The healing and recovery time differs from person to person, and of course it would also depend on how extensive the
surgery will be,depending on how deep the
abscess is located..
I am really sorry if I can't be of much help,but I would advise you to ask your surgeon all the questions you have asked here, and I am sure that you'll be much better informed regarding drainage,healing,and especially when you can go back to work since your job is physically demanding.