I don't have stats on % of frivolous lawsuits for patents vs. employment matters. I'll be generous and stipulate there are fewer bogus employment claims. But it's not 0%.

In the U.S. legal system, you can sue anyone for anything, and it will cost them _something_ to make you go away. It's not hard to come up with _some_ claim that's not obviously absurd enough to get dismissed quickly. There are individuals who realize this --- as well as attorneys who have an economic interest in helping more people realize this.

So again, I grant that many claims have merit. But I don't think you can stipulate that every employee claim is automatically valid, i.e. that every company is automatically guilty of every claim against it. Sometimes companies suck. And sometimes so do employees. It's life.