Leave Rules and Procedures
Casual Leave: Any leave, with prefixes and suffixes. If holidays fall in the middle of the leave, they can be availed as Casual Leave. Sundays can be treated as permission. If Saturdays (for a five-working-day organization), Monday can be availed as casual leave with Prefix Saturday and Sunday as permissions (being declared leaves). Any important holidays can be availed with the casual leave.
Earned Leave: Only prefixes and suffixes can be availed. No other holidays in between can be treated as permissions. All that should be treated as earned leave.
Medical Leave: No permissions required. Up to the date of submitting a fitness certificate, it needs to be regularized according to the organization's rules and regulations or as per the procedure in vogue.
Sick Leave: No permissions required, as per the procedure in vogue.
Bereavement Leave: No permissions needed, according to the procedure in vogue. Rest with the authority who is sanctioning leave or organizational procedures.
Hospital Leave: Exceptional cases in government services, particularly armed forces/subordinate forces.
In this case, you cannot treat leave in continuation as casual leave; all that should be treated or regularized.
Best of luck.