The challenge of this paper is to re-examine the demographics which underlie the re-write of social policy in an aging Canada, as related to gender, family and generation. Following a brief consideration of Canada's changes and challenges in comparison to those in the United States and selected European countries, the analytical construct, “life cycles of dependencies and responsibilities” is introduced and utilized to examine shifting bases of security among generations (with a focus on six cohorts), and in particular, the implications of possible changes to social policy for the elderly on women, the poor and other disadvantaged elders.