| Business | Phone |
| Afge 77 W Jackson Blvd 409, Chicago 60604 | (312) 360-9168 |
| Afl-Cio 55 W Wacker Dr 716, Chicago 60601 | (312) 251-1414 |
| Afl-Cio 940 W Adams St # 404, Chicago 60607 | (312) 492-6569 |
| Afscme 605 W Madison St 321, Chicago 60661 | (312) 902-3570 |
| Afscme 6060 N Northwest Hwy, Chicago 60631 | (773) 792-2430 |
| Afscme Local 3506 111 N Wabash Ave, Chicago 60602 | (312) 641-0431 |
| International Union Of Allied 1950 W Erie St, Chicago 60622 | (312) 738-0822 |
| Amalgamated Transit Union 20 S Clark St, Chicago 60603 | (312) 553-1228 |
| Amalgamated Transit Union 16000 Roth Rd, Chicago 60603 | (260) 627-3390 |
| Amer Federation Of State Cnty 29 N Wacker Dr, Chicago 60606 | (312) 641-6094 |
| Amer Federation-St Municipal 29 N Wacker Dr, Chicago 60606 | (312) 641-3634 |
| American Federation Government 300 S Ashland Ave, Chicago 60607 | (312) 421-6245 |
| American Federation-Employees 29 N Wacker Dr, Chicago 60606 | (312) 641-3368 |
| American Federation-Natrl 2525 W Montrose Ave, Chicago 60618 | (773) 463-4611 |
| American Federation-State Empl 29 N Wacker Dr # 800, Chicago 60606 | (312) 641-6060 |
| Screen Actors Guild 1 E Erie St 650, Chicago 60611 | (312) 573-8081 |
| American Postal Workers Union 2116 S Michigan Ave, Chicago 60616 | (312) 842-8246 |
| American Postal Workers Union 330 S Wells St 810, Chicago 60606 | (312) 663-3753 |
| Bakery & Confectionery Workers 4376 S Archer Ave, Chicago 60632 | (773) 847-2320 |
| James Elliott 11636 S Throop St, Chicago 60643 | (773) 264-8387 |
| Barber's Union 300 S Ashland Ave # 100, Chicago 60607 | (312) 243-4113 |
| Beverage Industry Employees 300 S Ashland Ave 201, Chicago 60607 | (312) 829-6506 |
| Gas Workers Union 300 S Ashland Ave 307, Chicago 60607 | (312) 226-1553 |
| Intl Brotherhood-Boilermakers 2941 S Archer Ave, Chicago 60608 | (773) 247-5225 |
| Bricklayers & Stone Masons 1950 W 43rd St, Chicago 60609 | (773) 650-1841 |
| Brotherhood Of Maintenance-Way 150 S Wacker Dr 300, Chicago 60606 | (312) 630-9328 |
| Building & Common Labor Union 13256 S Brandon Ave, Chicago 60633 | (773) 646-9999 |
| Finish Line Trading Group Llc 208 S La Salle St # 676, Chicago 60604 | (312) 223-0221 |
| Firemen & Oilers Union 111 W Washington St 1360, Chicago 60602 | (312) 372-7915 |
| Federation Of College Clerical 203 N Wabash Ave, Chicago 60601 | (312) 855-1708 |
| Carpenters 3545 W Peterson Ave, Chicago 60659 | (773) 267-5858 |
| Carpenters 750 N Franklin St 102, Chicago 60610 | (312) 280-0230 |
| Carpenters Union 300 S Ashland Ave 102, Chicago 60607 | (312) 829-1396 |
| Central States Joint Board 1950 W Erie St, Chicago 60622 | (312) 738-4432 |
| Central States Joint Board 648 N Damen Ave, Chicago 60622 | (312) 942-1272 |
| Chicago & Ne Il Carpenters 12 E Erie St, Chicago 60611 | (312) 988-7165 |
| Chicago Council Of Carpenters 12 E Erie St, Chicago 60611 | (312) 787-3076 |
| Chicago Federation Of Labor 130 E Randolph St 2600, Chicago 60601 | (312) 565-9431 |
| Chicago Federation Of Musician 656 W Randolph St, Chicago 60661 | (312) 782-0063 |
| Chicago Fire Fighters Union 440 W 43rd St, Chicago 60609 | (773) 536-0450 |
| Chicago Journeymen Plumbers 1340 W Washington Blvd, Chicago 60607 | (312) 421-1010 |
| Chicago Mailers Union 204 S Ashland Ave, Chicago 60607 | (312) 243-4664 |
| Chicago Newspaper Guild 36 S Wabash Ave 1400, Chicago 60603 | (312) 236-4924 |
| Chicago Teachers Union 222 Merchandise Mart 400, Chicago 60654 | (312) 329-9100 |
| Chicago Truck Drivers Health 1645 W Jackson Blvd, Chicago 60612 | (312) 738-3920 |
| Chicago Typographical Union 1006 S Michigan Ave 708, Chicago 60605 | (312) 322-9870 |
| Chicago Web Printing Pressmans 325 W Huron St, Chicago 60610 | (312) 440-1580 |
| Chicago Workers' Ctr 3047 W Cermak Rd, Chicago 60623 | (773) 542-5069 |
| Dining Car Employees Union 1130 S Wabash Ave, Chicago 60605 | (312) 427-4373 |
| Day Labor Worker Union 1619 W 19th St, Chicago 60608 | (312) 491-9044 |
| Communications Workers-America 37 S Ashland Ave, Chicago 60607 | (312) 738-0004 |
| Communications Workers-America 806 N Dearborn St, Chicago 60610 | (312) 988-9177 |
| Construction Careers Council 5410 S State St, Chicago 60609 | (773) 548-8601 |
| Cook County College Teachers 208 W Kinzie St 1, Chicago 60610 | (312) 755-9400 |
| County Municipal Employees 323 S Ashland Ave, Chicago 60607 | (312) 226-1001 |
| Graphic Communications Intl 4751 S Central Ave 2s, Chicago 60638 | (773) 925-2877 |