Complete H1B employer transfer checklist. H1B portability lets you start at a new employer the day the petition is filed. Covers timing, documents, and portability rules.
What This Tool Shows You
H1B portability: start working at new employer on receipt notice date — before approval
Must have been in valid H1B status for at least 6 months
New employer files I-129 transfer petition — you keep your existing visa stamp
Do not resign until your new employer has filed and you have the receipt notice