| Business | Phone |
| Weights & Measures Bureau 900 E Grand Ave 502, Des Moines 50319 | (515) 725-1493 |
| Federal Mediation Conciliation 500 Sw 7th St 3, Des Moines 50309 | (515) 280-6947 |
| National Labor Relations Board 210 Walnut St 439, Des Moines 50309 | (515) 284-4391 |
| Us Occupation Safety & Health 210 Walnut St 815, Des Moines 50309 | (515) 284-4794 |
| Us Labor Dept 210 Walnut St 715, Des Moines 50309 | (515) 284-4690 |
| Employment Appeal Board 321 E 12th St, Des Moines 50319 | (515) 281-3638 |