Confirmation that defender Gregor Robertson has been suspended by the FA for three matches, following his sending off in the 2-1 victory at Bury, starting with this Saturday's trip to Wycombe Wanderers.
The club has decided not to appeal.
Chesterfield secretary Alan Walters said: "In our view the referee was far too hasty in flourishing the red card for what was no more than an ill-timed and clumsy tackle.
"Having already played half the game with just ten men we now face a three match suspension for the same incident, and this seems very severe.
"Although disappointed we have decided not to appeal as it is most unlikely that the decision would be overturned."
Robertson will be suspended for the following games:-
Wycombe Wanderers (A) 7 March 2009
Grimsby Town (H) 11 March 2009
Dagenham & Redbridge (H) 14 March 2009
