I'm going to add my .02 to this, because I have gone through it myself.
The OP stated she isn't doing it to lose weight, she has loose skin that is a problem. If she was doing it to lose weight, GBS or lipo would be involved. It is none of anyone's dang business on here WHY she wants this surgery. She wasn't asking for your opinion of tummy tucks. What she asked was regarding time off and recovery from surgery.
I had GBS and lost 150 pounds. Got preggo with my daughter, gained 50 pounds, and lost that. I know ALOT about loose abdominal skin. It is damn UNCOMFORTABLE. I can handle the bat wings on my arms, and whatever else I have, but the tummy was completely different.
If bad enough it can cause rashes, chafing, and some pretty nasty back pain from pulling you forward.
I had 17 pounds of loose skin removed from my lower abdomen and a tummy tuck when my daughter was almost 2. I paid for this out of pocket. Did I do it for cosmetic reasons? No. You can easily tuck the skin into some jeans and people would never know you had it. I did it because I was sick of my back hurting, getting occasional rashes from rubbing, elastic, and tops of jeans causing me skin irritation.
All that being said...........The recovery is hard. First week is awful. Lots of pain, and I felt like I was in a wetsuit from the surgery itself and the general swelling from trauma. You need at least a month off to recover. If you are doing floor nursing, I would suggest even more. It was a good 3 months before I could have done hospital work again.
I would definitely wait until you have sufficient vacay time, and I'm not sure if you would qualify for FMLA for this, though you might. You would have to look into it. Just do not do it until you have sufficient time to recover. Your body will thank you.
Also, I would have the surgery again in a heart beat. Hell of a recovery, but worth it's weight in gold not to have to deal with all of the side effects and problems of the excess skin I had.