I'm now working freelance (which has amounted to 3 days a week) mostly due to back pain that doesn't allow me to stand for very long, and I often need to for my job.

Financially it really sucks, but other than that it's really helped with my back pain, and although it's a very stressful job, I think the days off during the week really help my mental health.

I eventually did get intermittent FMLA at my previous (full time) job because my boss there used to give me a lot of grief about the time I took off for appointments (pdoc, therapist, pain doc), so I got it for appts. only. Very helpful. HR got all the info, but my boss was given no info on why I was granted FMLA.