[7] Fosslien began her career in the tech industry, where she served as the chief of staff at Parliament,[8] and at Genius, focusing on rebranding and diversity inclusion efforts.
[8] However, her passion for illustrating and exploring the emotional dynamics of the workplace led her to co-author two books with Mollie West Duffy.
[6][9] In 2019, Fosslien co-authored No Hard Feelings: The Secret Power of Embracing Emotions at Work with Mollie West Duffy.
[7][16] The book was inspired by their own experiences with burnout, chronic pain, and the loss of loved ones, and it emphasizes the importance of sharing and acknowledging difficult emotions.
[15][8] Liz Fosslien resides in the San Francisco Bay Area, where she balances her professional life with personal projects, including her work as an illustrator.