This is an incident indicative of lack of maintenance of leave accounts of employees by the establishment. Basically the term "leave" means leave of absence - that is the formal permission to be away from work at the request of the employee. Whether such a leave entitles an employee to wages/salary is a secondary issue depending on the type of leave, balance at credit, no. of days required etc. and mere sanction by inadvertance or otherwise can not favour an employee to claim leave salary. If there is no leave balance, as rightly observed by Ravi, it has to be treated as L.O.P only. However, if there is a provision for " Leave-not-due" type of leave in the Leave Rules of the organization, pay for the leave can be allowed in anticipation of adjustment against the leave to be earned subsequently.