One employee got transferred from one group company(X Pvt Ltd) to another group company(Y Pvt Ltd). Previous employer have not paid any gratuity. Existing employer .i.e. Y Pvt Ltd sending the joining date with X Pvt Ltd to Actuary for making estimate of gratuity liability provision.
My question is
1) Since gratuity is payable by the Y Pvt Ltd, is it correct to take joining date with previous employer for gratuity calculation
2) If yes, Please tell me the reason?