Can you work outside US if you are a green card holder?

If you're an immediate relative of a US citizen and stay outside US through consular processing you can become a permanent resident. When USCIS works with the Department of State to issue a visa on an approved Form I-130 petition when a visa is available its referred to as Consular processing. You may then travel on the visa and will officially become a permanent resident when admitted at a US port of entry.