| # | Letters of Interpretation |
|---|---|
| 1 | - 1975.4 - Dental office employers with one or more employees must comply with the OSH Act. |
| 2 | - 1975.4(b)(3) - OSH Act applicability to tribal land workplaces and employers. |
| 3 | - 1975.4(b)(3) - OSHA jurisdiction over employees working in an Indian reservation clinic. |