This is going to sound like crazy talk to most drivers, but as a sufferer of plantar fasciatis I have been using various footwear improvements to relieve my foot pain with ok results. Latest is custom inserts to stretch my arches, as recommended by my chiropractor.I am an avid reader and have been reading a book called Born To Run, about the Tarahumara indians in Mexico who have routinely ran 50-100 miles in sandals. They don't get foot or ankle injuries because their feet are stronger than ours. This is due to the fact we wear large cushioning shoes everywhere we go, which train our feet to become weak yet do nothing to reduce joint impact and in fact only ruin our running form. Not sure that I can incorporate this into the job, but it's been very informative and if you have foot pain or knee/ankle pain, I'd highly advise it to you as a good read.