One person used to work in an MNC. He took a sabbatical and started preparing for UPSC.
While talking to him, he told me that when he was writing the mains exam in 2025 last year, the company called him and said he was fired and needed to pay back the retention bonus.
He asked for some time, but it was denied. In the same company, he had won the best employee award.
Always remember that no matter how much you sacrifice for the company, you will be fired the very first moment it finds you useless.