How and when is the leave benefit calculated for holidays lasting at least 14 calendar days? 

[Answer] The leave benefit is automatically calculated after the leave request has been approved. The benefit is calculated only for the first application (lasting at least 14 calendar days) in a given calendar year. 

If the leave bonus is not automatically included with the salary paid, then you should address the relevant question to hr department by means of the application: “Please verify and pay a leave benefit that I did not receive automatically with the salary despite the fulfilment of the conditions.”