HRA As per Income Tax Act - If employee transfers - Can he avail HRA exemption for both places

Dear All, We have one query of house rent exemption of employees if he/she transfer from one place to another place or newly joined in organisation.
If employee transfers :- Can he avail HRA exemption for both places (A) for his family rent payment to earlier posting place (B) For rent payment to present place.
As per Income Tax act what is the rule to get rent exemption for both places.

Hi Rakesh,
HRA can be claimed from both places from both employers only for such duration and only for the places which employee used. He / she can not claim HRA for parents rent.
New co. will consider HRA from the month of joining.