The opportunity costs associated with the provision of informal care are usually estimated based on the reduced potential of the caregiver to partake in paid work (both in terms of whether they are able to undertake paid work, and if so the hours of work undertaken). In addition to the hours of informal care provided, these opportunity costs are also likely determined by the necessity to perform particular informal care tasks at specific moments of the day. The literature, to date, has largely overlooked this dimension of informal care.