text: after changing employer on h1 transfer, when the new visa can be revalidated? i've changed my employer by transfering my h1 visa. i need to know when the new h1 needs to be revalidated? is there any time limit  for doing so? as such there is no time limit. what ur employer need to do that he has to file a transfer visa letter to us consulate, so that petition will be changed to new employer. u dont need to do anything.