FREE OSHA 10 Study Guide 2026: Construction Outreach

This free OSHA 10 study guide teaches the job-site safety knowledge covered in the OSHA 10-Hour Construction Outreach course, organized to OSHA’s current Outreach Training Program curriculum for the construction industry (29 CFR 1926).^[1] It is the entry-level worker awareness card from OSHA — basic hazard recognition and your rights on the job.

It’s interactive, not a wall of text: every module has built-in checkpoint quizzes, flashcards, and practice questions, so you learn the material by doing — not just reading. Need the longer, supervisor-level course? See our companion OSHA 30 study guide.

What OSHA 10 Is

OSHA 10 is a 10-hour training course, not a licensing exam. It is part of OSHA’s voluntary Outreach Training Program and is delivered by OSHA-authorized trainers.^[1]

This guide covers the Construction version, built around the hazards a construction worker actually faces. To earn the official Department of Labor (DOL) student completion card, you must complete all ten instructional hours; most providers also add topic quizzes and a final exam.

The single most useful thing to know before you study: the course is built around the Focus Four— the four hazards that cause most construction deaths. Master those, learn your rights, and understand that PPE is the last line of defense, and the rest of the course falls into place.

One naming note worth keeping straight: “OSHA 10” comes in two versions— Construction (29 CFR 1926) and General Industry (29 CFR 1910). They share the same foundations (rights, PPE, HazCom) but differ on specifics, most famously the fall-protection trigger height. This guide teaches the Construction course; always confirm which version your employer or state requires.

OSHA 10 Course Snapshot

The Construction Outreach course is built from required topics plus elective and optional topics.^[1] The required topics — led by the Focus Four— carry the most weight, which is why this guide front-loads them:

Module 1 · Introduction to OSHA

A required topic. Before the hazards, the course grounds you in the law: what OSHA is, the rights it gives workers, the duties it puts on employers, and how it inspects and enforces. These “your rights” items show up throughout the final exam.

1.1 The OSH Act, OSHA & NIOSH

OSHA — the Occupational Safety and Health Administration — was created by the Occupational Safety and Health Act of 1970. Its central purpose, written into the Act, is to assure safe and healthful working conditions for working men and women, which it does by setting and enforcing standards and by providing training and outreach.^[2] The same Act created NIOSH, a research agency that recommends standards but does not enforce them.

When no specific standard covers a serious recognized hazard, OSHA can still act through the General Duty Clause— Section 5(a)(1) of the Act — which requires employers to keep the workplace free from recognized hazards likely to cause death or serious harm.

1.2 Worker Rights & Employer Responsibilities

Know your rights cold — they are a favorite source of exam questions.^[2] Workers have the right to a safe workplace; to training in a language they understand; to access their exposure and medical records; to see records of work-related injuries; to file a confidential complaint and request an OSHA inspection; and to be free from retaliation under OSHA’s whistleblower protections.

Employers carry the matching responsibilities: provide a safe workplace, comply with standards, furnish required PPE (generally at no cost), train workers, keep injury records, and display the “Job Safety and Health: It’s the Law” poster. Workers, in turn, must follow safety rules and use the protective equipment provided.

1.3 Inspections, Citations & State Plans

OSHA cannot inspect everywhere at once, so it follows a fixed order of inspection priorities. An imminent danger— a hazard that could cause death or serious harm immediately — always comes first.

An inspection opens with an opening conference explaining its reason and scope; a worker and an employer representative may join the walkaround. If violations are found, OSHA issues a written citation that names the standard, any penalty, and an abatement (correction) date.

Employers who disagree can contest within the time allowed. In a state with an approved State Plan, the state runs the program but must be at least as effective as federal OSHA.

Module 2 · Walking-Working Surfaces & Fall Protection

The core required block. Falls are the single leading cause of construction deaths, so this is the most heavily tested module. Learn the Focus Four, the trigger heights, and the methods that protect workers from falls and falling objects.

2.1 The Focus Four & Fall Hazards

The Focus Four are the four leading causes of construction worker deaths: falls, struck-by, caught-in/between, and electrocution.^[3] They are grouped together because together they account for the large majority of construction fatalities. Falls lead the list, which is why fall protection gets the most attention in this course.

On walking-working surfaces, the most direct fall cause is poor housekeeping— wet floors, spills, and clutter in walkways — so keeping surfaces clean, dry, and orderly is a first-line control. A struck-by hazard (falling tools and materials) and a caught-in/between hazard (cave-ins, unguarded machinery) round out the falls-and-impact picture.

2.2 Fall Protection Methods & Triggers

The single highest-yield fact in this course: in construction, fall protection is required at 6 feet or more to a lower level (29 CFR 1926.501).^[4] The trigger differs by standard — general industry is 4 feet— so one blanket height would be wrong for a crew working under a different standard.

Three methods protect against falls. A guardrail system is a passive barrier (top rail ~42 in, midrail, and a toeboard).

A safety net system is rigged beneath the work to catch a fall across open spans where guardrails and tie-off points are impractical. A personal fall arrest system stops a worker who has fallen, using a harness, a shock-absorbing lanyard that limits arresting forces, and an anchorage rated for 5,000 lb per worker.

Module 3 · Exit Routes, Emergency Plans & Fire Protection

An elective/optional block that is almost always taught. When an emergency strikes, getting out safely and controlling fire saves lives. Learn the exit-route rules, the difference between the two emergency plans, and how to use an extinguisher.

3.1 Exit Routes, EAPs & Fire Prevention Plans

An exit route must be continuous, unobstructed, unlocked from the inside, and adequately marked— so blocking it with pallets, chaining a door shut during a shift, or letting an exit sign go dark all violate the rule. Two plans are easy to confuse but serve different purposes:

A required element of an EAP is procedures for reporting a fire or other emergency, together with an evacuation policy and assigned routes. A fire prevention plan is preventive — it identifies fire hazards and controls fuel and ignition sources before a fire can start.

3.2 Fire Extinguishers & the PASS Technique

Only fight a small, contained fire when you have a clear exit behind you. Match the extinguisher class to the fuel, and use PASS— Pull, Aim, Squeeze, Sweep — always aiming at the base of the fire, not the flames or smoke.

Module 4 · Electrical Safety

One of the Focus Four. Electrocution is a top construction killer, so this module is both required and high-yield. Learn how shock happens and the three big controls: GFCIs, grounding, and keeping clear of energized parts.

4.1 Shock, GFCIs & Grounding

A ground-fault circuit interrupter (GFCI) protects people: it senses current leaking to ground — for instance through a worker’s body — and shuts power off in a fraction of a second. OSHA requires GFCI protection (or an assured equipment grounding conductor program) for construction-site receptacles, especially in damp or temporary settings.^[5]

Grounding protects against a different failure: it provides a low-resistance path that carries fault current safely to ground, so if an internal wire contacts a tool’s metal housing, the current trips the circuit instead of leaving the housing energized to shock whoever touches it. That is the job of the third prongon a plug — never defeat it.

4.2 Arc Flash & Power-Line Hazards

An arc flash is the explosive release of heat and energy when a fault jumps between energized conductors. It can cause severe burns even from a distance, which is why approach boundaries and arc-rated PPE are used near high-power panels.

Overhead power lines are another major electrocution hazard — workers and equipment must keep a safe clearance distance. The safest control of all is to de-energize and lock out equipment before working on it (covered in Module 7).

Module 5 · Personal Protective Equipment

A required topic. PPE is essential, but the course is emphatic about where it ranks: it is the last line of defense, used only when better controls cannot fully remove the hazard.

5.1 The Hierarchy of Controls

The hierarchy of controls ranks ways to control a hazard from most to least effective.^[8] PPE sits at the bottom, below elimination, substitution, engineering controls, and administrative controls — because it protects only one worker and can fail. A supervisor who says “PPE alone is enough” is wrong.

5.2 Selecting & Maintaining PPE

Before selecting PPE, the employer must conduct a hazard assessment to determine what hazards are present and what protection is needed — not let workers pick whatever they prefer or wait for an injury.^[6] Under the PPE payment rule, the employer must generally provide required PPE at no cost, train workers on its use, and ensure it is inspected and maintained. Match each piece to the specific hazard:

Respirators carry the most requirements: a respiratory protection program includes a medical evaluation, fit testing to confirm a proper seal, training, and proper cleaning and storage — because a poorly fitting respirator lets contaminated air leak in around the seal and bypass the filter.

Module 6 · Hazard Communication

Part of the required Health Hazards block. If you handle chemicals, you have a right to know what they are and how they can hurt you. The Hazard Communication Standard makes that information consistent and available.

6.1 Right to Know: Labels, SDSs & Training

The Hazard Communication Standard (29 CFR 1910.1200) exists to ensure workers are informed about the identities and hazards of the chemicals they may be exposed to.^[7] It rests on three pillars — labels, Safety Data Sheets, and worker training— and is aligned with the Globally Harmonized System (GHS).

A Safety Data Sheet (SDS) follows a standardized 16-section order, so the same numbered sections always cover first-aid and firefighting on any manufacturer’s sheet — you can find emergency information fast. A GHS pictogram lets a worker recognize physical or health hazards at a glance (OSHA requires eight), and a signal word— “Danger” or “Warning” — flags the severity. A secondary container, such as a spray bottle filled for the shift and shared with others, must be labeled with the chemical’s identity and hazards.

Module 7 · Elective Topics

Elective and optional topics. Beyond the required core, the course samples the hazards a construction worker may meet on a given job. These four show up most often on the final exam.

7.1 Lockout/Tagout & Confined Spaces

Lockout/tagout (LOTO) is the control of hazardous energy: before servicing equipment, energy is isolated, locked out, and verified at zero. Each authorized worker applies their own personal lock, and the machine cannot be re-energized until everyexposed worker has removed their own lock — guaranteeing no one is still in the danger zone.

A permit-required confined space— a tank, vault, or sewer with limited entry, not made for continuous occupancy, holding a serious hazard — demands atmospheric testing for oxygen and hazardous gases before and during entry, and a confined space attendant posted outside who monitors entrants and summons rescue without entering. Many confined-space deaths are would-be rescuers overcome by the same atmosphere.

7.2 Machine Guarding, Bloodborne & Materials Handling

Machine guarding keeps body parts out of dangerous machine areas. A guard at the point of operation— where the machine actually cuts or forms material — prevents amputations and lacerations, and guards keep hands out of nip points where rotating parts can catch and pull in a hand, sleeve, or hair.

For bloodborne pathogens, universal precautions treat all human blood and certain body fluids as if infectious, regardless of the source person’s apparent health; sharps go in puncture-resistant containers, and after a needlestick you wash, report, and seek follow-up. In materials handling and storage, stack and secure loads so they stay stable and won’t slide, fall, or collapse, and separate incompatible chemicals (keep oxidizers away from flammables). And ergonomics fits the task to the worker — a lift assist or waist-height storage cuts the strain that causes musculoskeletal disorders.

How to Use This OSHA 10 Study Guide

This guide is built to be worked, not just read. The OSHA 10 final exam rewards hazard recognition and your rights, so the most efficient path is to learn the material and what a safe worker would do:

• Lead with the Focus Four. Falls, struck-by, caught-in/between, and electrocution dominate the course and the exam — start with fall protection.
• Memorize the trigger heights. 6 feet in construction, 4 feet in general industry — a favorite trick question.
• Know your rights. A confidential complaint, training you understand, access to records, and freedom from retaliation come up throughout the exam.
• Internalize the hierarchy of controls. PPE is the last line of defense, not the first — this idea threads the whole course.
• Check off as you go. Use the Study Guide Contents to mark each section done — it raises your readiness score.
• Take every checkpoint, then prove it. Send your weak area into the flashcards and the practice test, and read every rationale.

OSHA 10 Glossary

The high-yield OSHA 10 terms in one place — hover any dotted term in the guide, or flip the whole deck here as a self-grading flashcard set.

Abatement

The correction of a cited hazard by the deadline OSHA sets in the citation.

Arc flash

The explosive release of heat and energy from an electrical fault between conductors; guarded against with approach boundaries and arc-rated PPE.

Caught-in/between hazard

Being caught, crushed, or pinched between objects, such as trench cave-ins or unguarded machinery.

Citation

A written notice OSHA issues after an inspection finds a violation, describing the violation, any penalty, and an abatement (correction) date.

Confined space attendant

A worker stationed outside who monitors entrants and summons rescue without entering, so they do not become a victim themselves.

Electrocution

Death from electrical contact with live wires, overhead power lines, or faulty equipment; one of the Focus Four.

Emergency action plan

A plan covering how to report emergencies, evacuation procedures and routes, and accounting for employees after evacuation.

Ergonomics

Fitting the task to the worker to reduce musculoskeletal disorders by limiting awkward postures, repetitive motion, and overhead reaching.

Exit route

A continuous, unobstructed path to a place of safety; must be unlocked from the inside and adequately marked.

Fall protection trigger

The height at which fall protection is required — 6 feet in construction (1926.501) and 4 feet in general industry (1910.28).

Fire prevention plan

A plan that identifies fire hazards and controls fuel and ignition sources to keep fires from starting.

Fit testing

A test that confirms a tight-fitting respirator seals properly to a worker's face so contaminated air cannot leak in around it.

Focus Four

The four leading causes of construction deaths: falls, struck-by, caught-in/between, and electrocution.

General Duty Clause

Section 5(a)(1) of the OSH Act, requiring employers to keep the workplace free from recognized hazards likely to cause death or serious harm when no specific standard applies.

GFCI

A ground-fault circuit interrupter that quickly shuts off power when it senses current leaking to ground through a person.

GHS pictogram

A standardized red-diamond symbol on a chemical label that conveys a hazard at a glance; OSHA's HazCom requires eight of them.

Grounding

Providing a low-resistance path that carries fault current safely to ground so an equipment housing does not become energized and shock a worker.

Guardrail system

A passive fall protection barrier with a top rail (~42 in ±3 in), a midrail, and a toeboard around open-sided floors and platforms.

Hazard assessment

The employer's required first step before selecting PPE: surveying the job to determine what hazards are present and what protection is needed.

Hazard Communication Standard

29 CFR 1910.1200; gives workers the right to know about chemical hazards through a written program, labels, SDSs, and training.

Hierarchy of controls

Ranks hazard controls most to least effective: elimination, substitution, engineering controls, administrative controls, then PPE.

Imminent danger

A hazard that could reasonably be expected to cause death or serious physical harm immediately; OSHA's highest inspection priority.

Lockout/tagout

The control of hazardous energy: isolating, locking, and verifying zero energy before servicing equipment so it cannot start unexpectedly.

Machine guarding

Barriers and devices that keep a worker's body out of dangerous machine areas to prevent amputations and lacerations.

NIOSH

The National Institute for Occupational Safety and Health; a research agency (part of CDC) that recommends standards but does not enforce them.

Nip point

An in-running area where two rotating parts meet and can catch and pull in a hand, clothing, or hair.

OSH Act of 1970

The federal law that created OSHA and NIOSH; its central purpose is to assure safe and healthful working conditions for working men and women.

OSHA

The Occupational Safety and Health Administration; created by the OSH Act of 1970 to assure safe and healthful working conditions for workers.

Outreach Training Program

OSHA's voluntary training (10- and 30-hour courses) that teaches hazard recognition and worker rights; it is education, not an enforcement action.

PASS

The fire extinguisher technique: Pull the pin, Aim at the base, Squeeze the handle, and Sweep side to side.

Permit-required confined space

A space large enough to enter, with limited entry/exit, not designed for continuous occupancy, that holds a serious hazard like a dangerous atmosphere.

Personal fall arrest system

A system that stops a fall using a full-body harness, a shock-absorbing lanyard or lifeline, and an anchorage rated for 5,000 lb per worker.

Point of operation

The area of a machine where it actually cuts, shapes, or forms material; guarding here prevents contact with the cutting action.

PPE

Personal protective equipment worn as a barrier between the worker and a hazard; the last line of defense in the hierarchy of controls.

PPE payment rule

OSHA rule that the employer must generally provide required PPE at no cost to workers, with narrow exceptions like ordinary safety-toe footwear.

Respiratory protection program

The written program required for respirator use, including medical evaluation, fit testing, training, and proper cleaning and storage.

Safety Data Sheet

A standardized 16-section document with detailed information on a hazardous chemical's hazards, handling, storage, and emergency measures.

Safety net system

Nets rigged beneath the work to catch a falling worker where guardrails and tie-off points are impractical.

Shock-absorbing lanyard

A deceleration device that extends to dissipate fall energy, reducing the arresting force on the worker's body.

Signal word

The word 'Danger' (more severe) or 'Warning' (less severe) on a GHS label indicating the relative level of hazard.

State Plan

An OSHA-approved state-run job-safety program that must be at least as effective as federal OSHA.

Struck-by hazard

Being hit by falling, flying, swinging, or rolling objects; controlled with toeboards, barricades, hard hats, and high-visibility clothing.

Toeboard

The low barrier along the bottom of a guardrail that keeps tools, materials, and debris from falling off the edge onto people below.

Universal precautions

Treating all human blood and certain body fluids as if they are infectious, regardless of the source person's apparent health.

Walking-working surfaces

Floors, aisles, platforms, and similar surfaces; good housekeeping keeps them clean, dry, and clutter-free to prevent slips and trips.

Whistleblower protection

OSHA protection that prohibits employers from retaliating against workers who file complaints or otherwise exercise their safety and health rights.

OSHA 10 Study Guide FAQ

References

1. 1.OSHA. “Outreach Training Program — Construction Industry Requirements.” osha.gov. ↑
2. 2.OSHA. “Workers' Rights and Employer Responsibilities.” osha.gov. ↑
3. 3.OSHA. “Construction Focus Four Hazards.” osha.gov. ↑
4. 4.U.S. Government (eCFR). “29 CFR 1926.501 — Duty to Have Fall Protection.” ecfr.gov. ↑
5. 5.U.S. Government (eCFR). “29 CFR 1926.404 — Wiring Design and Protection (GFCI).” ecfr.gov. ↑
6. 6.OSHA. “Personal Protective Equipment.” osha.gov. ↑
7. 7.U.S. Government (eCFR). “29 CFR 1910.1200 — Hazard Communication.” ecfr.gov. ↑
8. 8.National Institute for Occupational Safety and Health (NIOSH). “Hierarchy of Controls.” cdc.gov. ↑
9. 100.U.S. Occupational Safety and Health Administration (OSHA). “Workers' Rights and the Right to Know.” osha.gov, accessed 20 June 2026. ↑
10. 101.U.S. Occupational Safety and Health Administration (OSHA). “OSH Act of 1970, Section 5 — Duties.” osha.gov, accessed 20 June 2026. ↑
11. 102.U.S. Occupational Safety and Health Administration (OSHA). “Fall Protection in Construction.” osha.gov, accessed 20 June 2026. ↑
12. 103.U.S. Occupational Safety and Health Administration (OSHA). “Electrical Safety.” osha.gov, accessed 20 June 2026. ↑
13. 104.U.S. Occupational Safety and Health Administration (OSHA). “Hazard Communication — Safety Data Sheets.” osha.gov, accessed 20 June 2026. ↑
14. 105.U.S. Occupational Safety and Health Administration (OSHA). “Control of Hazardous Energy (Lockout/Tagout).” osha.gov, accessed 20 June 2026. ↑
15. 106.U.S. Occupational Safety and Health Administration (OSHA). “Confined Spaces.” osha.gov, accessed 20 June 2026. ↑
16. 107.U.S. Occupational Safety and Health Administration (OSHA). “Machine Guarding.” osha.gov, accessed 20 June 2026. ↑
17. 108.U.S. Occupational Safety and Health Administration (OSHA). “Emergency Preparedness — Getting Started.” osha.gov, accessed 20 June 2026. ↑

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