Are you getting called in? Why? The details actually matter. Yes, the Shirt calls people in. Sometimes it's for really good reason.
eg it was the Shirt who ended up notifying H that he had to fly home to see his mom before she died since I had called red cross while he was asleep, and everything was set in motion before he was awake. It was the Shirt who had to deliver the plane tickets to his desk.
Sometimes it's because there's been report of a behavior that needs some form of resolution, whether from gossip or real concern.
It could be anything. I've seen spouses called in for anything from the SM receiving a big award to an ass chewing because the SM is frequently late to issues with finances. Your husband should have some idea of why his Shirt would want to see the two of you.