If the government reaches the spending limit, it might need to shut down.
I think it should. In the mad scramble to find funds to continue, there's no telling how many billions of dollars would be discovered that was rat holed away, or stolen to fund some useless project.
Meanwhile, some workers would be out of a paycheck; sorta like the workers that found their jobs disappeared when the government destroyed industries with excessive regulations and taxes.
Oh the horror.