Why do you think this will be a problem for VCC?
It's not. I can assure you.
I was under the impression that some ground staff work Monday to Friday and get every public holiday day off. It should be interesting to see how some of them will be feeling over working Christmas.
Bring on the ballot and the strike. Let's see how WW, who obviously wants to settle this dispute (according to his crappy proposal...) can handle it.