An IMRF job refers to a position that qualifies for participation in the Illinois Municipal Retirement Fund (IMRF), a public pension system for eligible government and public employees in Illinois. These jobs are typically in local government, schools, or other public agencies that participate in IMRF. Employees in IMRF jobs contribute a portion of their salary to the fund, which provides retirement, disability, and other benefits. Eligibility is determined by the employer and requires meeting minimum hour and service requirements.