20 ILCS 1015/3

The Department of Employment Security shall open and maintain offices as appropriate for the purpose intended. Upon the outside of each office, in position and manner to secure the fullest public attention, shall be placed a sign that reads in the English language, "Illinois Public Employment Office also known as the Job Service". The Department shall receive and register the names of all persons applying for employment or help, designating opposite the names and addresses of each applicant the character of employment or help desired together with such other facts as may be required or used by the Department.