I generally instruct women that they will be walking upright with minimal discomfort at 2 weeks. Most of my patients are comfortable within a week, but I prefer not to "rush" things with surgery and recovery. 10 days is probably sufficient, but it does not provide much leeway in terms of interpersonal postoperative recovery variability.
Ten to fourteen days is usually enough time to recovery from a tummy tuck when returning to non-physically strenuous activities. We are all very unique in our response to pain and recovery, but if one is motivated and keeps active throughout the recovery process, I think that you will be able to get back to your job. I hope all goes well for you!