What is the purpose of wearing only underwear? By that point, you might as well just be fully naked. :) People should wear what they want. If you're comfortable in thousand dollar shoes, wear them. :) I don't care, or even pay attention to such things most of the time, unless someone is dressed very colorful (which I like), or looking like a complete slob. Btw, if you wish to work in a nude office, they exist. :)) http://www.officechai.com/stories/this-office-went-naked-for-a-month-as-a-social-experiment-nsfw/