Thank you for the question. It is important to note that a mommy makeover is not the same operation for everyone. Your recovery will be impacted by the procedures that are needed and the rate at which you recover from them (not the same for all). In my practice patients who have jobs that do not require heavy work return to work within 2 to 3 weeks. If you are in a job that requires heavy or demanding work I would recommend 5 to 6 weeks of recovery before attempting to return to work.
In any case make sure that you consult with a Board Certified Plastic Surgeon and follow their recommendations. They will have had the advantage of what was done and therefore will be able to better guide you.