Fields began her career as a singer. She joined Ronnie Spector as a Ronette in 1973 and recorded two singles for Buddah Records.

Fields began her acting career as an extra in the 1974 film Claudine. She has had numerous supporting roles and guest appearances on television. She played an unwed mother opposite Patty Weaver in the NBC television soap opera, Days of Our Lives. Also during the 1970s, she played the abusive birth mother of Millicent “Penny” Gordon Woods (Janet Jackson) on the sitcom Good Times.

From 1978 to 1979, she played Rita Conway in the short-lived The Amazing Spider-Man TV Series. Rita Conway was J. Jonah Jameson’s secretary, the same function as the African-American Glory Grant from the 1970s comics. She also appeared in What’s Happening!!, Hill Street Blues, T.J. Hooker, Roc, Kirk (a short-lived sitcom starring Kirk Cameron), The Wayans Bros., and The Parkers. She played the role of “Laverne”, mother to the character “Regine” on Living Single.