What legal action/recourse is there against an employer who is forcing you to take the jab as a condition of continued employment?

Start a competing business.
Looking for justice in the legal system is so 20th century.

I like the idea of suing these companies and think they should be.

That said, even if you win - are you really going to want to keep working at a place that you know is likely going to do whatever they can to make your life hell afterwords? Do you really want to keep working for a company that would force that on their employees? It also likely means than any future propaganda campaigns will be adhered to by your company.

I know most just want to be left alone. The people trying to force this won't let that happen. Either they win and you have to quit or get it. Or you win and they then try and use whatever excuse they can come up with to get rid of the troublemaker. Or at the very least would then have to keep working for people that you know hate you.