| Business | Phone |
| Communications Workers-America 108 W Main St, Sun Prairie 53590 | (608) 837-4671 |
| Communications Workers-America 317 S Walker Way, Sun Prairie 53590 | (608) 837-6132 |
| Uswa 737 Lois Dr, Sun Prairie 53590 | (608) 837-5602 |
| Plumbers Local 75 Health Fund 685 Pilgrim Trl, Sun Prairie 53590 | (608) 837-0596 |
| International Assoc-Machinists 1210 Emerald Ter, Sun Prairie 53590 | (608) 837-4088 |
| Painters Local Union 1571 Ivory Dr, Sun Prairie 53590 | (608) 834-1690 |
| Madison Drum & Bugle Corps 1475 W Main St, Sun Prairie 53590 | (608) 837-0707 |