I bet he will have a great time. My office is also very dog friendly. I got Calypso a month ago, and at 11 1/2 weeks I didn't want to leave him home alone for 8 hours. He comes to work with me everyday. I keep a bed, toys, food and bowls right in my office so I don't have to bring them daily.
LOL yesterday I left him home for the first time as my son would be home after school, and everyone wanted to know where he was and why I left him home.
They add lots of joy to the office. Everyone should be so lucky as to be able to bring their babies to work.