my endo op was a laporoscopy.. so i ended up having a day off work the day after the operation.. i was sore for weeks and weeks after but it turns out i had an ectopic pregnancy also so i was then off work for a week once they did another laporoscopy to get rid of the pregnancy.. sorta not the same situation but i hope it helps you...
i guess you should return to work when you feel ready.. if its not a real physical job id go back soon but everyone is different.