What happens to donor after liver transplant?

Minor postop pain: Usually well selected donors (i am assuming you mean living donors) have few complications. The amount of liver removed typically regrows and the person doesn't miss it. Major complications are not common, but any operation causes some postoperative pain, time off from work, etc. Your surgeon can be more specific about the type of incision, etc.

Post-op recovery: A living liver donor must recover from a fairly big operation. The remaining piece of the donor's liver should regenerate a normal size liver in several weeks. Complications from the liver operation can also occur. The donor must commit to medical follow-up for at least 2 years (required by the gov't). If the liver was "allocated" through the unos waiting list, the donor was deceased.

Depends: Deceased donors are buried or cremated. Living liver donors go on, and a significant amount of removed liver will regenerate from the remaining liver.