56 Ill. Adm. Code 2725.5
Designation Of Agents
Section 2725
Section 2725.5 Designation
Of Agents
Any employing unit may designate
an agent to receive any documents by filing the name and address of such agent
with the Agency or by changing its designated address to be in care of its
agent. In such cases, notice to the designated agent is notice to the
employing unit. Notwithstanding the foregoing, such documents sent to an
employing unit shall be adequate notice under this Subpart.