Leave Policy varies from company to company. How the Leave Policy is framed in the organization is the point of thought. If the organization is allowing all the casual leaves at a time then the employee is surely eligible for the 12 days of casual leave. Usually in the policy, the CL is given not more than three days, and at the same, it should not be clubbed with any other leave. No legal framework is available for any leaves except for Earn Leave and Factories Act under the Factories Act and of course the Medical leave under ESI. So giving at a stretch 12 CL is the Policy Discretion. This is my point of view. Further when CL lapses at the end of the year and if the employee has not taken any CL to date, you may allow. It may depend on Employee Leave Discipline also.
Dr Y Nagendra Kumar
HR Consultant and CEO
MIND TREAT KKD
KAKINADA