What 29 CFR 1926.20 requires (plain English)
29 CFR 1926.20 is the foundation of OSHA's construction safety standards: the general safety and health provisions that establish the employer's overarching duty to run a safety program on every construction project. Rather than addressing a single hazard, 1926.20 sets the structural requirements that make all the other Part 1926 standards work: an accident-prevention program, regular jobsite inspections by competent persons, and the rule that only trained or experienced workers operate equipment. It is frequently cited alongside specific hazard violations because a missing safety program underlies so many of them.
The core requirement is proactive inspection. The employer must initiate and maintain the safety programs necessary to comply with Part 1926, and those programs must provide for frequent and regular inspections of the job sites, materials, and equipment: made by competent persons designated by the employer. A "competent person," a term used throughout the construction standards, is someone capable of identifying existing and predictable hazards and who has the AUTHORITY to take prompt corrective measures to eliminate them. Inspection without the authority to fix what is found does not satisfy the standard.
1926.20 also anchors two other basics. Machines and equipment may be operated only by employees qualified by training or experience: a general requirement that specific standards (like powered industrial trucks or cranes) then detail. And defective tools and equipment must be removed from service. Because 1926.20 is the umbrella under which the rest of the construction standards operate, OSHA often pairs a specific citation (a fall hazard, an unguarded machine) with a 1926.20 citation for the absence of the safety program and competent-person oversight that should have caught it.