||This paper aims at a description of the process of reduction of the working week in France from 40 to 35 hours as a method of fight against the unemployment. The working week lenght evolution and laws shortening the working week including detailed overview of their content are introduced. The paper identifies main actors in this process, their demands and interests and consequently their expectations related to the reduction of the working week to 35 hours. The evolution of main economic indicators in 1990's and conditions for working time in other advanced countries are presented to show the wider context of reduction of this topic. At the end of this work the attention is focused at verification of the positive effect of working week reduction on the unemployment.