finz, I understand the points you are making. And yes, in most cases a person can move from a physical job to a non-physical job when they have health problems. With me, I get pain in my knee and low back pain when I am standing and moving around and I get the Sciatica pain when I sit down. So my day consists of balancing the time I can stand and the time i can sit to get through the day. I cannot do this for much longer. When this job is over I will still be employed but I will be expected to be more active and I will just not be able to do it.