In most at-will-employment countries/states you can just stop showing up and the worst they can do is fire you. Sure, you’d loose your unused holidays and potential bonuses, but if the company is too broke to even pay your salary did you really expect to get those bonuses anyway?

Pretty much and the thing is, businesses that don't remember their employees are the ones there every day making them their money aren't worth working for. Even when/if things get better, the treatment won't change. There'll be something else. It's not like this company is some upstart, starry eyed and hopeful first time startup or anything.