CISCO (CONSTRUCTION INDUSTRY SERVICE CORPORATION)
	AFL-CIO
	AFL-CIO BUILDING AND CONSTRUCTION TRADES
	EXECUTIVE PAYWATCH
	ILLINOIS AFL-CIO
	EPA
	OSHA
	BUREAU OF LABOR STATISTICS
	UNION PRIVILEGE/UNION PLUS
	GEORGE MEANY CENTER FOR LABOR STUDIES
	CENTER TO PROTECT WORKERS RIGHTS
	ILLINOIS LABOR HISTORY SOCIETY
	ILLINOIS DEPARTMENT OF LABOR
	US DEPARTMENT OF LABOR

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