Henry Rosset is a former Dunder Miflin branch manager although which branch he managed is unclear. He later stepped down due to "family matters". He was manager for 9 years and 4 months according to Dwight and had held the title of least amount of time spent as manager until Jim Halpert stepped down from his co-manager position. Jim's record was likely broken after Deangelo, Dwight and Creed were manager and left.