Core Points - There is no official retirement age in the U.S., with age 62 being the earliest to claim Social Security and age 67 as the full retirement age for those born in 1960 or later [1] - Age 65 marks the beginning of Medicare eligibility, often associated with "on time" retirement [2] Group 1 - Delaying retirement can potentially address inadequate IRA or 401(k) balances by allowing individuals to add to their savings and letting existing savings grow [4][5] - However, the ability to work full-time may not be guaranteed due to potential downsizing by employers or health issues that could arise [6][7] - There may be alternative solutions to the problem of insufficient savings that are more sustainable than simply working longer [8]