4 Va. Admin. Code § 25-40-150
No person shall be assigned, allowed, or required to work alone in a hazardous area unless they can be seen or heard by another person in attendance.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 2.6, eff. July 19, 1989.