65 ILCS 5/3.1-10-45

The municipal comptroller (if there is one), municipal clerk, municipal treasurer, and city collector, severally, shall appoint the various clerks and subordinates in their respective offices authorized by the corporate authorities. Those officers shall be held responsible, severally, for the fidelity of all persons so appointed by them. This power, however, is subject to the provisions of Division 1 of Article 10. The power of municipal clerks is also subject to the provisions of Section 3.1-30-10.