This manager had a great idea: why not switch around her employee's hours just to keep them on their feet? Just kidding, that's not a great idea, it's a terrible one, obviously. Doing shift work is all well and good if you work the same 3-11 or 7-3 shift. As long as you're always working mornings or nights, it's easy to plan your life around it. But when you find yourself working nights and mornings back to back, it becomes an issue. And if you're stuck working any time of day, not knowing when…