One thing you don't have in France that I've seen in places like Japan is that people can get home relatively early and actually get a good night's sleep. A seemingly universal trait of offices in Japan is at least one person napping because they just collapse from fatigue and overwork.

Publishing an article about French productivity on July… That is so cute :)

In July and August, the huge majority of people here are taking 3 to 4 weeks of vacations. Every company are slow, except for the vacation/leisure/eating/etc ones.