Can I switch employers while my PERM labor certification is pending?

Q: Does my priority date carry over if I switch employers before I-485 is filed?

Often yes, if your prior I-140 was approved, a new employer's I-140 can generally retain that earlier priority date even though the underlying PERM/I-140 itself must be refiled.

Q: Can I use AC21 portability before my I-485 has been pending 180 days?

No. The 180-day pending threshold is a hard requirement, portability isn't available before that point regardless of how far along your PERM or I-140 is.

By Pinal Dave | Last updated: August 5, 2026

TL;DR: No — a PERM labor certification is tied to one specific employer and one specific job, so it becomes invalid the moment you leave that employer before it's certified and used to file Form I-140. If you switch after I-140 approval and your I-485 has been pending 180 days or more, AC21 portability lets you move to a similar job without restarting PERM.

The evidence

The Department of Labor certifies PERM (Form ETA-9089) for a specific employer, job title, duties, and worksite after a recruitment process proving no qualified US worker is available. That certification doesn't transfer to a new employer or role — it's void the moment the underlying job relationship changes before it's used.

Stage when you switch employers	What happens to your case
Before PERM is filed	No loss — simply start fresh with the new employer
After PERM is certified, before I-140 is filed	Certification becomes unusable — new employer must file a new PERM from scratch
After I-140 is approved, before I-485 is filed	No portability protection yet — new employer generally must start a new PERM/I-140, though your priority date can carry over
After I-485 has been pending 180+ days	AC21 portability applies — you can move to a "same or similar" job/employer without a new PERM or I-140

Step-by-step: protecting your green card progress if you're changing jobs

Check where your case stands — PERM filed, PERM certified, I-140 approved, or I-485 pending — since your options differ sharply at each stage.
If your I-485 has been pending 180+ days, confirm your new job is in the "same or similar" occupational classification as the one in your approved I-140, then use AC21 portability instead of starting over.
If you're earlier in the process, expect the new employer to file a fresh PERM recruitment and I-140 — but your original priority date usually carries forward to the new I-140 if the prior one was approved.
Keep your priority date documentation — the approval notice from your prior I-140 is what lets a new employer's I-140 retain your earlier priority date.
Talk to an immigration attorney before resigning — timing your departure around the 180-day AC21 threshold can be the difference between preserving years of progress and starting from zero.

FAQ

Does my priority date carry over if I switch employers before I-485 is filed? Often yes, if your prior I-140 was approved — a new employer's I-140 can generally retain that earlier priority date even though the underlying PERM/I-140 itself must be refiled.

What counts as a "same or similar" job under AC21 portability? USCIS looks at job duties, required skills, and salary level compared to the job described in your approved I-140 — an exact title match isn't required, but the core role should be comparable.

Can I use AC21 portability before my I-485 has been pending 180 days? No. The 180-day pending threshold is a hard requirement — portability isn't available before that point regardless of how far along your PERM or I-140 is.