It must be a nightmare there. In the quest for 2,500/week they are running 7 days a week with multiple shifts and now using a outside tent for extra production capability. Elon projects 10,000/week on some point. He needs to find some magic pixy dust to get that to happen. All this extra labour and overtime pay must be killing any gross margin on the model 3.
If it required an extra 100 hours of labor per car, and if the people were paid $20 an hour, that would only change GM by 4% on 3 LR PUP.
However, based on Elon's comment of about 50 stations in GA, that would imply 2 hours of labor per station...
So I think even with extra labor, they will be fine.