Job help

     I hurt enough at work to where I don’t know if I can really do it anymore. I’m a float, and they keep sticking me in a the more intensive areas. I want to ask my employer to not put me there anymore, as I would at that point just have to quit and find a new job, but I’m worried that if I tell them that: a. It won’t work and I will keep being put there, having to quit because of the pain b. They would fire me because I can’t do the more intensive work, and when they put me there, that’s my job. How could I best word my need to be put in another spot to my employer, while minimizing the risk of losing my job?

  I’m nervous and upset. I like my job, and will probably be going into the same field, but don’t know how I can physically manage it. I’m so sad and I don’t know what to do. It feels isolating, and makes me feel helpless. I don’t like this