Norio Ohga, Sony Corp.'s chairman of the board, said Tuesday he will step down for health reasons.
The move takes effect Wednesday, his 73rd birthday. Ohga will assume the position of honorary chairman on Thursday.
Ohga, who took on the current post in 2000, became president and chief operating officer in 1982 and chairman and chief executive officer in 1995. He joined Sony in 1959.
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