Hi Hema,
Regarding your query, every employee should adhere to the company policy. You mentioned that the notice period is specified in his appointment order, so he should comply with that requirement. Even though he is in the probation period, he should not disregard this obligation. You should inform him about the policy.
Firstly, verify his resignation date and ensure he has received an acceptance letter for his resignation. Without these documents, he should not be allowed to leave at his own convenience. If he wants to resign immediately after obtaining the necessary approvals, he must pay one month's salary to the company. This amount can be deducted from his Full and Final (F&F) settlement.
Once he has resigned, he should not be granted any leave from the date of resignation onwards. Therefore, he should not be given any leaves during this period.
Best regards,
A. RAVIKANTH.