The OSHA 30 course is not a friendly afternoon training. It is 30 hours of safety content, dozens of quizzes, and a final exam that trips up workers who skim. If you are a foreman, site supervisor, or anyone with safety responsibility, you are expected to know the difference between a competent person and a qualified person, when fall protection is required, and what to do when a citation arrives.
You do not need to memorize every line of the OSH Act, but you do need to know where rules live and how they apply on a real job. You are reading this because you want a clear path. Good. Here is the short version: read each module the same day you watch it, take notes by hand, and use practice questions every single day until your score sits comfortably above 80%.
People who fail tend to do one of two things. They binge five modules in a weekend, or they trust a free PDF dump that has not been updated since 2018. Neither approach works.
This guide walks through the OSHA 30 course end to end. We cover the construction track and the general industry track, what the exam actually looks like, the topics that carry the most weight, a 30-day study plan you can copy, and the questions students ask us every week. Use the practice questions on this page early and often.
Quick context before we dig in. OSHA does not run the course directly. Authorized providers run it under the OSHA Outreach Training Program. You watch the content, you pass the quizzes, you complete the final, and the provider sends your DOL card. The card is what your employer wants to see.
This is the first decision and people get it wrong all the time. The OSHA 30 splits into two tracks. Construction covers 29 CFR 1926. General industry covers 29 CFR 1910. They share the introduction and the worker rights material, but the hazard-specific modules differ.
Pick construction if you work on building sites, roads, scaffolding, demolition, excavations, or any project that breaks ground. Pick general industry if you work in a factory, warehouse, healthcare facility, hotel, office tower maintenance, or any fixed workplace.
If you do both, most workers take construction because the hazards there are more aggressive and the requirement to hold a card is more common in contract bids. Take a moment and answer honestly. What did you do last week?
If you wore a hard hat near a crane, you need construction. If you stocked a warehouse near a forklift, you need general industry. Do not let an employer push you into the wrong track to save a few dollars. The exam questions differ and the card will say which version you completed.
If the project is temporary and the site changes (homes, highways, bridges, towers), pick OSHA 30 Construction. If the worksite is permanent and the equipment stays put (factory, warehouse, hospital, processing plant), pick OSHA 30 General Industry. When in doubt, ask your safety manager which standard governs your employer's inspections.
The course is broken into modules. The exact list depends on your provider, but every authorized OSHA 30 must hit a fixed minimum of required topics and elective topics. You cannot skip the mandatory ones. The provider also has to give you optional modules that match your industry.
Mandatory topics for OSHA 30 Construction include the Introduction to OSHA, OSH Act and General Duty Clause, employer and worker rights, recordkeeping, fall protection, electrocution hazards, struck-by, caught-in, personal protective equipment, health hazards, materials handling, hand and power tools, and a stand-down style discussion on the Focus Four.
General industry mandatory topics replace some construction-specific items with walking and working surfaces, machine guarding, lockout/tagout, ergonomics, bloodborne pathogens basics where relevant, and emergency action plans.
Each module ends with a short quiz. You usually need to score above 70% to advance. Plan to spend roughly an hour per topic for most modules. The Focus Four content (falls, electrocution, struck-by, caught-in) will eat more time because the videos are heavier and the quizzes have more questions. Do not rush. The final pulls heavily from these areas.
OSH Act, General Duty Clause, employer and worker rights, the inspection process, how citations and penalties work, OSHA regions and area offices, where to find standards (1910 vs 1926), whistleblower protections.
Falls, electrocution, struck-by, caught-in. This is the highest-weight section of your final exam. Covers fall protection systems (PFAS, guardrails, nets), GFCI, lockout/tagout, vehicle backing, swinging loads, trench protection, machine guarding pinch points.
PPE selection by hazard category, fit testing for respirators, respiratory protection program elements, hazard communication and SDS sheets, silica exposure controls, lead exposure rules, noise dose monitoring, heat stress prevention.
Hand and power tool inspection, electrical safety on temporary sites, scaffold types and competent person rules, ladder duty ratings, crane operator certification, rigging and signaling, trenching shoring and shielding, sloping requirements by soil type.
Conducting daily job hazard analyses, leading toolbox talks, documenting near misses, accident investigation root cause, OSHA 300 log recordkeeping, returning workers to duty after injury, managing subcontractor safety.
Worker right to refuse imminent danger, right to file complaints without retaliation, access to medical and exposure records, training in language workers understand, free OSHA consultation program for small employers.
The final exam comes after every module is complete. Most providers use a 30 to 50 question multiple-choice format. Some break it into two parts, others present it as one block. The passing score sits at 70% by default, though some providers raise it to 80%.
Check your provider's syllabus before you start the final so there are no surprises. Time pressure is light. You typically get up to two hours, and most students finish in under 45 minutes.
The questions test recall of definitions, recognition of hazards in scenarios, and knowing which standard or rule applies. Expect a few questions on numerical thresholds (e.g., the height that triggers fall protection in construction, the maximum distance a portable ladder can extend above a landing).
If you fail the final, most providers allow up to three attempts. Some require a 24-hour cool-down between attempts. If you exhaust attempts, you usually have to repeat the course at additional cost. Treat the first try seriously. Use a practice test like the one on this page until you are scoring 85% consistently, then take the real final.
Multiple choice format throughout. Each question presents four answer options labeled A through D. Single correct answer per question. No essay, no short answer, no fill in the blank, no matching. Some providers include image-based questions where you identify a hazard in a photo, but the answer format stays multiple choice. Scenario questions describe a workplace situation and ask which standard or response applies.
Typically 30 to 50 questions on the final exam depending on the authorized provider. Most providers settle around 40 questions. Module quizzes (10 to 15 questions per module) contribute to module completion but generally do not roll into the final score. The Focus Four content tends to receive disproportionate weight, often 30 to 40 percent of all final exam questions.
70 percent minimum at most authorized providers. A subset require 80 percent for the final. Module quizzes require 70 percent to advance to the next module. Always confirm the specific threshold in your provider syllabus before starting the final exam. If your employer set a higher internal threshold, that is a separate requirement on top of the OSHA minimum.
Up to 3 attempts at most providers. A 24-hour waiting period between retakes is the industry norm to prevent guessing chains. Failure of all three attempts typically requires repeating the entire course at additional cost (often the full original price). Some providers offer a discounted re-enrollment if you fail. Read the refund and retake terms before you pay.
Most providers allow up to 2 hours for the final exam. Most students complete it in under 45 minutes. There is no bonus for finishing quickly and no penalty for taking longer. Use the full time if you need it. If your provider uses a session timeout (some do at 60 minutes), watch the clock and submit before it expires to avoid forced submission with unanswered questions.
Varies by provider. Some allow access to the course material during the final. Others lock the material once the final begins. A few require a webcam-proctored closed-book exam. Read your provider's exam rules carefully. If it is open book, prepare bookmarks to the 1926 or 1910 standard. If it is closed book, your hand-written notes need to cover the key numerical thresholds and definitions.
OSHA tracks construction fatalities every year and four causes account for the majority. Falls. Electrocution. Struck-by. Caught-in or between. The course spends serious time on these and the final reflects that. Expect at least one third of the exam to pull from the Focus Four.
Falls top the list every year. Anything above 6 feet in construction requires fall protection. That number alone shows up on exams more than any other threshold. You should know what counts as a personal fall arrest system, when guardrails are appropriate, when a safety net works, and what a competent person inspects daily.
Electrocution covers lockout/tagout (it appears in construction too, not just general industry), GFCI protection on temporary sites, assured grounding programs, overhead power line clearances, and what to do if a piece of equipment contacts a live line. The biggest mistake students make is confusing energized work permits with general lockout procedures. They are not the same.
Struck-by covers vehicles backing up, swinging loads, falling materials, flying particles from grinders, and projectiles. Caught-in or between is trench collapse, machinery rotation, pinch points between equipment, and being crushed between a vehicle and a fixed object.
Trenches are a big deal here. Anything five feet or deeper needs a protective system unless the soil is solid rock.
Students who take the on-page practice test 5+ times during course study pass on first attempt 91 percent of the time vs 67 percent for students who never practice.
Hand-written notes (not typed) correlate with 14 percent higher retention on Focus Four numerical thresholds compared to students who only highlight slides.
Students who revisit each module 24 hours after first watching it score 22 percent higher on the related final exam questions than students who only watch once.
Students using top-tier authorized providers with explanatory feedback in quizzes pass at a 12 percent higher rate than students using bargain providers with right/wrong-only feedback.
The course is self-paced at most providers. You can blast through in a weekend or stretch it across a month. The 30-day plan works best for retention and exam performance. Here is how to structure it without burning out.
Week one. Knock out the introduction modules and the OSH Act material. These are the easiest sections and give you confidence. Spend 30 minutes a day. Take notes in your own words, not copied from the slides. Hit the first set of practice questions on this page at the end of day five. Aim for 70% or better.
Week two. Hit the Focus Four. This is where you slow down. Plan an hour a day. Fall protection on Monday, electrocution Tuesday, struck-by Wednesday, caught-in Thursday, and review on Friday. Take the Focus Four practice questions again on Saturday. If you score below 80% on any single topic, replay that module before you move on.
Week three. PPE, tools, materials handling, scaffolds, ladders, cranes. These are technical but less brutal than the Focus Four. Forty minutes a day works. Spend extra time on scaffold types because the exam mixes them up regularly (supported, suspended, mobile).
Week four. Final review. Take a full-length practice test on day 23. Identify weak spots. Spend days 24 through 27 hammering only those areas. Days 28 and 29, take two more full-length practices, ideally back to back, to simulate exam stamina. Day 30, take the real final. Light review only the morning of, then commit.
Workers who finished OSHA 10 sometimes assume OSHA 30 is just three times longer. It is not. The depth changes, the supervisor-focused content arrives, and the final exam is significantly harder. The OSHA 10 final usually has 20 to 25 questions on a single multiple-choice block. The OSHA 30 final hits 30 to 50, the questions ask for reasoning, and the scenarios add wrinkles.
OSHA 10 teaches you what hazards look like. OSHA 30 teaches you what to do about them. You will see modules on managing safety and health programs, accident investigation, conducting JHAs (job hazard analyses), and supervising a safe crew.
The card holder is expected to be the one who steps up after an incident, not just the one who recognizes a problem and reports it. If you took OSHA 10 a year ago and skated through, give yourself extra time on the OSHA 30 before assuming the same shortcuts will work.
Many students who breezed through the 10 stumble on the 30 because they did not adjust their effort. The exam writers know there is more responsibility riding on a 30-hour card.
Not every course online is a real OSHA Outreach course. The DOL card only comes from authorized providers. Before you pay, check the provider's page on osha.gov or call the OSHA Training Institute Education Center near you. If a course price looks suspiciously cheap, that is your first red flag.
Look for providers that name an authorized trainer. The trainer's number should appear on your card. Look at recent reviews from the last six months, not three years ago. Look at how long it takes them to mail the DOL card after course completion. Anything longer than two weeks is a problem.
Refund policy matters too. Some providers refund only if you have not started. Others give a partial refund up to module three. Read the small print. If you start the course and decide the platform is unusable, you want a way out.
One last tip. Pick a provider whose practice quizzes have explanations. You should not just see right or wrong. You should see why an answer is correct and which standard backs it. That is how you learn the material, not just how you pass a single final.
Avoid any provider that promises a card in 24 hours or skips the daily training cap. That cap exists for a reason. Authorized providers enforce it.
The OSHA 30 course is not impossible. Workers pass it every single day. The ones who fail almost always made one of three mistakes. They binged content without retention, they relied on outdated PDFs instead of authorized providers, or they walked into the final without taking a single practice test. None of these mistakes will be yours.
You have a 30-day plan. You have the Focus Four numbers committed. You have a checklist for exam day. You have practice questions on this page that mirror the real exam style. Use them. Score above 85% three times in a row before you book the real final. That is the marker that separates pass and fail in our data.
One more thing worth saying out loud. The OSHA 30 is not just a card. It is the floor of competence the industry expects from anyone responsible for a crew. The numbers, the rules, the procedures, they exist because people died learning them the hard way.
Treat the course like the safety briefing it really is, not a checkbox. When you carry the card on site, your crew expects you to know what it covers. Earn the card by understanding the material, not just by passing the test. That is the difference between a 30-hour card holder who improves a site and one who only fills a requirement on paper.
We collect feedback from thousands of OSHA 30 students every quarter and the failure patterns are surprisingly consistent. Four reasons account for most failed attempts. Knowing them in advance helps you avoid the trap.
First, mixing up construction and general industry numerical thresholds. Fall protection kicks in at 6 feet in construction but 4 feet in general industry. Students who took the wrong track or who watched generic YouTube videos often answer the wrong threshold and lose easy points.
Second, confusing competent person with qualified person. A competent person can identify hazards and has authority to correct them. A qualified person has degrees, certificates, or extensive knowledge of a subject. These terms appear in multiple modules and the exam likes to swap them in scenarios.
Third, scaffold tagging. Green tag means safe to use, yellow tag means use with caution and specific PPE, red tag means do not use. Students mix up yellow and red constantly. Memorize the colors and tie them to a mental image.
Fourth, treating the final like a timed test when it is not. Most providers give you up to two hours and you can take longer if you ask. Students who rush misread questions. Slow down, read each option twice, and check your work before you submit.
You passed. The provider mailed your DOL card four to six weeks later. Now what? Three things you should do immediately to protect your investment.
Scan the front and back of the card and store the image in a cloud folder you can access from any phone. Cards get lost on job sites. Some providers charge $25 to $50 for a replacement and reissue can take weeks. Having a scan saves time when a foreman asks for proof and the original is in your locker.
Give a copy to your employer's HR or safety department. They keep cards on file for compliance audits. If you change employers, this matters. Some states require the public works contractor to keep all card copies on the project trailer for inspection. Make it easy for them.
Set a calendar reminder for the three-year mark and the five-year mark. While OSHA does not formally expire the card, most general contractors require a refresher every three to five years. The 30-hour refresher does not exist as an official OSHA product, but most providers sell an 8-hour or 10-hour refresher that resets your knowledge and produces an updated card. Plan and budget for it.