Synopsis As Introduced Amends the Illinois Income Tax Act. Provides for a credit against withholding taxes in an amount equal to the wages or salary paid by a private employer to an Illinois employee while the employee is on organ donation leave if the employer grants all of its employees the option of taking a paid leave of absence of at least 30 days for the purpose of serving as an organ donor or bone marrow donor. Provides that the credit may not exceed $1,000 for each employee who takes organ donation leave. Provides that such a leave of absence must be taken without loss of pay, vacation time, compensatory time, personal days, or sick time for at least the first 30 days of the leave of absence. Provides that the credit applies for reporting periods beginning on or after January 1, 2021. Effective immediately.