Retirement Redefined Around the country, attitudes about retirement are shifting. Share | Related Content 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? Is a SEP-IRA Right for Your Business? For some, the idea of establishing a retirement strategy evokes worries about complicated reporting and administration. Investment Strategies for Retirement Investment tools and strategies that can enable you to pursue your retirement goals.