Jay Y. Lee, the vice chairman of the South Korean conglomerate Samsung, has been sentenced to 30 months in prison by a court in his country.
Lee was again on trial for bribing an assistant to former President Park Geun-hye.
52-year-old Lee was already sentenced to five years in prison for bribery in 2017.
The sentence was sold after he appealed, making him a free man again after a year.
South Korean law states that only imprisonment of up to three years can be suspended.
Longer prison sentences must be served unless the president pardons.
The case was returned by the Supreme Court to the Supreme Court in Seoul, which passed its judgment on Monday.
Lee can go back to the Supreme Court, but because the case has already appeared there before, the chance of success is low.
Lee is the son of former chairman Lee Kun-hee.
He ended up in hospital in 2014 after a heart attack.
Since then, the younger Lee has been at the helm of Samsung, although not formally filling the position of chairman.
Lee passed away in October.