Under the title "Susie", this was shown again in syndicated reruns in the 1960's, sometimes in rotation with "The Ann Sothern Show" (when the entire series "Susie" ended, episodes of "The Ann Sothern Show" would begin, then after they had ended, "Susie" began again, from its first episode to its last).
In a very unusual move, this series had its entire main cast move intact into a new show, the Ann Sothern Show. While renamed, the characters were much the same: Don Porter as her male boss, Ann Sothern as the capable second in command, Ann Tyrrell as her sidekick & confidant, and the wise cracking Jesse White. The biggest change was the setting, from a New York talent agency to a New York upscale hotel. "Private Secretary" was produced by Jack Chertok Productions, while "The Ann Sothern Show" was a Desilu Production in association with Ann's own company, Anso Productions. Both of Sothern's characters, Susie & Katie, appeared with Lucy Ricardo. In much the same manner, Lucille Ball would later morph her own various sitcom casts into different settings & characters.