As used in this chapter:
"Agency" means any state administration, agency, authority, board, bureau, commission, committee, council, department, division, institution, office, service, or other similar body of state government created or established by law. However, the term does not include state colleges and universities.
"Appointing authority" means the individual or group of individuals who have the power by law or by lawfully delegated authority to make appointment to a position in an agency.
"Employee" means an employee of an agency except an elected official.
"Supervisor" means an individual who oversees the daily activity of an employee.
IC 4-15-10-1