Why the workweek is increasing
In the late 1990s, the "official" workweek was 40 hours in the United States, although many workers in fact put in more hours than this. For example, in industries like investment banking, a 40-hour workweek is considered "slacker" behavior and may result in job loss. In France, the workweek was 39 hours until 2000.
Some nations enforce their workweek policies more stringently than others, the United States being an example of a country where workweek policies are not strictly enforced. The U.S. legally allows many types of compensation, and two of the most common are wage and salary labor. Wage earners are compensated on a per-hour basis, whereas salaried workers are compensated on a per-week basis.
The 40-hour workweek, in effect, applies only to wage laborers. Legally, they may be required to work more than 40 hours, but firms are required to pay time-and-a-half, or 1.5 times the worker's base wage, for each hour of work past 40. After 60 hours per week, firms are required to pay double-time, or twice the base rate. This has two major effects: First of all, it provides an incentive for companies to limit the workweek. Secondly, it makes these additional hours more desirable for the worker. In fact, it is not uncommon for overtime hours to be accepted voluntarily by wage-earning workers, due to the premium pay. Unions often treat overtime as a desirable commodity when negotiating how these opportunities shall be partitioned among union members.
Salaried workers are not covered by overtime protections. At the time the laws were written, salaried workers were predominantly of the upper-middle and upper classes, and these individuals were autonomous enough that there was no need for them to be legally protected.
Today, by contrast, even salaried and professional workers are sometimes marginalized by "dieting" firms, especially during economic downturns when skilled workers are in surplus. By increasing a salaried worker's workweek, his or her per-hour pay is effectively reduced, so labor becomes cheaper. Many American corporations have done just that, laying off as many workers as possible, making their labor forces understaffed by a factor as high as 2 or 3, and leaving their employees to make up for the lost workers with longer hours. While virtually all observers have decried this situation as immoral, it persists, driven by the corporate profit motive.
Consequently, a disturbing picture has emerged, recently, in the United States and other Western societies: The society consists of pockets of unemployment, amidst other pockets of overworked employed workers.