The History of Retirement Full Size Version Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content 18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.