Final answer:
Section 19 of the OSH Act of 1970 outlines that the Department of Labor has oversight of the self-inspection program, ensuring federal agencies maintain proper safety standards.
Step-by-step explanation:
The section that has oversight of the self-inspection program is detailed in Section 19 of the OSH Act of 1970, which addresses Federal Agency Safety Programs and Responsibilities. Specifically, this section outlines how federal agencies must operate their own comprehensive occupational safety and health programs consistent with the standards promulgated under the Act. The Department of Labor is the key authority responsible for ensuring that self-inspection programs are effectively implemented by federal agencies, which is crucial for maintaining workplace safety and health standards.