I was fired for being sick. Even though I always have 40 plus hours on my time card. I also have chronic passing that has not affected my job

When you say you were fired for being sick, how did it happen? Who did and said what?

What is chronic passing?

What is your question?

Unless you have some sort of specific contract, there probably isn't much you can do.

Of course, you didn't really ask a question or state where you live so giving a real answer isn't all that easy.