I work for a small manufacturing company in IT and I could absolutely see the plant workers for us striking, or at least they should strike, in the near future. I'm imagining the scenario where that happens and I have to tell my boss that I won't cross the picket line, but I think the first thing he'd ask me is to work from home.
I'm fairly certain the answer is yes, it is, but I felt it was an interesting question to ponder. I'd also like to see any arguments that might help me convince my boss that just because I'm not physically crossing the line doesn't mean I'm not crossing the picket line.