Apple Inc chief executive Steve Jobs is back at work following medical leave lasting almost six months.
The company said on Monday he will work at least initially from home for a few days a week.
Mr Jobs, 54, underwent a liver transplant in Memphis, Tennessee, while on leave.
According to the company, he has remained involved in strategic decisions at Apple while away and has been seen in recent weeks at Apple's headquarters in Cupertino, California.
He was treated for a rare form of pancreatic cancer in 2004.
In January, after initially blaming his noticeable weight loss on a hormone imbalance, Mr Jobs announced he was taking medical leave until the end of June, saying his health-related issues were "more complex" than originally thought.
Chief operating officer Tim Cook handled Apple's day-to-day operations while Mr Jobs was on leave.