83 Ill. Adm. Code 602.40
Identification Requirements
Section 602.40 Identification Requirements
Each public utility shall include
in any contract or agreement with any subcontractor the requirement that any
individual working on behalf of that subcontractor shall present picture
identification when visiting a customer's home or place of business. Upon
arrival at a customer's home or place of business, any subcontractor performing
work shall immediately show to the customer, if the customer is on the
premises, identification that states the name of the individual performing the
work and that contains the individual's picture.