Involuntary Unemployment

The Great Depression of the 1930s with its dramatic unemployment rates was one of the most striking economic events of the past century. It shook economists' beliefs in the existence of self-adjusting forces and prompted Keynes to write his masterwork, The General Theory of Employment, Interest and Money.

Involuntary unemployment was the central concept of Keynes' book. However, after having been considered the sine qua non of economics for decades, it has gradually disappeared from textboo...