I did some research on the French Republican calendar and found some contradictory information on weekly (or decadian?) holidays.
Wikipedia (and most other articles I found) mention:
The calendar was abolished because having a ten-day working week gave workers less rest (one day off every ten instead of one day off every seven);
In school I learned that Quintidi and Décadi were holidays (so, each 5th day was a holiday). Nevertheless, the argument for less rest is still valid, since there were a lot of additional Christians holidays.
There are also some hits on the web regarding a half holiday solution.
Office, schools, shops and tribunals were required to close on quintidi afternoons, apart from the décadi. So, there was one and a half free days each 10 days, slightly better than a free day each seven-days week.
Does anyone have detailed information about this topic?