H1b第七年延期要在H1过期前多久开始？

来源: 于 2007-05-09 09:06:24 [旧帖] [给我悄悄话] 本文已被阅读：次

My H-1b will expire in Jan 2008, and now I am doing H1b transfer. Do I need to file an extension application (I-539) with the transfer?
or I can do the extension later?

Thanks