Can I go to work the next day after fat transfer? If not, why?

Amount of time for recovery depends much on the type of work and flexibility.  In general, liposuction and fat transfer recovery is quicker than most operations, however, there is always some post surgical discomfort requiring pain medications.  It is difficult to work, drive and be functional while recovering.An in-person exam with a
board-certified plastic surgeon is the best way to assess your needs and
provide true medical advice. Best of
luck. Dr. Michael Omidi  

I would take a few days off of work, like 3 days.  If you had the surgery on a Friday you could be back at work on a Tuesday

most patients will need a few weeks off after fat transfer to the buttocks. The liposuction sites and your buttocks will be sore for several days. You will still be on pain killers.  I also don't want you sitting for 2 full weeks so for a desk job you need to factor in that part as well.  Sitting for long peroids of time in the begning can reduce the amout of fat that survives after the surgery.  Make sure you talk with your PS about your plans for time off and you may need to postpone surgery until more recovery time is available.