Ken
Not sure, but let me try. My wife is on disabily due to being smashed up in a car wreck (not her fault). Her back is part of the problem as her pelvis was crushed and her surgeon suspected she had hairline fractures in spinal area for which no treatment but contributes to the pain etc. Now in her case, someone could easily spend a little time with her and ask as you did. Later that day she may not find a "comfortable" position be it sitting, standing, lying down and be in constant flux to find that temporary relief. So while she can be productive, it's really not in a manner conducive to employment. She rarely even mentions pain let alone complain, but I can tell by watching. She gets private disability, but that is reduced dollar for dollar by her SS and her last check wont be a penny more than her first. Oh and just for comparison, her lifetime SS disability from time approved until age 65 wont even total what many White House staffers get for ONE year.
That sai, I've also known some pikers and I wish there was a way to fix em.