This book is a mine on the history of the twentieth century France. It deals with the employers but it restores perfectly in its historical, social and economic. It can be read like a historical encyclopedia and can be the basis for further research. The authors have made a real investigative work and we tried to be more accurate with a subject often poorly known or overused. The book gives a real insight into a period of history of France which helps to understand that capitalism was in French and why it has that face today. Excellent book not to be missed. It is essential in a library.