Grandparents generally need permission to work and be legally employed in the United States by American employers. But foreigners with green cards or diplomats do not need permission. The green card holder, given his legal status as a permanent resident of the United States, is permitted to work in the United States as long as he maintains that status. A foreign diplomat, despite working in the United States, does not need him because his country’s government employs him.
How do you get a work permit?
A work permit (known formally as a work authorization document, or “EAD,” which is issued in the form of a plastic card) can be obtained in any of the 5 following ways: