Maybe I can add something to that. There's an extensive body of literature on caregivers, particularly the work of Janet Fast at the University of Alberta, in which she documents, using data from Statistics Canada, the impact on people who provide care to older people, including the fact that they often have to take early retirement, they have to reduce their paid working hours, they may have to take time off, they're not available for activities that could lead to promotions, and that kind of thing. So it does affect the timing of their own retirements and their ability to earn an income, and so on. There's a lot of information about that in studies that she has done, along with those by other people.
On February 15th, 2007. See this statement in context.