Warren Lieberstein

Warren Lieberstein is an American writer and producer known for his work on popular TV shows such as Carpoolers and The Office. Born on September 20, 1968, he is the younger brother of Paul Lieberstein, the former showrunner and actor of The Office, and the brother-in-law of Greg Daniels, the show's developer and original producer. Lieberstein often collaborates with his writing partner Halsted Sullivan. He has also contributed to other TV series including Hype, All of Us, Second Time Around, Modern Men, and Carpoolers. Joining The Office's writing staff in its fifth season, Lieberstein became a producer in the sixth season. He was recognized for his writing on The Office with a Writers Guild of America nomination.More