| Business | Phone |
| Afl-Cio 1014 Vine St # 2575, Cincinnati 45202 | (513) 421-1846 |
| Afscme 1213 Tennessee Ave, Cincinnati 45229 | (513) 641-2900 |
| Amalgamated Transit Union 906 Main St # 314, Cincinnati 45202 | (513) 721-2133 |
| American Federation Government 3200 Vine St, Cincinnati 45220 | (513) 861-6047 |
| American Federation-Tv & Radio 920 Race St # A, Cincinnati 45202 | (513) 579-8668 |
| American Postal Workers Union 10948 Reading Rd, Cincinnati 45241 | (513) 563-2233 |
| American Postal Workers Union 6922 Hamilton Ave, Cincinnati 45231 | (513) 522-1114 |
| Bakery & Confectionery Workers 5725 Dragon Way # 115, Cincinnati 45227 | (513) 272-3282 |
| Benefit Office Local Union#212 1216 E Mcmillan St # 204, Cincinnati 45206 | (513) 861-4800 |
| Bricklayers Terrazzo Mosaic 1550 Chase Ave, Cincinnati 45223 | (513) 541-5806 |
| Carpenters Local 126 3961 N Bend Rd, Cincinnati 45211 | (513) 662-7200 |
| Cement Masons Apprenticeship 1216 E Mcmillan St, Cincinnati 45206 | (513) 221-8815 |
| Cincinnati Firefighters Union 213 W 9th St, Cincinnati 45202 | (513) 241-3541 |
| Cincinnati Musicians Assn 2145 Central Pkwy, Cincinnati 45214 | (513) 241-0900 |
| Cincinnati Stage Employees 35 E 7th St # 501, Cincinnati 45202 | (513) 721-1302 |
| Cinelect 1216 E Mcmillan St, Cincinnati 45206 | (513) 559-0734 |
| Cinti Federation Of Teachers 2721 Central Pkwy # B, Cincinnati 45225 | (513) 961-2272 |
| Communications Workers-America 2562 W North Bend Rd, Cincinnati 45239 | (513) 681-4400 |
| Communications Workers-America 617 Vine St # 1432, Cincinnati 45202 | (513) 421-2236 |
| Composition Roofers 1579 Summit Rd # 114, Cincinnati 45237 | (513) 821-3689 |
| Fop Ohio Labor Council 5752 Cheviot Rd # D, Cincinnati 45247 | (513) 923-4555 |
| Glaziers Local 200 Kovach Dr, Cincinnati 45215 | (513) 221-6955 |
| Graphic Communications Union 2351 W Mcmicken Ave, Cincinnati 45214 | (513) 621-3974 |
| Greater Cincinnati Bldg Trades 1550 Chase Ave, Cincinnati 45223 | (513) 541-0328 |
| Hotel Employees & Restaurant 35 E 7th St # 308, Cincinnati 45202 | (513) 241-0341 |
| Ibew 1216 E Mcmillan St # 101, Cincinnati 45206 | (513) 559-0200 |
| Ibew 4100 Colerain Ave, Cincinnati 45223 | (513) 541-6200 |
| Ibew 8260 Northcreek Dr # 140, Cincinnati 45236 | (513) 821-5480 |
| Interfaith Commitee For Wrkrs 215 E 14th St, Cincinnati 45202 | (513) 621-4336 |
| International Association-Mach 1 Neumann Way, Cincinnati 45215 | (513) 733-0989 |
| International Association-Mach 135 Merchant St # 265, Cincinnati 45246 | (513) 772-9310 |
| International Association-Mach 2928 Colerain Ave, Cincinnati 45225 | (513) 681-7036 |
| International Chemical Workers 329 Race St, Cincinnati 45202 | (513) 621-8882 |
| International Union-Oper Engrs 9730 Reading Rd, Cincinnati 45215 | (513) 733-5575 |
| Iron Workers Local Union 4850 Madison Rd, Cincinnati 45227 | (513) 271-4444 |
| Iueafl-Cio 2360 Norwood Ave, Cincinnati 45212 | (513) 407-2653 |
| Iueafl-Cio 2980 Glendale Milford Rd, Cincinnati 45241 | (513) 554-0544 |
| Laborers International Union 3457 Montgomery Rd, Cincinnati 45207 | (513) 221-5260 |
| Letter Carriers Branch 4100 Colerain Ave, Cincinnati 45223 | (513) 542-6400 |
| National Alliance Of Postal 8228 Winton Rd, Cincinnati 45231 | (513) 522-7888 |
| National Postal Mail Handlers 6509 Montgomery Rd, Cincinnati 45213 | (513) 351-5501 |
| Office & Professional Employee 3118 Colerain Ave, Cincinnati 45225 | (513) 541-2480 |
| Pace International Union 660 Northland Blvd # 25, Cincinnati 45240 | (513) 742-2095 |
| Painters Allied Trades Council 200 Kovach Dr, Cincinnati 45215 | (513) 221-7990 |
| Plasterers & Cement Masons 1216 E Mcmillan St, Cincinnati 45206 | (513) 221-1313 |
| Reinforced Concrete Iron 4958 Winton Ridge Ln, Cincinnati 45232 | (513) 761-3720 |
| Sheet Metal Workers Intl 1579 Summit Rd # 106, Cincinnati 45237 | (513) 821-5771 |
| Shopmens Iron Workers Local522 1579 Summit Rd # 123, Cincinnati 45237 | (513) 821-0522 |
| Teamsters Local Union 1600 Central Pkwy # 2, Cincinnati 45202 | (513) 621-7886 |
| Teamsters Local Union 2100 Oak Rd # 201, Cincinnati 45241 | (513) 631-0220 |
| Teamsters Local Union 4632 Paddock Rd, Cincinnati 45229 | (513) 242-8100 |
| Typographical Union 1216 E Mcmillan St, Cincinnati 45206 | (513) 751-0845 |
| United Aerospace Workers 10020 Reading Rd, Cincinnati 45241 | (513) 563-6181 |
| United Automobile Workers 10708 Reading Rd, Cincinnati 45241 | (513) 563-1252 |
| United Automobile Workers 4790 Red Bank Rd, Cincinnati 45227 | (513) 561-4880 |
| United Food Commercial Workers 8150 Corporate Park Dr, Cincinnati 45242 | (513) 489-3111 |
| United Food Workers Local 1636 State Ave, Cincinnati 45204 | (513) 471-2953 |
| United Steelworkers Of America 1329 E Kemper Rd # 4214, Cincinnati 45246 | (513) 671-8792 |
| United Steelworkers Of America 8968 Blue Ash Rd, Cincinnati 45242 | (513) 793-0272 |
| Uswa Local 14734 4730 Madison Rd, Cincinnati 45227 | (513) 871-9249 |