Annual or Monthly basis: Service during 4 months in any 1 calendar year shall constitute a year of service.
Weekly basis: Service during any week shall constitute a week of service and service during any 17 weeks in any 1 calendar year shall constitute a year of service.
Daily basis: Service during any day shall constitute a day of service and service during 100 days in any 1 calendar year shall constitute a year of service.
Hourly basis: Service during any hour shall constitute an hour of service and service during 700 hours in any 1 calendar year shall constitute a year of service.
40 ILCS 5/8-232