Well, the legal minimum is 5 weeks (congés payés), but I got also 2 more weeks, called RTT because the maximum number of weekly worked hours is 35h and it's exp

Well, the legal minimum is 5 weeks (congés payés), but I got also 2 more weeks, called RTT because the maximum number of weekly worked hours is 35h and it's expected that I work more than the 35h maximum per week, so the additional days off are to compensate for this (and since we're not paid by the hour, we can't just get overtime).