Dear Surendar, if you read my answer once again, you'll understand that I've already addressed this. Any leave is subject to prior sanction, meaning it has to be applied for in advance. The application process depends on the type and duration of leave intended by the employee, including the format of the application, the administrative hierarchy through which the application should be submitted, and any alternative arrangements. These procedural formalities are typically outlined in the organization's leave manual by the employer.
Regarding casual leave, there is a possibility that an employee may suddenly fall ill on the way to the office or workplace and need to request casual leave orally via phone, submitting a written application later. Similarly, if an employee plans to attend a wedding scheduled for the following week, they may request 3 days of casual leave in advance to seek prior approval. The utilization of casual leave is primarily based on convenience or emergency situations, while the procedural aspects of application submission and approval are subject to logical discretion. As such, specific regulations on these matters may not be found in statutes or rules.
Thank you.