80 Ill. Adm. Code 620.870
Status of Demoted Employees
Section 620
Section 620.870 Status of
Demoted Employees
A demoted certified employee
shall be certified in the class to which demoted and shall not be required to
serve a new probationary period. Subject to Section 620.510, a demoted
probationary employee shall serve a new probationary period in the class to which
he is demoted.