In 2008, the U.S. economy collided with two historic forces. The first force was the Great Recession, the most severe economic crisis in a generation. While the economy has recovered considerably over the last five years, there is little doubt that more work remains to address some of the challenges left in the wake of the Great Recession. This book analyses the evolution of the labour force participation rate since late 2007 and attempts to quantify the effects of these various forces.