What would you do if this showed up on your bill after eating at a restaurant?

So, I saw this recently, it was not mine, restaurants here aren't stupid enough to do illegal charges like this. But it appears that at a restaurant in California, you're forced to pay a 4% fee on your meal for health insurance which is absolutely something that the employer should cover, NOT, the customer.
What would you do if this showed up on your bill after eating at a restaurant?
What would you do if this showed up on your bill after eating at a restaurant?
Post Opinion