News Corp. said Fox Television Chairman Brian Mulligan resigned for personal reasons.
Mulligan will leave his job at the end of this month but will remain a consultant to the company, News Corp. said in a statement.
Mulligan oversees Fox Television stations, Fox cable networks and advertising sales, finance and relations with affiliate stations at the Fox Television network.
He resigned "to strike a better balance between my personal and professional life," according to the statement.
When he took the job this year, some Fox executives raised questions about his lack of experience in the areas he would oversee, such as sports programming, news and TV stations.