Her breakthrough as an actress came in 1987.
But it was in 1985, while appearing in a musical, that she was spotted by casting agents, who placed her as Mary Tyler Moore's feisty coworker, Jo Tucker, in Mary, a short-lived comedy series.
By the time her most extended running series ended, Sagal was famous and in-demand.
She also won the Best Vocal Ensemble in Futurama from Behind the Voice Actors Awards, five times.
In her role as Gemma Teller in Sons of Anarchy, Sagal received a Golden Globe Award for Best Performance.
Katey Sagal grew in Los Angeles, California, to a family of showbiz people.