 After appearing several times as a guest star in the podcast, Writing Excuses, she became a full-time cast member at the start of their sixth season in 2011.Kowal is also a voice actor, having recorded audiobook versions of books written by authors such as John Scalzi, Seanan McGuire, Cory Doctorow and Kage Baker.In July 2018, after criticism  that many authors who were Hugo award finalists at the August 2018 World Science Fiction Convention (Worldcon) had not been selected to participate on that year's Worldcon panels, Kowal took over as Programming chair and rapidly "repaired and replaced" many Programming sessions, working with a large and diverse team to do so.