O'Donnell most recently served as the director of the Illinois Department of Employment Security.
Preckwinkle says O'Donnell will help oversee 23,000 county employees and implement reforms needed to change the culture of Cook County.
O'Donnell most recently served as the director of the Illinois Department of Employment Security.
Preckwinkle says O'Donnell will help oversee 23,000 county employees and implement reforms needed to change the culture of Cook County.