A liquor store worker in Philadelphia said his boss gave him the "ultimate gift" this spring when he decided to give him a kidney, WFMZ-TV reported.

"He gave me the gift of life," Rob Fenstermaker said of his boss, Brian DeAngelis.

DeAngelis said he decided to be Fenstermaker's kidney donor after watching him get worse every day.

"We as a store noticed that he was getting sicker and sicker," he said.

Other co-workers began talking about how they could help him. They discussed donating sick leave before talking about the possibility of a transplant.

Two co-workers tested but they were not a match.

Then DeAngelis decided to give it a shot.

"I kept passing all the tests," he said.

Once he found out he was a match for Fenstermaker, he said he never looked back.

The surgery was in May, and both men say they are doing well and have developed a unique bond.

Fenstermaker said he's grateful.

"He gave me the ultimate gift," he said.