If You Want to Live Longer, Keep Working, Study Suggests. Or, You Know, Start a Business After You Retire. Posted by April 29, 2016 Leave a comment on If You Want to Live Longer, Keep Working, Study Suggests. Or, You Know, Start a Business After You Retire. ‘It may not apply to everybody, but we think work brings people a lot of economic and social benefits that could impact the length of their lives,’ researcher says.