| Business | Phone |
| Laborers District Health & Wel 150 1st Ave Ne 450, Cedar Rapids 52401 | (515) 270-6963 |
| Ibew 116 14th Ave Se, Cedar Rapids 52401 | (319) 366-3434 |
| Ibew 370 Blairs Ferry Rd Ne, Cedar Rapids 52402 | (319) 377-7354 |
| Iron Workers Union 89 5000 J St Sw, Cedar Rapids 52404 | (319) 365-8675 |
| Uaw Local 1024 224 16th Ave Sw, Cedar Rapids 52404 | (319) 365-1781 |
| Afscme 1073 Rockford Rd Sw, Cedar Rapids 52404 | (319) 399-1717 |
| Asbestos Workers Local 81 5000 J St Sw 201, Cedar Rapids 52404 | (319) 362-8233 |
| Carpenters Local Union 308 350 Waconia Ct Sw, Cedar Rapids 52404 | (319) 363-0279 |
| Machinists Union Local 831 222 Prospect Pl Sw, Cedar Rapids 52404 | (319) 364-2459 |
| Millwright 2158 3019 Schaeffer Dr Sw, Cedar Rapids 52404 | (319) 247-0563 |
| Millwright Local Union 2158 3343 Southgate Ct Sw # 207, Cedar Rapids 52404 | (319) 363-0745 |
| National Assn-Letter Carriers 1115 Center Point Rd Ne, Cedar Rapids 52402 | (319) 365-5321 |
| Operating Engineers Af Of L 1211 Wiley Blvd Sw, Cedar Rapids 52404 | (319) 396-2050 |
| Painters Local Union 447 5000 J St Sw, Cedar Rapids 52404 | (319) 366-0569 |
| Plumbers & Steamfitters 1839 16th Ave Sw, Cedar Rapids 52404 | (319) 365-0413 |
| Plumbers & Steamfitters Local 5101 J St Sw, Cedar Rapids 52404 | (319) 362-9259 |
| Plus Five 1211 Wiley Blvd Sw, Cedar Rapids 52404 | (319) 396-6304 |
| Retail Wholesale & Dept Store 526 F Ave Nw, Cedar Rapids 52405 | (319) 363-4525 |