Thoughtful
Registered Users (C)
THe fact that you are a permanent resident is in itself a permission to work just like being a citizen. The conditions that apply to GC do not have anything to do with work (with the excemption of certain sensitive jobs like FBI). SO if you still have something written on your SS card after you got your GC, then go to the SSA and have them give you a new SS card free of any extra writings.
Like others already said, when your green card expires, your permanent residency DOES NOT expire and so your permission to work does not expire. To the best of my knowledge there is no law that says you have to renew your card (except that obvious fact that you cannot travel internationally and maybe some hard-nose employers).
Removing the "writing" on your card is really to avoid confusion for someone who is looking at it.
Like others already said, when your green card expires, your permanent residency DOES NOT expire and so your permission to work does not expire. To the best of my knowledge there is no law that says you have to renew your card (except that obvious fact that you cannot travel internationally and maybe some hard-nose employers).
Removing the "writing" on your card is really to avoid confusion for someone who is looking at it.