I have taken mine to work many times, especially when she was very tiny, and on days when she is sick, and I can't leave her alone. I work for an adoption agency, and I have a very large office of my own where I can close the door. I have a couch and chair, and she will sleep on the chair. I have only taken her once when I actually had an appointment with clients in my office. She was pretty sick that day and just slept quietly in her kennel. I am not sure what my supervisors would say, but they work 50 miles away. My co-workers bring their babies (real) occasionally, and another co-worker has brought her dog one or two times. We are all pretty comfortable with it. However, I am afraid of the day I am told by my supervisor that I can't do it anymore.
