That is the standard sentense for a permanent job. I think you can say yes to the question. The real question here is whether saying so benifits your NIW pertion. I am not good at it. My previous neighbor filed NIW, EB11,EB12 arround the same time. I asked him the question. He told me that he say yes to the quesiton. He got them all approved. My other friend filed a NIW when he was a student and got an approval too. I think that it does not matter that much to NIW. However, someone did say that having a permanent job boost your chance a little bit. However, do not rely on this kind of anecdote. I completely agree with 網友 WorthIt focus on NIW.