Worthington has been on a tightrope for several weeks and today's defeat prompted the board to act and they showed him the door.
Robert Earnshaw scored Norwich's only goal but they were 3 - 0 downat the time and were well beaten.
Worthington follows Bryan Robson, Gary Waddock and Kevin Blackwell as managers who have lost their Campionship jobs in the last forthnight.
City face Norwich at Carrow Rd on October 21st.