"George has been telling people that he expects everyone to be back at work on Monday, and he expects to join them," Howard Rubenstein, his publicist, said hours before Steinbrenner's release from Sarasota Memorial Hospital on Sunday night.
Hospital spokeswoman Lyn Cassan said Steinbrenner,73,was picked up by family members.
Steinbrenner fainted during a slide show at a church service for football great Otto Graham on Saturday. The presentation, prepared by Graham's grandchildren, featured pictures of Steinbrenner and Graham together.
Sarasota Herald-Tribune columnist Doug Fernandes was about 20 feet away when Steinbrenner fell.
"He went to reach for a chair but he missed, and he went face-first into the carpet," Fernandes said. "People were stunned. They started loosening his tie and his collar. He was out for a few seconds. By the time they wheeled him out, his color had returned."
Graham, a longtime friend of Steinbrenner, died Dec. 17. The Hall of Fame quarterback was 82.
Dr. Andrew G. Boyer, Steinbrenner's personal physician, said in a statement that Steinbrenner recovered a few minutes after collapsing
"To be sure that it was nothing more than a fainting spell, he has had a very extensive cardiac and neurological workup," Boyer said. "All the diagnostic studies were normal. He's feeling well and his general health is excellent."
Cassan said Steinbrenner spent part of Sunday watching football games in his room, but couldn't wait to leave.
"He wasn't very happy sitting in a hospital bed," Cassan said.
Boyer said that Steinbrenner said he had never passed out like this before, and he thinks the stress of being at a friend's memorial service could have been a factor.
"Sometimes in a stressful situation, you just pass out," Boyer said.
Steinbrenner grew up in Cleveland and later became longtime friends with Graham, the Browns' star quarterback from 1946-55. They were golfing partners, attended banquets together and helped each other with charity events.
Steinbrenner, who has owned the Yankees since 1973, lives in Tampa, about 60 miles from Sarasota.