Retiring at 65 was once the American promise. But for a growing number of Americans, that is no longer realistic.
The shift is visible. Census data analysed by Business Insider shows 4.2 per cent of Americans aged 80 and older are still working, up from 3 per cent in 2010. The 75-plus age group is the fastest-growing segment of the US labour market. One in five people over 65 holds a job - double the rate from the 1980s.
