Career Employer

Your FREE OSHA 30 Flashcards 2026 – 100+ Cards

Realistic, OSHA 30 Construction Outreach flashcards across the Focus Four and the 29 CFR 1926 required and elective topics — flip, match, type, and quiz yourself.

How well do you know them?

To find us again, just search “Career Employer OSHA 30”

By

Click Study Flashcards above to open the flashcard hub — over a hundred OSHA 30 cards you can flip, match, type, or quiz yourself on. Every card is drawn from the OSHA 30-Hour Construction Outreach topics under 29 CFR 1926, so you study exactly what the course teaches.[1] Pair them with our free practice test and study guide.

OSHA 30 Flashcard Study Modes

Flip mode is the quiet first pass: read a term, picture the answer, turn the card. Match times you on pairing terms with definitions, Quiz builds multiple-choice questions from the same cards, and Type hands you the definition and asks you to produce the term, so PASS method has to come back from memory rather than look familiar.

Free OSHA 30 flashcards from Career Employer — active recall for the Construction Outreach course

Why Flashcards Work for OSHA 30

Elective & Specialized Hazards is the largest group at 27 cards, and it carries the fire and permit-required work vocabulary that OSHA 30 electives lean on. You get fire classification and response terms such as Fire triangle, Class B fire, and PASS method, plus entry roles and controls like Confined space, Attendant, and Fire watch.

Ladders, Scaffolds & Excavations follows with 21 cards on access and trenching rules. The numeric cards matter most here, including 4-to-1 ladder angle and 4× base width rule, and the soil and protection terms run through Soil classification, Type A soil, Type C soil, Shoring, and Trench box (shield).

Additional & Optional Topics holds 18 cards on the everyday conditions that show up across job sites: heat illness terms like Heat stroke, Acclimatization, and Water, rest, shade, alongside program and behavior cards such as Emergency action plan, Near-miss reporting, Safe manual lifting, and Housekeeping.

Introduction to OSHA & Worker Rights runs 17 cards on the legal frame, from OSH Act of 1970 and Imminent danger to the standard sets 29 CFR 1910 and 29 CFR 1926 and the difference captured by OSHA 30 vs OSHA 10. Managing Safety & Health, also 17 cards, drills recordkeeping and control terms, including OSHA Form 300 Log, OSHA Form 301, Elimination, Substitution, and Engineering control.

The Focus Four Hazards gives you 16 cards on Falls, Electrocution, and Struck-by hazard, with protection terms such as Guardrail system, Safety net system, and GFCI. PPE & Health Hazards closes with 16 cards separating Safety hazard from Health hazard and covering Hard hat, Hearing protection, Asbestos, and Lead exposure.

OSHA 30 rewards instant recall of trigger heights and distances, soil classifications, the hierarchy of controls, and the 29 CFR 1926 standards.[3] Spaced flashcards are the most efficient way to make that knowledge automatic. Used alongside our practice test and study guide, they turn review time into measurable progress.

OSHA 30 Flashcards by Topic

The cards are organized by the OSHA 30 Construction Outreach topics. Drill the highest-emphasis ones first — the Focus Four and the elective hazards take up the most course time and generate the most questions:[2]

OSHA 30 flashcards by topic
TopicWhat it covers
Introduction to OSHA & Worker RightsOSH Act, General Duty Clause, worker rights, 29 CFR 1926
Managing Safety & HealthSafety programs, hierarchy of controls, recordkeeping, leadership
The Focus Four HazardsFalls, electrocution, struck-by, caught-in or between
PPE & Health HazardsHard hats and respirators; silica, lead, asbestos, noise
Ladders, Scaffolds & ExcavationsSubparts X, L, P; soil types and protective systems
Elective & Specialized HazardsConfined spaces, fire, cranes/rigging, tools, lockout/tagout
Additional & Optional TopicsHeat/cold, emergency response, first aid, ergonomics, policies

How to Get the Most Out of These Flashcards

  • Start with the biggest block. Elective & Specialized Hazards has 27 cards, so clear its fire and entry terms first in Flip mode before the smaller domains compete for attention.
  • Type the numbers. Drill 4-to-1 ladder angle and 4× base width rule in Type mode, since near-miss recall on measurement rules is the gap that shows up under exam pressure.
  • Use Match for families. Timed pairing works well on look-alike sets such as Class A fire, Class B fire, and Class C fire, and on the OSHA Form 300 Log recordkeeping cards.
  • Switch when recall holds. Once Quiz mode stops surprising you across the Focus Four and PPE cards, move to the practice test and use the study guide for anything you miss.
  • Rotate, do not cram. Work one or two domains per sitting across the 132 cards, then re-Flip yesterday’s domain first so the older terms keep resurfacing.

OSHA 30 Flashcards FAQ

Over a hundred free OSHA 30 flashcards, organized across the Construction Outreach topics — Introduction to OSHA and worker rights, Managing Safety and Health, the Focus Four hazards, PPE and health hazards, ladders/scaffolds/excavations, elective and specialized hazards, and additional optional topics. They're free with no account required.

OSHA 30 flashcard bank

All 132 cards, by topic

A reference copy of every card in this deck. Each answer stays hidden until you choose to show it. To study with Flip, Match, Type and Quiz modes and track what you have mastered, use Study Flashcards at the top of the page.

Introduction to OSHA & Worker Rights (17)

OSHA
Show answer

The Occupational Safety and Health Administration — the U.S. Department of Labor agency that sets and enforces workplace safety and health standards.

OSH Act of 1970
Show answer

The federal law that created OSHA and requires employers to provide a safe and healthful workplace.

General Duty Clause (Section 5(a)(1))
Show answer

Requires every employer to keep the workplace free from recognized hazards likely to cause death or serious physical harm, even when no specific standard applies.

Section 5(b) of the OSH Act
Show answer

The duty on each employee to comply with OSHA standards, rules, and orders that apply to their conduct.

29 CFR 1926
Show answer

OSHA's safety and health standards for the construction industry, organized into subparts A through CC.

29 CFR 1910
Show answer

OSHA's general industry standards; some provisions are incorporated into construction work.

OSHA Outreach Training Program
Show answer

Voluntary 10- and 30-hour orientation training delivered by OSHA-authorized trainers; completion earns a DOL student course completion card.

OSHA 30 vs OSHA 10
Show answer

OSHA 30 is the supervisor/management-level course (30 hours, more depth and breadth); OSHA 10 is the entry-level course (10 hours) for workers.

DOL student course completion card
Show answer

The card issued after completing all 30 contact hours and passing the course final; documents training — it is not a certification or license.

Right to a safe workplace
Show answer

A core OSHA worker right: employers must provide a workplace free from recognized serious hazards.

Right to training you understand
Show answer

Workers must receive safety training in a language and manner they can understand.

Right to file a complaint / request inspection
Show answer

Workers may file a confidential complaint and request an OSHA inspection of their workplace.

Protection from retaliation (Section 11(c))
Show answer

It is illegal for an employer to fire, demote, or punish a worker for reporting a hazard or exercising OSHA rights.

Imminent danger
Show answer

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

OSHA inspection priority order
Show answer

Imminent danger, then fatalities/catastrophes, then worker complaints/referrals, then programmed inspections of high-hazard industries.

"It's the Law" poster
Show answer

The OSHA poster employers must display to inform workers of their rights and responsibilities under the OSH Act.

Whistleblower complaint
Show answer

A complaint a worker can file with OSHA when punished for exercising a protected safety right.

Managing Safety & Health (17)

Safety and health program
Show answer

OSHA's recommended proactive system with seven core elements to find and fix hazards before they cause harm.

Hazard identification and assessment
Show answer

The foundational safety-program element: proactively finding and assessing the hazards that exist or could reasonably be expected on a job.

Worker participation
Show answer

A safety-program element: encouraging hazard reporting and involving workers in finding and fixing hazards, without fear of retaliation.

Management leadership
Show answer

A safety-program element: leaders commit resources, set expectations, and lead by example on safety.

Hierarchy of controls
Show answer

Ranking of hazard controls from most to least effective: elimination, substitution, engineering controls, administrative controls, then PPE.

Elimination
Show answer

The most effective control — physically removing the hazard from the workplace.

Substitution
Show answer

Replacing a hazard with a less dangerous alternative (e.g., a water-based product for a solvent-based one).

Engineering control
Show answer

A control that reduces a hazard at the source (ventilation, wet-cutting, guardrails); ranks above administrative controls and PPE.

Administrative control
Show answer

A control that changes how people work (training, signage, rotation, procedures); ranks above PPE but below engineering controls.

OSHA Form 300 Log
Show answer

The Log of Work-Related Injuries and Illnesses that covered employers keep for each recordable case.

OSHA Form 300A
Show answer

The annual summary of recordable injuries and illnesses that must be posted (typically February–April).

OSHA Form 301
Show answer

The individual incident report documenting the details of each recordable injury or illness.

Report a fatality within 8 hours
Show answer

A work-related fatality must be reported to OSHA within 8 hours.

Report hospitalization/amputation/eye loss within 24 hours
Show answer

In-patient hospitalizations, amputations, and losses of an eye must be reported to OSHA within 24 hours.

Foundations for Safety Leadership
Show answer

An OSHA 30 elective teaching frontline supervisors to lead by example and engage workers in spotting and fixing hazards.

Incident investigation
Show answer

Investigating an injury or near miss to determine root causes and prevent recurrence.

Near miss
Show answer

An event that could have caused injury but didn't; a free warning that reveals a hazard to correct.

The Focus Four Hazards (16)

Focus Four (Construction Fatal Four)
Show answer

The four hazard categories causing most construction deaths: falls, electrocution, struck-by, and caught-in or between.

Falls
Show answer

The #1 cause of construction fatalities; protection is required at 6 feet or more above a lower level in general construction.

6-foot fall protection trigger
Show answer

Under 29 CFR 1926.501, fall protection is required at 6 feet or more above a lower level in general construction.

Guardrail system
Show answer

A fall barrier with a top rail about 42 inches (±3) above the surface, a midrail, able to withstand a 200-pound force.

42-inch guardrail top rail
Show answer

The required height (±3 in) of a standard guardrail top rail; a 38-inch rail is non-compliant (below the 39-inch minimum).

Personal fall arrest system (PFAS)
Show answer

A full-body harness, connector, and anchorage that stops a worker after a fall begins, limiting arresting forces.

Safety net system
Show answer

A fall-protection method using nets installed below a work area to catch a falling worker.

Electrocution
Show answer

Death by electric shock; in construction most often from contact with overhead or buried power lines.

10-foot power-line clearance
Show answer

Keep workers, equipment, scaffolds, and cranes at least 10 feet from energized overhead lines up to 50 kV (more for higher voltage).

GFCI
Show answer

Ground-fault circuit interrupter — quickly shuts off power on a ground fault to protect workers from shock.

Assured equipment grounding program
Show answer

A program of inspections and tests for cords and tools, used as an alternative to GFCIs to protect against shock.

Struck-by hazard
Show answer

Forcible contact with a moving, flying, or falling object — a vehicle, a dropped tool, or a load slipping from a sling.

Caught-in or between hazard
Show answer

An injury where a worker is crushed, pinched, squeezed, or buried (e.g., a trench cave-in or unguarded machinery).

Struck-by vs caught-in/between
Show answer

Struck-by comes from the impact of a moving object; caught-in/between comes from being crushed or trapped.

High-visibility clothing
Show answer

PPE worn in roadway work zones to make workers visible and reduce struck-by hazards from vehicles and equipment.

Suspended load rule
Show answer

Never stand or work under a suspended load; struck-by deaths occur when loads fall from cranes or slings.

PPE & Health Hazards (16)

PPE
Show answer

Personal protective equipment (hard hats, eye/face, hearing, gloves, respirators); the last line of defense in the hierarchy of controls.

Employer pays for required PPE
Show answer

The employer must provide and pay for required PPE at no cost to the worker, with a few narrow exceptions.

Hard hat
Show answer

Head PPE protecting against impact and falling objects; required where overhead or impact hazards exist.

Hearing protection
Show answer

Earplugs or earmuffs used to control noise exposure from power tools and heavy equipment.

Impact-rated safety glasses
Show answer

Eye PPE rated to protect against flying particles from grinding, cutting, and chipping.

Wet concrete hazard
Show answer

Wet cement is caustic to skin; protect with alkali-resistant gloves and waterproof boots.

Safety hazard
Show answer

A hazard that causes immediate, acute injury — a fall, an electric shock, or being struck by an object.

Health hazard
Show answer

A hazard that harms gradually through exposure — silica, lead, asbestos, noise, chemicals — causing illness over time.

Respirable crystalline silica
Show answer

Fine dust from cutting/grinding concrete and masonry; causes silicosis and lung cancer. Construction PEL is 50 µg/m³ (8-hr TWA).

Silica PEL (50 µg/m³)
Show answer

OSHA's construction permissible exposure limit for respirable crystalline silica as an 8-hour time-weighted average.

Wet methods / vacuum dust collection
Show answer

The preferred engineering controls for silica — suppress or capture dust at the source before it becomes airborne.

Lead exposure
Show answer

A construction health hazard from torch-cutting or sanding lead-painted steel; controlled with engineering controls, monitoring, and respirators.

Asbestos
Show answer

A health hazard from disturbing old pipe insulation in renovation/demolition; causes lung disease and cancer.

Permissible exposure limit (PEL)
Show answer

The maximum legal airborne concentration of a hazardous substance, usually as an 8-hour time-weighted average.

Welding fume control
Show answer

Use local exhaust ventilation or respiratory protection for welding/cutting, especially on galvanized steel (zinc fumes).

Welding eye protection
Show answer

A welding helmet or shield with the correct filter-lens shade for the welding process protects against intense light.

Ladders, Scaffolds & Excavations (21)

19-inch elevation trigger
Show answer

A stairway or ladder must be provided at a break in elevation of 19 inches (about 1.5 ft) or more without a ramp or hoist.

Ladder extends 3 feet above landing
Show answer

A portable ladder must extend at least 3 feet above the upper landing surface so workers can grip it stepping off.

4-to-1 ladder angle
Show answer

Set a straight or extension ladder so the base is 1 foot out for every 4 feet of working height.

Three points of contact
Show answer

Keep two hands and one foot, or two feet and one hand, on a ladder at all times; hoist tools rather than carrying them.

Scaffold
Show answer

An elevated, temporary work platform; must be erected, moved, and dismantled under a competent person's supervision.

Scaffold inspection before each shift
Show answer

A competent person must inspect a scaffold for defects before each work shift and after any integrity-affecting event.

Scaffold load capacity (4×)
Show answer

A supported scaffold must hold its own weight plus at least four times the maximum intended load.

Fully planked platform
Show answer

Scaffold platforms must be fully planked or decked, with gaps no wider than about 1 inch except around uprights.

Scaffold fall protection above 10 ft
Show answer

Fall protection is required on a supported scaffold when the platform is more than 10 feet above a lower level.

4× base width rule
Show answer

A supported scaffold must be tied, guyed, or braced when its height exceeds four times its minimum base width.

5-foot excavation trigger
Show answer

Cave-in protection is required in any excavation 5 feet or deeper, unless made entirely in stable rock.

Sloping and benching
Show answer

An excavation protective method that cuts back the walls at a safe angle so soil cannot collapse on workers.

Shoring
Show answer

An excavation protective method using supports (e.g., hydraulic jacks) that brace the trench walls to prevent collapse.

Trench box (shield)
Show answer

A protective structure that shields workers inside an excavation from a cave-in by withstanding the collapse force.

Soil classification
Show answer

OSHA's rating of soil from most to least stable: stable rock, Type A, Type B, Type C.

Type A soil
Show answer

Cohesive soil with high unconfined compressive strength (≥1.5 tsf), such as clay — the most stable soil type.

Type C soil
Show answer

The least stable soil (<0.5 tsf) — sand, gravel, or water-bearing soil; soil with water seeping in is automatically Type C.

Thumb penetration test
Show answer

A manual soil test pressing the thumb into a cohesive soil sample to estimate its strength and classification.

Egress within 25 lateral feet
Show answer

A ladder, ramp, or stair must be within 25 lateral feet of workers in a trench 4 feet or deeper.

Engineer-designed system over 20 ft
Show answer

Protective systems for excavations deeper than 20 feet must be designed by a registered professional engineer.

Daily excavation inspection
Show answer

A competent person must inspect an excavation daily before work begins and as conditions change.

Elective & Specialized Hazards (27)

Competent person
Show answer

Someone able to identify existing and predictable hazards and authorized to take prompt corrective action to eliminate them.

Qualified person
Show answer

Someone who, by degree, certificate, or extensive experience, has shown the ability to solve problems in a particular subject or work.

Confined space
Show answer

A space large enough to enter and work in, with limited entry/exit, that is not designed for continuous occupancy.

Permit-required confined space
Show answer

A confined space with a serious hazard — hazardous atmosphere, engulfment, entrapping configuration, or other recognized hazard.

Authorized entrant
Show answer

The confined-space role permitted to enter the space; monitors conditions and exits if a hazard arises.

Attendant
Show answer

The confined-space role who stays outside, monitors entrants, and never enters to attempt rescue.

Entry supervisor
Show answer

The confined-space role who authorizes the written entry permit and verifies conditions are safe before entry.

Atmospheric testing order
Show answer

Test a confined space in order: oxygen first, then flammable gases/vapors, then toxic air contaminants.

Safe oxygen range (19.5%–23.5%)
Show answer

Acceptable oxygen content in a confined space; below 19.5% is oxygen-deficient, above 23.5% is oxygen-enriched.

Non-entry retrieval
Show answer

Rescuing a confined-space entrant using a full-body harness and retrieval line from outside, used whenever feasible.

Fire triangle
Show answer

The three elements a fire needs — fuel, oxygen, and heat; removing any one extinguishes the fire.

PASS method
Show answer

Operate a fire extinguisher: Pull the pin, Aim at the base of the fire, Squeeze the handle, Sweep side to side.

Class A fire
Show answer

A fire involving ordinary combustibles — wood, paper, cloth, trash, and most plastics.

Class B fire
Show answer

A fire involving flammable liquids and gases — gasoline, oil, grease, solvents, propane.

Class C fire
Show answer

A fire involving energized electrical equipment; use a Class C extinguisher, never water.

Fire watch
Show answer

A trained person stationed during hot work (welding/cutting) near combustibles, equipped with an extinguisher to catch fires.

Lockout/tagout (LOTO)
Show answer

The control of hazardous energy: isolate sources, apply locks and tags, release stored energy, and verify zero energy before servicing.

Stored (residual) energy
Show answer

Hydraulic, pneumatic, spring, gravity, or capacitor energy that must be relieved or restrained during LOTO even after power is off.

Verify zero energy
Show answer

The LOTO step of attempting to start the equipment (then returning controls to off) and testing with instruments before work.

Crane shift inspection
Show answer

A competent person must inspect a crane before each shift it is used.

Crane operator certification
Show answer

Operators of most cranes used in construction must be certified or qualified to operate the equipment.

Qualified signal person
Show answer

One qualified person who directs a crane operator with standard signals when the operator cannot see the load.

Rated capacity (working load limit)
Show answer

The maximum load a sling or rigging hardware may safely carry; never exceed it, and inspect rigging before each use.

Power tool guarding
Show answer

Guards on power tools must be kept in place; removing or disabling a guard exposes the operator to the blade or wheel.

Powder-actuated tool
Show answer

A tool that drives fasteners with an explosive charge; only trained, licensed/qualified operators may use it.

Bench grinder wheel guard
Show answer

A guard enclosing an abrasive wheel to contain fragments if the wheel breaks at high speed.

Excavation soil egress hazard
Show answer

A reminder: workers in deep trenches need safe egress and protection, not just hazard awareness.

Additional & Optional Topics (18)

Water, rest, shade
Show answer

OSHA's core heat-illness prevention: provide cool water, rest breaks, and shade, and let workers acclimatize.

Acclimatization
Show answer

The body's gradual adjustment to working in heat over days; new and returning workers must rebuild it to avoid heat illness.

Heat stroke
Show answer

A medical emergency marked by hot, dry skin or confusion; cool the worker immediately and call 911.

Hypothermia (early signs)
Show answer

Uncontrollable shivering, fatigue, and fumbling hands signal early hypothermia from cold stress.

Emergency action plan
Show answer

A plan covering how to report emergencies, evacuation routes and exits, and accounting for all employees.

Head count at assembly point
Show answer

After an evacuation, take a head count at the designated assembly area to confirm everyone got out safely.

Lightning / severe weather response
Show answer

Stop outdoor work and move workers to a safe enclosed shelter when lightning or severe weather threatens.

Control bleeding (direct pressure)
Show answer

First aid for a bleeding wound: apply firm direct pressure to control the bleeding.

Universal precautions (bloodborne)
Show answer

Treat all blood and body fluids as if infectious and wear protective barriers (gloves) when giving first aid.

Musculoskeletal disorder (MSD)
Show answer

An injury to muscles, nerves, or joints from awkward posture, repetition, and force; an ergonomic risk.

Ergonomic engineering control
Show answer

Redesigning the task or workstation to fit the worker — the preferred way to reduce musculoskeletal-disorder risk.

Safe manual lifting
Show answer

Lift with the legs, keep the load close to the body, avoid twisting, and use mechanical aids or help for heavy loads.

Housekeeping
Show answer

Keeping walkways clear of debris and clutter to reduce slip, trip, and fall hazards on the jobsite.

Site safety orientation
Show answer

Briefing new workers on the specific hazards and safety rules of a particular jobsite before they start work.

Distraction / cell-phone policy
Show answer

A jobsite rule limiting phone use because distraction can cause workers to miss hazards and lead to accidents.

Substance-abuse policy
Show answer

A jobsite policy addressing impairment from drugs or alcohol, which raises the risk of serious accidents.

Near-miss reporting
Show answer

Reporting events that could have caused serious injury, because they reveal hazards to correct before harm occurs.

Training in a language workers understand
Show answer

OSHA requires safety information and training to be delivered in a language and manner workers can understand.

References

  1. 1.OSHA. “Outreach Training Program — Construction Industry Requirements.” osha.gov. ↑
  2. 2.OSHA. “Construction Focus Four Training.” osha.gov. ↑
  3. 3.U.S. Government (eCFR). “29 CFR Part 1926 — Safety and Health Regulations for Construction.” ecfr.gov. ↑
Career Employer

Career Employer is the ultimate resource to help you get started working the job of your dreams. We cover topics from general career information, career searching, exam preparation with free study materials, career interviewing, and becoming successful in your career of choice.

Follow Us:

All Posts

Career Employer’s Editorial Process

Here at Career Employer, we focus a lot on providing factually accurate information that is always up to date. We strive to provide correct information using strict editorial processes, article editing, and fact-checking for all of the information found on our website. We only utilize trustworthy and relevant resources. To find out more, make sure to read our full editorial process page here.