Competent Person, Qualified Person, and Authority Boundaries

Competent Person, Qualified Person, and Authority Boundaries

Why These Terms Matter

Construction standards use person-based authority because some decisions cannot be made safely by a generic supervisor or a checklist. OSHA defines both terms in 1926.32. A competent person (1926.32(f)) is "one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them." A qualified person (1926.32(m)) is "one who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training, and experience, has successfully demonstrated his ability to solve or resolve problems relating to the subject matter, the work, or the project." The exam rarely asks for the words verbatim, but it constantly tests whether you route a decision to the right authority level.

These roles are task-specific. A superintendent may be the competent person for excavation inspections yet not qualified to design a complex scaffold, approve crane assembly engineering, or evaluate a damaged fall arrest system. A professional engineer (PE) may be qualified to design a protective system yet not be the on-site competent person who inspects daily and removes workers from danger. Titles do not automatically create authority; the standard's two-part definition does.

Where the Standards Name Each Role

Memorize which subparts demand which person. Competent person is named in Excavations (Subpart P, daily and post-rain inspection), Scaffolds (Subpart L), Fall Protection (Subpart M), Stairways and Ladders (Subpart X), Steel Erection (Subpart R), and Cranes (Subpart CC, for several inspections). Qualified person is named for fall protection system and anchorage design where the 5,000-pound anchor rule is not met, certain scaffold designs, crane assembly/disassembly direction (the A/D director must be both competent and qualified), and engineered shoring. When a scenario mentions designing, calculating, or modifying, lean toward qualified person or engineer; when it mentions inspecting, recognizing, or correcting field conditions, lean toward competent person.

Competent Person in the Field

The competent person is needed where conditions change quickly. The key exam phrase is authority to take prompt corrective action. If a person can identify a hazard but cannot stop work, remove employees, tag equipment, or require escalation, that person may be knowledgeable but is not functioning as the required competent person. Subpart P is the classic trap: the competent person must inspect excavations daily, before each shift, and after every rainstorm or other hazard-increasing event, and must remove workers when hazards appear.

Qualified Person Decisions

Qualified person decisions involve specialized technical judgment: designing scaffold components, engineered excavation protective systems, fall protection anchorage or horizontal lifeline systems, crane assembly or modification issues, and structural support decisions. The qualified person may be an engineer, manufacturer representative, or trained specialist depending on the standard. A common exam trap assigns a design decision to a competent person when the scenario requires a qualified person. Competent persons inspect, recognize, and act within scope; qualified persons solve technical problems within their expertise. Both are often required on the same activity, as when a qualified person designs an anchorage and a competent person verifies workers use it and removes damaged gear.

CHST Authority and Limits

A CHST may recommend controls, conduct inspections, stop unsafe work under company policy, coordinate training, review documents, and escalate issues. But the CHST should not approve a deviation from a standard, alter equipment contrary to a manual, stamp an engineering design, interpret medical restrictions beyond their qualifications, or override an AHJ. Ethical, competent practice includes saying, "This decision requires the competent person, qualified person, manufacturer, engineer, or current standard."

When boundaries are unclear, use a conservative decision path:

• Stop or isolate the exposure if workers face immediate risk.
• Identify the decision required: inspection, design, operation, medical, environmental, or regulatory interpretation.
• Match the decision to the required person or authority.
• Document the condition, the person contacted, interim controls, and the final decision.
• Communicate the outcome to affected workers before work resumes.

Exam Lens

Scenario answers like "retrain the worker," "tell the foreman," or "proceed under observation" are often incomplete when the standard requires a competent person inspection or qualified person design. The best answer recognizes the role named or implied by the hazard. If a trench changes after rain, choose competent person reinspection. If a scaffold needs custom design, choose qualified person or PE review. If equipment instructions are unclear, consult the manufacturer before modification. If a permit or plan controls the work, follow and update the current plan.

The goal is not to memorize every place these words appear but to apply authority correctly. A CHST protects workers by putting decisions in the hands of people who are authorized, capable, and accountable for that specific hazard. Watch for the distractor that pairs the right person with the wrong scope: competent persons inspect and correct, they do not engineer.