Depends what kind of office... they're very appropriate in DH's office. He's a farmer. *wink* They'd be just as appropriate in any of the other agriculture-related offices in the area as well. Assuming you mean a stereotypical big city office though, yes I think boots can be perfectly appropriate if they're a style to match the rest of the outfit. There are lots of dressy boots, both with and without heels on the market today.