Re: "This whole scheme is a pretext for doing collective punishment..."
As noted in the article, they're in violation of the terms of their liquor license.
Because people need to have a job to live, place of employment should be a protected characteristic; if this sort of thing is legal, then that just means there is an urgent need to amend the laws so that it is strictly illegal.
A suitable penalty would be to allow her to collect punitive damages of the sum total of the firm's assets. That would ensure no other company would think about behaving this way in future.
Biting the hand that feeds IT
