Whether I can do freelance work while employed at my sponsoring company after obtaining an employment-based green card
I obtained a green card through employment-based immigration.
So I’m currently working at the sponsoring company, but a personal part-time opportunity came up — I’d like to know if it’s fine to separately work part-time at another company as well.
Of course. Just like any other green card holder or citizen, you can work anywhere, and it doesn’t matter if it’s not the sponsoring company. Even someone who received an EAD before obtaining their green card can freely work this way.