O-1 visa query

Will I be able to change employer while I'm on O-1 VISA during green card application?

to Leo:

Which category did you file under??? For NIW you are free to change employers regardless of the visa you hold.

to Howard:

I'm doing EB PERM. I heard there is an O1 transfer I need to do if I change employers?

to Leo:

Hey Leo I think you're mixing up the two. O1 is a visa, and it's different from a green card. Your visa doesn't affect your green card app (unless it's like J1 requirement stuff). As long as your company sponsors PERM, your GC app is fine. Now it you want to transfer O1 too, that's a separate process and you need to ask your company