EE WAS PULLING WIRE FOR C-404 BAGHOUSE SUPPLY FAN. WHEN STEPPING OFF THE LADDER, HIS FOOT SLIPPED AND HIS BODY WEIGHT CAME DOWN ON HIS TOES, JAMMING THEM. EE WORKED REMAINDER OF THE DAY AND THE FOLLOWING DAY. HOWEVER, HE WAS UNABLE TO WORK 2-17-02 DUE TO PAIN AND SEVERE SWELLING.