If I submit my resignation and mention my last working day which is satisfying the notice period requirement, then is the resignation considered valid only when the company provides official acceptance of resignation and confirmation of last working day in writing? My employer verbally says I will have to wait till end of notice period to get official last working date and has not provided any date or timeline in writing. And also can my future company ask for such an official confirmation document before proceeding with further process? What to do if future employer insist on concrete information on LWD before proceeding further?
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