It means, anyone can sue anyone for anything. Whether they can win is a different matter. And suing tobacco manufacturers clearly is NOT frivolous since they LOST their class action lawsuits. A lawsuit is frivolous when there is no valid legal basis on which to base the suit. Suing someone for not providing a benefit they're not legally required to provide could fall into that category. And if the state's laws say that the employer only has to follow their own policy in determining whether vacation days are payable at termination, then suing them for FOLLOWING THEIR OWN POLICY and refusing to break it (which is what they're legally required to do) is certainly not going to get you very far.
**P.S. I really hate it when people use the McDonald's coffee lawsuit as an example of frivolous litigation....read about the case, it was CLEARLY valid and the woman deserved every bit of the reduced award she got.
Well said! Thanks!