| HTMLPDF | 81.20.010 | Definition. |
| HTMLPDF | 81.20.020 | Cost of investigation may be assessed against company. |
| HTMLPDF | 81.20.030 | Interest on unpaid assessment—Action to collect. |
| HTMLPDF | 81.20.040 | Commission's determination of necessity as evidence. |
| HTMLPDF | 81.20.050 | Order of commission not subject to review. |
| HTMLPDF | 81.20.060 | Limitation on frequency of investigations. |