When I was working fast food and on my feet for 8+ hours a day my feet hurt like crazy, it doesn't help that I've got flat feet. My main way to reduce the pain was insoles, but working 40+ hours a week, I went through 2-3 pairs a month, if I ever forgot my insoles my feet would hurt to the point I wouldn't be able to walk normally, I had to either walk on my heels or sides of my feet, and along with the foot pain came back pain. With the combined pain I was downing a large bottle of advil a month just to stay standing. But now I no longer work fast food, so my feet thank me.