IMRF (Illinois Municipal Retirement Fund. In order to participate in IMRF, a person must be an employee of an IMRF employer and meet the standards for participation. The 600-hour standard is applied to all educational support staff based upon their positions’ expected annual hours of duty. For example, a school employee who works during the school term only is classified by the hours the position is expected to require during the school term. Generally, in a 180-day school term, an employee expected to work three hours a day (540 hours a year) would not participate in IMRF. An employee working four hours each day (740 hours a year) would participate. If an employee works in more than one position for one school district, the hours of all his or her positions are combined in applying this 600-hour standard. An employee working for two school districts must meet the 600-hour standard for each district. Part time employees who meet the 600 hour IMRF standard are accorded the IMRF standard for sick leave: 10 Days/Year.
