In 1931 the International Association for Social Progress decided to undertake an enquiry concerning the effects of a shorter working week on unemployment and productivity. This title, first published in 1934, provides an analysis of information obtained through the author's private research on the subject.

1. The Reason for a Reduction in the Hours of Work 2. Rationalisation 3. The Weekly Hours Now Worked 4. The Two-Shift System 5. The Two-Shift System in Continuous Operation 6. The Two-Shift System in Intermittent Operation 7. The opinions of the Workers and Others on the Two-Shift System 8. The Problem of Leisure; Index