Observations on munition workers are organized to examine the relationship between their output each week, their working hours and days each week, and their working hours and days in adjacent weeks. The hypothesis is that workers need to recover from work and a long working week results in...

"The book concerns working hours - in the past and in the present, in America and in Britain. The focus is on the relation between hours of work and outcomes such as production and health. Proportional increases in hours of work are shown to result in smaller proportional increases in production...