The mean and median target retirement ages are right around 55, far below the national average of 62. (dividendempire.com)
It's a small sample size (only 3 people in the survey do not like their job), but the data shows that job satisfaction does not influence target retirement age. (dividendempire.com)
I would expect minimum acceptable yield to decrease with increasing target retirement age (assuming a longer time horizon — I should have asked for ages...). (dividendempire.com)