This is an issue I have in work as well. It's not that I have chronic pain in my case. It is just that I do things slower than others. Employers do not seem willing to accomodate people with different limitations. I mean, look at all of the jobs ads specifying that you have to be able to hear well, see a full spectrum of colors, lift heavy weights, etc. Where do those of us who want to work but are physically or cognitively limited in what we can do go?

If pain is your only issue, I do think you should consider maybe applying for secretary and administrative type jobs. Something that doesn't require physical labor.