All right, here's a more fun discussion: the two-day weekend as we know it didn't exist before the 19th century.
In the early 19th century, the concept of a weekend began to form in industrial Britain, where factory owners and workers agreed to Saturday afternoons off to ensure workers were sober, rested and refreshed for Monday.
In 1843, a campaign started in Greater Manchester to give mill workers a half-day holiday on Saturday afternoons. This was granted in September 1843, and is considered the invention of the weekend.
Jewish workers observed (and many still do observe) the Sabbath, from sundown Friday to sundown Saturday. This led to the first
American five-day workweek in 1908 to accommodate them.
The concept was later formalised into a true two-day weekend in the early 20th century by figures like Henry Ford, who granted his workers a full Saturday and Sunday off by 1926 to encourage leisure spending. (That doesn't quite make up for him being a horrible racist bastard, though). =P Ford, by the way, didn't do this for humanitarian reasons but to create customers for his cars.
This was then cemented into law in the United States by the Fair Labor Standards Act of 1938, which established a forty-hour workweek.
The two-day weekend quickly spread across the globe, becoming standard in countries like the United States and Canada by 1955. By the 1970s, the 40-hour workweek and weekend were common across Europe.
Not everyone had a two-day weekend, though. People who worked in rich and middle-class British houses, like butlers, cooks, footmen, maids and so on certainly didn't. Their only time off consisted of Sunday for church (which was obligatory) and possibly one afternoon off each week (which was a luxury rather than standard practice, not guaranteed, and some servants didn't even get that).
It's possible that the people who owned the rich houses didn't think of this as cruel, but simply standard practice. In an era before electric conveniences like washing machines, vacuum cleaners and so on, it was impossible for a rich family to "keep up appearances" without a horde of servants to do all the cleaning, dusting and cooking. It was simply a different economic reality to what we are used to.
Also, many men and women who went into service simply had no other jobs they could do, apart from working in a factory or in a shop, and at least working in a rich house meant a roof over your head and guaranteed meals. But the hours were long, the work was hard, and the pay wasn't always very good. (Sorry for the understatement).
