| Business | Phone |
| Brotherhood Of Maintenance 400 1st St Nw, Washington 20534 | (202) 638-1611 |
| American Postal Workers Union 1300 L St Nw, Washington 20005 | (202) 842-4200 |
| American Rights At Work 1100 17th St Nw, Washington 20036 | (202) 822-2127 |
| Automotive Petroleum Ind 2120 Bladensburg Rd Ne, Washington 20018 | (202) 526-9250 |
| Brewery & Beverage Drivers 2120 Bladensburg Rd Ne # 209, Washington 20018 | (202) 526-3600 |
| Bricklayers & Trowel Intl Fund 1776 I St Nw # 750, Washington 20006 | (202) 638-1996 |
| Building & Construction Trades 815 16th St Nw # 600, Washington 20006 | (202) 347-1461 |
| Capitol Branch 142 Natl Assn 6310 Chillum Pl Nw, Washington 20011 | (202) 291-5445 |
| Center For Urban Education 1705 Desales St Nw, Washington 20036 | (202) 775-9072 |
| Cie-Hereiu 1219 28th St Nw, Washington 20007 | (202) 965-2958 |
| Communications Workers-America 1010 Vermont Ave Nw, Washington 20005 | (202) 393-3885 |
| Communications Workers-America 4626 Wisconsin Ave Nw, Washington 20016 | (202) 362-9413 |
| Communications Workers-America 501 3rd St Nw, Washington 20001 | (202) 434-1100 |
| Communications Workers-America 5321 1st Pl Ne, Washington 20011 | (202) 291-1500 |
| Community Services Agency 1101 14th St Nw, Washington 20005 | (202) 857-0480 |
| Construction & Genl Laborers 5201 1st Pl Ne, Washington 20011 | (202) 723-3366 |
| Council Of School Officers 2120 Bladensburg Rd Ne # 205, Washington 20018 | (202) 526-4700 |
| D C Nurses Assn 5100 Wisconsin Ave Nw # 306, Washington 20016 | (202) 244-0628 |
| Federal Printing Workers Union 1216 W St Se, Washington 20020 | (202) 678-3300 |
| Fop Dept Of Corrections 711 4th St Nw, Washington 20001 | (202) 737-3505 |
| Gary W Hankins & Assoc 1320 G St Se, Washington 20003 | (202) 544-4813 |
| Graphic Arts Guild Uaw 65 I St Nw, Washington 20001 | (202) 554-3070 |
| Graphic Arts Intl Union 1900 L St Nw, Washington 20036 | (202) 833-3970 |
| Graphic Communications Intl 1900 L St Nw, Washington 20036 | (202) 462-1400 |
| Graphic Communications Intl 6210 N Capitol St Nw, Washington 20011 | (202) 882-3000 |
| Graphic Communications Union 2310 Minnesota Ave Se, Washington 20020 | (202) 582-2800 |
| Hospital Professional Tech 1673 Columbia Rd Nw # 100, Washington 20009 | (202) 483-6221 |
| Hotel & Restaurant Employees 1003 K St Nw # 7, Washington 20001 | (202) 737-2225 |
| Hotel Employees & Restaurant 1219 28th St Nw, Washington 20007 | (202) 393-4373 |
| Iam National Pension Fund 1300 Connecticut Ave Nw # 300, Washington 20036 | (202) 785-2658 |
| Ibew 1125 15th St Nw, Washington 20005 | (202) 728-9033 |
| Ibew 6220 Kansas Ave Ne, Washington 20011 | (202) 829-2900 |
| Icftu 1925 K St Nw # 425, Washington 20006 | (202) 463-8573 |
| International Assoc-Iron Wrkrs 1750 New York Ave Nw # 400, Washington 20006 | (202) 383-4800 |
| International Association-Mach 1016 16th St Nw, Washington 20036 | (202) 833-8579 |
| International Longshoremen's 1101 17th St Nw # 400, Washington 20036 | (202) 955-6304 |
| International Pipe Trades 901 Massachusetts Ave Nw, Washington 20001 | (202) 737-5611 |
| International Transport Worker 1101 17th St Nw # 400, Washington 20036 | (202) 955-8347 |
| International Union-Bricklayer 1776 I St Nw # 500, Washington 20006 | (202) 783-3788 |
| International Union-Oper Engrs 2461 Wisconsin Ave Nw, Washington 20007 | (202) 337-0099 |
| Intl Brotherhood-Teamsters 25 Louisiana Ave Nw, Washington 20001 | (202) 624-6800 |
| Intl Fed Of Chemical Energy 888 16th St Nw, Washington 20006 | (202) 974-8080 |
| Jamica Labor Ctr 1812 R St Nw, Washington 20009 | (202) 667-6190 |
| Labor Party Advocates 1532 16th St Nw, Washington 20036 | (202) 234-5190 |
| Laborers Employers Cooperation 905 16th St Nw, Washington 20006 | (202) 783-3545 |
| Laborers Health & Safety Fund 905 16th St Nw # 3, Washington 20006 | (202) 628-5465 |
| Laborers International Union 905 16th St Nw, Washington 20006 | (202) 737-8320 |
| Liuna-Local Union & Dist 905 16th St Nw # 5, Washington 20006 | (202) 737-1664 |
| Marine Engineers' Beneficial 444 N Capitol St Nw # 800, Washington 20001 | (202) 638-5355 |
| Maritime Trades Dept 815 16th St Nw # 6, Washington 20006 | (202) 628-6300 |
| Public Services Intl 1100 H St Nw, Washington 20005 | (202) 824-0880 |
| Mes Local 2135 5th St Ne, Washington 20260 | (202) 529-9500 |
| Moving Picture Machine Oprtrs 2120 Bladensburg Rd Ne, Washington 20018 | (202) 526-1944 |
| Mpd Labor Committee 1524 Pennsylvania Ave Se, Washington 20003 | (202) 548-8300 |
| Mspof Inc 2225 Georgia Ave Nw, Washington 20001 | (202) 265-2794 |
| Musicians Union Local 161-710 4400 Macarthur Blvd Nw # 306, Washington 20007 | (202) 337-9325 |
| National Alliance-Postal 1505 11th St Nw, Washington 20001 | (202) 667-4040 |
| National Assn-Letter Carriers 100 Indiana Ave Nw # 709, Washington 20001 | (202) 393-4695 |
| National Conference Of Firemen 1023 15th St Nw # 10, Washington 20005 | (202) 962-0981 |
| National Coordinating Comm 815 16th St Nw, Washington 20006 | (202) 737-5315 |
| National Federation-Fed Emplys 1016 16th St Nw # 300, Washington 20036 | (202) 862-4400 |
| National Heavy & Hwy Alliance 905 16th St Nw, Washington 20006 | (202) 347-1660 |
| National Infrastructure 1750 New York Ave Nw, Washington 20006 | (202) 347-1660 |
| National Itpeu 1325 Massachusetts Ave Nw #310, Washington 20005 | (202) 628-5770 |
| National Police Security 6400 Georgia Ave Nw, Washington 20012 | (202) 291-3797 |
| National Treasury Employees 1750 H St Nw, Washington 20006 | (202) 783-4444 |
| National Union Of Hospital 1515 K St Nw, Washington 20005 | (202) 737-5859 |
| National Writers Union 1757 N St Nw, Washington 20036 | (202) 466-8866 |
| Pace International Union 727 15th St Nw # 700, Washington 20005 | (202) 293-7939 |
| Parking & Svc Worker's Union 6925 Blair Rd Nw, Washington 20012 | (202) 545-1789 |
| Prewitt Organizing Fund Inc 1326 18th St Nw, Washington 20036 | (202) 223-2528 |
| Professional Airways Systems 1150 17th St Nw # 702, Washington 20036 | (202) 293-7277 |
| Seiu Local 910 17th St Nw # 11, Washington 20006 | (202) 789-8282 |
| Service Employee Intl Union 1400 I St Nw, Washington 20005 | (202) 289-4754 |
| Service Employees Intl Union 1313 L St Nw, Washington 20005 | (202) 898-3200 |
| Solidarity Center 1925 K St Nw # 300, Washington 20006 | (202) 778-4500 |
| Specialty Workers Adm Svc 2310 Minnesota Ave Se, Washington 20020 | (202) 582-3131 |
| Stitch 1525 Newton St Nw, Washington 20010 | (202) 265-3790 |
| Teamsters 2001 Rhode Island Ave Ne, Washington 20018 | (202) 529-3434 |
| Teamsters 3100 Ames Pl Ne, Washington 20018 | (202) 636-8170 |
| Teamsters 3130 Ames Pl Ne, Washington 20018 | (202) 636-8181 |
| Tedro & Assoc Inc 3130 Ames Pl Ne, Washington 20018 | (202) 832-8509 |
| Working For America Institute 815 16th St Nw # 100, Washington 20006 | (202) 974-8100 |
| 21st Century Democrats 1311 L St Nw # 300, Washington 20005 | (202) 626-5620 |
| Afl-Cio 815 16th St Nw, Washington 20006 | (202) 637-5000 |
| Afl-Cio 888 16th St Nw # 650, Washington 20006 | (202) 628-9262 |
| Afscme Dist Council 1724 Kalorama Rd Nw # 200, Washington 20009 | (202) 234-6506 |
| Air Line Pilots Assn 1625 Massachusetts Ave Nw, Washington 20036 | (202) 797-4033 |
| Amalgamated Transit Union 5025 Wisconsin Ave Nw, Washington 20016 | (202) 537-1645 |
| American Federation Government 1403 W St Ne, Washington 20018 | (202) 289-2565 |
| American Federation Government 80 F St Nw, Washington 20001 | (202) 737-8700 |
| American Federation-State Empl 1625 L St Nw, Washington 20036 | (202) 452-4800 |
| American Federation-Teachers 555 New Jersey Ave Nw, Washington 20001 | (202) 879-4400 |
| Columbia Typographical Union 4626 Wisconsin Ave Nw, Washington 20016 | (202) 362-9413 |
| Transport Workers Union 10 G St Ne # 420, Washington 20002 | (202) 638-6154 |
| Union Of Needletrades Ind 888 16th St Nw # 303, Washington 20006 | (202) 347-7417 |
| Union Privilege Benefit Prog 1125 15th St Nw # 300, Washington 20005 | (202) 293-5330 |
| United Association-Journeymen 901 Massachusetts Ave Nw, Washington 20001 | (202) 628-5823 |
| United Auto Workers 1757 N St Nw, Washington 20036 | (202) 828-8500 |
| United Brotherhood Of Carpentr 50 F St Nw, Washington 20001 | (202) 546-6206 |
| United Food & Commercial Wrkrs 1775 K St Nw, Washington 20006 | (202) 223-3111 |
| United Steelworkers Of America 1150 17th St Nw # 300, Washington 20036 | (202) 778-4384 |
| United Union Of Roofers 1660 L St Nw # 800, Washington 20036 | (202) 463-7663 |