Since December 1984, she has served as a Commissioner of the Postal Rate Commission. Previously, she was vice president and general manager, Kaiser Center, in Oakland, CA, 1980 - 1984; and active in both civic and community projects in Oakland.
She graduated from Mills College (B.S., 1974), the California State University (M.S., 1975), and the University of California, Berkeley (Ed.D., 1985). Ms. Guiton has one child and resides in Falls Church, VA. She was born October 30, 1941, in Springfield, IL.