Chicago Painters District Council 14
Cook County Coalition of Trades
Cook County College Teachers Union, #1600
Intl. Association of Machinists, Local 126
IBEW 134
IUOE, Local 150

IUOE, Local 399
Laborers Intl. Union of North America
Mid America Carpenters Joint Council
Pipefitters Association, Local 597
Teamsters Joint Council 25
And many more…