Your must-read of the day is Matthew Boesler's examination of the impact of retiring Baby Boomers on the Labor Force Participation Rate.
Short-story: While it's true that the Labor Force Participation Rate of the Baby Boomer cohort has ticked up a bit, the overall shift from prime-age workers to Baby Boomers has been a big driver of lower workforce participation.
This one chart shows why 12.6 million people have left the workforce since 2007.
Business Insider/Matthew Boesler (data from Atlanta Fed, courtesy of Ellyn Terry)
Why people have left the labor force.