# 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.
# Regulations
1 - 1975.4 - Coverage.