What’s the official day we all don’t show up to work en masse?

I saw a few posts a couple months back talking about a day where everyone doesn’t show up to work. When is this and are we going to give power back to the people and actually do this thing? Yea the unionizations are awesome, but imagine sending the message to the big guys that we can do whatever we want if we stand together. Don’t miss the chance to be part of something powerful.