Jesus christ, did anyone actually read either of those last two posts? No?
Anyway, BYmonek you seem to think the company means well in rostering. Looking at your join date = 2004 or something, have you been here since 2004? If so, you should be well aware of the rot which set in back then.
This is not about "supply and demand....haven't enough pilots, "hence" (???) unbalanced work hours during leave months". Seriously????
Zero credit for leave is strictly intentional and a part of how the company continues to make more and more money: Part of every annual profit is cost cutting and staff shaftings.