) concept analysis framework to examine this concept. Findings: Common themes emerged using Rodgers' (2000) inductive approach confirming transition for informal caregivers at the end of life as a process comprising the presence of trigger(s)/event(s), awareness, instability and engagement/learning while maintaining normality.