Very heavy lifting after full tummy tuck?

I would like to know how long after surgery i would need off work? I work as a carer, heavy lifting job as some of our residents are not allocated to use a hoist, therefore 2 carers would need to be able to help a 10stone person who can hardly bare weight on their feet out of a chair and at night into bed. How long would i need to recover from surgery before i could do this sort of lifting again, I wouldnt want to cause any damage by lifting a full grown person. Thank you Kelly