You may return to your work 2 to 4 weeks after undergoing gynecomastia surgery. You will have to refrain from using your shoulder joints for the first 5 to 7 days. Thereafter movement at the shoulders is gradually started and around 2 after the procedure, you will be able to go about doing day-to-day work. You will be able to go back to your exercise routine after a month. Now depending upon how physically demanding your work is you may resume work within 2 to 4 weeks.