Illinois 5 Day Notice to Pay or Quit

Sec. 9-209. Demand for rent – eviction action. A landlord or his or her agent may, any time after rent is due, demand payment thereof and notify the tenant, in writing, that unless payment is made within a time mentioned in such notice, not less than 5 days after service thereof, the lease will be terminated. If the tenant does not pay the rent due within the time stated in the notice under this Section, the landlord may consider the lease ended and commence an eviction or ejectment action without further notice or demand. A claim for rent may be joined in the complaint, including a request for the pro rata amount of rent due for any period that a judgment is stayed, and a judgment obtained for the amount of rent found due, in any action or proceeding brought, in an eviction action under this Section.