18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Good Health is Good Business Good employee health can be great for the company’s bottom line. Retirement Questions That Have Nothing to Do With Money Things to consider before retirement. Mortgages in Retirement Explore the benefits and drawbacks to paying off your mortgage prior to retirement with this article.