80 Ill. Adm. Code 620.810
Definition
Section 620
Section 620.810 Definition
a) Demotion is the assignment of an employee to a vacant position
in a class having a lower maximum permissible salary or rate than the class
from which the demotion was made for reasons of inability to perform work of
the class from which the demotion was made.
b) A department head may initiate demotion of an employee by
filing with the Director a written statement of reasons for demotion in the
form and manner prescribed. Such written statement shall be signed by the head
of the department and shall contain sufficient facts to show good cause for the
demotion. No demotion shall become effective without the prior approval of the
Director who shall take into consideration the employee's education,
experience, and performance records.