80 Ill. Adm. Code 301.10
Classification Plan
Section 301
Section 301.10Â
Classification Plan
The Director shall maintain, and
revise when necessary, a uniform position classification plan for positions
under the Personnel Code based on the similarity of duties and responsibilities
assigned so that the same schedule of pay may be equitably applied to all
positions in the same class, under the same or substantially the same
employment conditions. However, the pay of an employee whose position is
reduced in rank or grade by reallocation because of a loss of duties or
responsibilities after his/her appointment to such position shall not be
required to be lowered for a period of one year after the position
reallocation.