Eligibility for H4-EAD when changing employers after I-140 is approved

Will my spouse(H4) be eligible to apply for EAD if my I-140 is approved from old employer, and I switch jobs, Assume the new employer has not filed for the PERM or I-140 yet and the old employer has not revoked the previous I-140 petition?

Also, will the situation change if same H1B applicant changes job after spouse gets her H4-EAD?

“yet and the old employer has not revoked the previous I-140 petition?”

As long as this above statement holds good, your spouse’s EAD is valid.

BTW. while your old employer didnt revoke the i140, your new employer can quickly file your new LCA and i140 (at that point you would have two valid i140s, you are rock solid from i140 point of view)

Thank you so much for the prompt response!