My office is also like this, in large part because at 38, I am solidly in the youngest quintile, and we have a lot of folks who have two or more risk factors (age/underlying conditions), and also because the people coming to our office for service are retirees. Bluntly, we are a disaster waiting to happen given those priors. So we aren't going back at all until there's a vaccine - no more than 9 people can go to the office now, they have to clear it with their leadership and get permission because of all our precautions (which were borne out last week when someone who later tested positive had briefly visited the lobby and had contact with one person who was in the office, so now everyone who was in the office that day is known and we're all banned until they deep clean. It's intense, and I'm grateful.)