Although the experiences of formal and informal caregiving have been discussed and debated in the literature, more is assumed than is actually known (McDaniel & Gee, 1993). This qualitative study explored both informal and formal caregivers' perceptions of their own caregiving and the views of each other's caregiving. Information was collected through the use of in-depth interviews with 23 family caregivers and 15 nurses providing home care to older persons. Analysis of interview transcripts and field notes reveals that both informal and formal caregivers engage in all facets of caring work – physical, intellectual and emotional care – but that they carry out this work in varying degrees, and for different reasons. The reasons given for these differences, namely the nurses' professional knowledge and higher status designation, are key elements that define the boundaries between professional and family caregiving. However, it is apparent that, over time, this demarcation diminishes as family caregivers' knowledge and skill match those of health professionals. Study findings point to implications for future theory development and research.