It will depend how long your stay in the hospital is and how you are generally feeling. I stayed three nights in hospital as I had bout with nausea on the second day. I took two weeks vacation time off work. I am a secondary school administrator. Three weeks would have been nice but two weeks was fine. My dr. indicated that I needed to be sure and walk, walk, walk. I am now six weeks out and feeling great with no complications. I have not told my boss but my secretary knows, family and a few other folks. It will get around.
If they are really interested I will give them the 411, it was a long and personal journey. A decision that took me ten years to make.