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Warren Keith Lieberstein is a respected American television writer and producer, best known for his work on the critically acclaimed comedy series The Office. Born on September 20, 1968, in Westport, Connecticut, Warren has built a strong reputation in the entertainment industry, often working alongside his writing partner Halsted Sullivan. Beyond The Office, he has contributed to shows like Carpoolers and films such as Sleepover. He is also recognized as the brother of Paul Lieberstein, the actor and producer who portrayed Toby Flenderson in The Office. Away from his career, Warren is the father of Isabel Ruby Lieberstein and currently lives a private yet creative life at age 56.
| Field | Details |
|---|---|
| Full Name | Warren Keith Lieberstein |
| Known As | Warren Lieberstein – TV Writer & Producer |
| Date of Birth | September 20, 1968 |
| Age (as of 2025) | 56 years old |
| Place of Birth | Westport, Connecticut, United States |
| Nationality | American |
| Parents | Stanley Lieberstein and Judith Lieberstein |
| Siblings | Paul Lieberstein (actor/writer, The Office), Susanne Daniels (TV executive) |
| Nephew | Owen Daniels |
| Spouse(s) | Angela Kinsey (m. 2000–div. 2010), Audrey Wauchope (m. 2016–present) |
| Children | Isabel Ruby Lieberstein |
| Profession | Television Writer, Producer |
| Famous For | Writing and producing The Office; Co-writing with Halsted Sullivan |
| Notable Works | The Office, Carpoolers, Sleepover |
| Years Active | Late 1990s–present |
| Current Status | Active in TV writing, living a private life with family at age 56 |
Early Life and Family Background
Birth and Childhood in Westport, Connecticut
Warren Lieberstein was born on September 20, 1968, in Westport, Connecticut, a small but culturally vibrant town in the United States. Growing up in Westport gave him access to excellent schools, community events, and a nurturing environment for creativity. The Lieberstein family valued education, storytelling, and humor, all of which influenced Warren’s future career as a writer. Surrounded by supportive parents and siblings, he developed a natural talent for observing everyday life and turning those observations into witty, relatable stories that later shaped his work in comedy television.
Parents: Stanley and Judith Lieberstein
Warren was born to Stanley and Judith Lieberstein, who raised him with strong family values and encouragement. His parents provided a stable and loving home where creative interests were appreciated. While not directly involved in Hollywood, Stanley and Judith influenced their children to pursue their passions wholeheartedly. Their encouragement fostered a home environment where ideas were freely discussed, something that would inspire Warren’s sense of dialogue and character development in writing.
Siblings: Paul Lieberstein and Susanne Daniels
Warren grew up with two siblings who also achieved great success in the entertainment industry. His brother, Paul Lieberstein, became a well-known writer, producer, and actor, most famous for playing Toby Flenderson on The Office. His sister, Susanne Daniels, built her career as a highly respected television executive, having served as President of Entertainment at MTV, Lifetime, and later YouTube Originals. With such a talented family, it’s clear that Warren was surrounded by creative energy and ambition from a young age, which motivated him to enter the world of television writing.
Family Connection to Hollywood and Television
The Lieberstein family’s connection to Hollywood runs deep. While Warren carved out his own career as a writer and producer, his siblings also influenced popular culture in meaningful ways. Paul’s leadership on The Office and Susanne’s impact on the television industry positioned the Liebersteins as a family deeply connected to American entertainment. This strong network not only inspired Warren but also gave him opportunities to grow in a field where creativity and collaboration are essential.
Education and Early Influences
Schooling Years and Academic Path
Details about Warren Lieberstein’s formal education remain private, but his upbringing in Westport, Connecticut, suggests he benefited from high-quality schools that emphasized creativity and literature. During his academic years, Warren developed an interest in storytelling, humor, and character development. These formative experiences sharpened his observational skills, which later became essential in crafting dialogue-driven comedy. His natural curiosity and wit were signs of the career he would eventually pursue.
Early Passion for Writing and Storytelling
Even before entering the entertainment industry, Warren displayed a passion for writing and storytelling. Influenced by his siblings’ ambitions and the cultural environment around him, he often engaged in creative writing projects, sketches, and early experiments with humor. This interest gradually evolved into a professional pursuit, as he sought to turn his love for comedy and everyday observations into a career. Warren’s journey reflects how childhood passions, when nurtured, can transform into lifelong professional success.
Career Beginnings
First Steps into Entertainment Industry
Warren Lieberstein’s early career saw him exploring different avenues of writing and production. Like many aspiring television writers, he started by contributing to smaller projects and honing his craft behind the scenes. His persistence and commitment to storytelling allowed him to break into the competitive entertainment industry. These initial experiences provided him with the skills and confidence to take on larger roles in television writing.
Writing for Comedy and Television
By the late 1990s and early 2000s, Warren began making his mark as a comedy writer. He focused on relatable humor, witty character interactions, and authentic storytelling, which aligned perfectly with the style of American sitcoms. His early work eventually led to writing opportunities for shows such as Carpoolers and, most significantly, The Office. This period of his career marked the beginning of his recognition as a talented television writer who could balance humor with heart.
Breakthrough in Television Writing
Writing for Carpoolers
One of Warren Lieberstein’s first notable television projects was ABC’s sitcom Carpoolers, which aired during the 2007–2008 season. Though the show was short-lived, it gave Warren valuable experience writing for network television. The series, which centered on the lives of four suburban men sharing a daily carpool, relied heavily on comedic timing and everyday humor—qualities that matched Warren’s writing style. His contributions demonstrated his ability to capture character-driven comedy, even in unconventional settings. Carpoolers may not have lasted long, but it was a stepping stone that helped Warren sharpen his skills for his next big opportunity.
Success with The Office
Warren Lieberstein’s most prominent career milestone came when he joined the writing team of NBC’s hit sitcom The Office. The show, which aired from 2005 to 2013, became a cultural phenomenon thanks to its mockumentary style, relatable workplace humor, and sharp writing. Warren contributed as both a writer and producer, crafting episodes that balanced awkward humor with heartfelt storytelling. His work on The Office not only showcased his comedic strengths but also solidified his reputation in Hollywood as a skilled television writer capable of delivering consistent, audience-pleasing content.
Partnership with Halsted Sullivan
Warren frequently collaborated with fellow writer Halsted Sullivan, forming a creative partnership that extended through multiple projects. Together, they co-wrote episodes of The Office, bringing fresh ideas and clever dialogue to the show’s later seasons. Their teamwork ensured that the series maintained its humor and originality, even as it evolved over time. This partnership became one of Warren’s most valuable professional relationships, providing a platform for consistent creative output in television comedy.
Warren Lieberstein and The Office
Joining the Writing Team
When Warren joined The Office writing staff, the series was already gaining momentum as one of NBC’s flagship comedies. His addition to the team enhanced the show’s ability to blend humor with authentic workplace dynamics. His writing brought nuance to characters and introduced comedic elements that resonated with both critics and fans. The collaborative environment of The Office writers’ room suited Warren’s skills perfectly, allowing him to thrive in a team of talented creatives.
Episodes Written and Contributions
Alongside Halsted Sullivan, Warren Lieberstein co-wrote several episodes of The Office, particularly in its later seasons. Their episodes contributed to the show’s ability to sustain humor and emotional depth, even as storylines expanded and characters developed. While not as widely known as his brother Paul Lieberstein, who portrayed Toby Flenderson, Warren played an equally important role behind the scenes in shaping the comedy that millions of fans continue to enjoy worldwide.
Impact on the Show’s Legacy
The Office is now considered one of the most iconic sitcoms of the 2000s and 2010s, and Warren Lieberstein’s work helped cement its place in television history. His scripts contributed to the show’s ability to balance laugh-out-loud moments with meaningful character development. The enduring popularity of The Office, including its massive streaming success on platforms like Peacock and Netflix, ensures that Warren’s contributions remain relevant to new generations of viewers.
Other Works and Contributions
Writing for Other Television Series
Outside of The Office, Warren Lieberstein worked on several other television projects, continuing to build his reputation as a versatile writer. He wrote for shows that showcased situational humor and relatable characters, keeping his style consistent across different formats. His willingness to explore varied comedic angles demonstrated his adaptability in an ever-changing entertainment landscape.
Work on the Movie Sleepover (2004)
Warren’s contributions were not limited to television. He was also involved in the 2004 teen comedy film Sleepover, which followed a group of friends navigating a night of challenges and adventures. While the film targeted a younger audience, Warren’s involvement highlighted his range as a writer, capable of connecting with different demographics. Sleepover may not have reached blockbuster status, but it added another dimension to his career portfolio.
Personal Life and Relationships
Marriage to Angela Kinsey (2000–2010)
In 2000, Warren Lieberstein married Angela Kinsey, an actress best known for her role as Angela Martin on The Office. Their relationship connected him even more closely to the world of television. The couple welcomed a daughter, Isabel Ruby Lieberstein, during their marriage. Although Warren and Angela divorced in 2010, they remained committed to co-parenting and maintaining a respectful relationship, prioritizing Isabel’s well-being. Their marriage and subsequent separation attracted public interest, given their shared connection to The Office.
Daughter Isabel Ruby Lieberstein
Isabel Ruby Lieberstein is Warren’s daughter with Angela Kinsey. Born during their decade-long marriage, Isabel remains one of the most important aspects of Warren’s personal life. As a father, Warren is deeply devoted to her upbringing and privacy. While Isabel is sometimes mentioned in the media due to her parents’ fame, Warren and Angela have worked hard to keep her life out of the spotlight. His role as a father highlights his dedication to family alongside his professional achievements.
Marriage to Audrey Wauchope (2016–Present)
In 2016, Warren Lieberstein married Audrey Wauchope, a television writer and producer known for her work on shows like Crazy Ex-Girlfriend. Their marriage reflects a partnership built on shared creative interests and mutual respect. Audrey’s career in the entertainment industry aligns with Warren’s, making them a couple who understand the unique challenges and rewards of television writing. Together, they continue to live and work in a world that values creativity and collaboration.
Legacy of Family in Entertainment
Brother Paul Lieberstein (The Office Showrunner)
Warren’s brother, Paul Lieberstein, is one of the most recognizable figures from The Office. Known for playing Toby Flenderson and serving as the showrunner for several seasons, Paul’s success in both acting and writing parallels Warren’s career in television. The brothers’ shared involvement in The Office highlights the Lieberstein family’s strong influence on American comedy.
Sister Susanne Daniels (TV Executive)
Warren’s sister, Susanne Daniels, is a highly respected television executive who has held leadership positions at major networks, including MTV, Lifetime, The WB, and YouTube Originals. Her ability to shape programming and discover new talent adds another layer of prestige to the Lieberstein family’s contributions to entertainment.
Nephew Owen Daniels
Adding to the family’s creative legacy is Owen Daniels, Warren’s nephew, who has also pursued opportunities in television. This multi-generational involvement underscores how deeply embedded the Liebersteins are in the entertainment world, with each family member contributing uniquely to the industry’s evolution.
Achievements and Recognition
Influence on American Television Comedy
Warren Lieberstein has made a lasting impact on American television, particularly in the realm of comedy. His writing style blends observational humor with genuine character development, making his scripts relatable and entertaining. Through shows like Carpoolers and especially The Office, Warren contributed to some of the most memorable sitcom moments of the 2000s. His ability to write for ensemble casts and adapt to evolving storylines showcases his versatility and dedication to the craft.
Critical Reception and Industry Impact
While Warren may not be a household name like some actors or showrunners, within the industry he is respected as a skilled and reliable writer. Critics and colleagues alike praise his contributions to The Office, a series often regarded as one of the greatest sitcoms of all time. The show’s enduring popularity on streaming platforms ensures that Warren’s work continues to entertain millions worldwide, reinforcing his influence on modern television writing.
Current Life and Work
Life at 56: Continuing Career in TV Writing
As of 2025, Warren Lieberstein is 56 years old and continues to work in television, often collaborating with his wife Audrey Wauchope and longtime partner Halsted Sullivan. While he maintains a relatively private lifestyle, he remains active in the entertainment industry, contributing his experience and talent to new projects. His career reflects not only longevity but also an ability to adapt to changing trends in comedy and television.
Future Projects and Creative Outlook
Though specific upcoming projects have not been widely publicized, Warren’s creative track record suggests that he will remain a valuable contributor to television writing. With the industry embracing diverse storytelling and new formats, writers like Warren—who excel in crafting authentic, character-driven narratives—are more important than ever. His future work is likely to continue blending humor with heartfelt storytelling, appealing to both new and longtime audiences.
Conclusion – Warren Lieberstein’s Lasting Legacy in TV Writing
Warren Lieberstein’s biography reflects a life dedicated to storytelling, creativity, and family. Born in 1968 in Westport, Connecticut, he grew up in a household that valued education and ambition. From early steps in comedy writing to breakthrough roles on Carpoolers and The Office, Warren established himself as a talented television writer and producer. His personal life, including his marriage to Angela Kinsey, fatherhood to Isabel Ruby Lieberstein, and later marriage to Audrey Wauchope, highlights his role as both a creative professional and devoted family man. Today, at 56, Warren continues to influence American television, carrying forward a legacy of humor and heart that will resonate for years to come.
FAQs About Warren Lieberstein
1. Who is Warren Lieberstein?
Warren Keith Lieberstein is an American television writer and producer, best known for his work on The Office and collaborations with Halsted Sullivan.
2. What shows has Warren Lieberstein written for?
He has worked on Carpoolers, The Office, and contributed to projects like the film Sleepover.
3. How is Warren related to Paul Lieberstein?
Warren is the younger brother of Paul Lieberstein, who portrayed Toby Flenderson and served as showrunner on The Office.
4. Was Warren Lieberstein married to Angela Kinsey?
Yes. Warren married actress Angela Kinsey in 2000. They divorced in 2010 but share a daughter, Isabel Ruby Lieberstein.
5. Who is Isabel Ruby Lieberstein?
She is Warren’s daughter with Angela Kinsey. Isabel was born during their marriage and remains central to his personal life.
6. What is Warren Lieberstein doing now?
As of 2025, Warren continues to work in television writing, often collaborating with Audrey Wauchope and Halsted Sullivan.
7. How old is Warren Lieberstein in 2025?
Born on September 20, 1968, Warren Lieberstein is 56 years old in 2025.
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