2 moles on back getting excised, how long before returning to work as police officer?

Administrative light duty immediately. Heavy physical duty 2 weeks. I would suggest applying a tape (e.g. micropore tape) over the scar for 3 months or more. This will give it some additional strength. It is important to know that most scars in the back will stretch no more how careful you are.

It should take no more than a few days to return to normal work duties. If there is significant tension on the wound, you may need longer recovery times. Best, Dr. Karamanoukian Los Angeles

If these are done with shave excision/scoop you can go back to work the next day.  I suggest speaking to your physician.  If you use sutures you can go back to work but risk the sutures ripping, I would suggest waiting 3-5 days before if you do that.  Best, Dr. Emer.