OSHA 30 is the standard credential for foremen, superintendents and safety leads. Here's how to decide when to make the jump.
Is there an "upgrade" course?
Usually you take the full 30-hour course separately. OSHA does allow one upgrade path: the same trainer can continue a 10-hour student into the 30-hour class if all training, from the start of the 10-hour class to the end of the 30-hour class, is finished within six months. In that case the student returns the 10-hour card, and the trainer sends it back to the issuing organization in exchange for the 30-hour card. Outside that path, OSHA 10 hours do not count toward the 30.
When it makes sense
- The worker is being promoted to foreman or lead.
- A GC requires OSHA 30 for supervisors on your jobs.
- Nevada requires OSHA 30 for supervisors on construction sites.
- Philadelphia contractor licenses require at least one supervisor with OSHA 30 within five years.
- The worker is thinking about becoming an OSHA authorized trainer later. OSHA 30 is good background, but it is not the prerequisite: the OSHA 500 requires the OSHA 510 course plus five years of construction safety experience. See the trainer path tool.
How long it takes
Online: at least four days, because of the 7.5 hours/day limit, and online Outreach courses must be finished within six months of starting. In person: usually four days.
What extra content is in the 30
More management topics: safety programs, more detailed coverage of scaffolds, excavation, cranes, materials handling, and supervisor responsibilities.
OSHA 10 vs OSHA 30 at a glance
| OSHA 10 Construction | OSHA 30 Construction | |
|---|---|---|
| Who it is for | Entry-level workers | Foremen, supervisors, safety leads |
| Minimum hours | 10 | 30 |
| Mandatory topics | Intro to OSHA and the Focus Four hazards | Same, plus more elective and management topics |
| Online pace | At most 7.5 hours a day, so two days minimum | At most 7.5 hours a day, so four days minimum |
| Online completion window | Six months from starting | Six months from starting |
| Federal card expiry | Never | Never |
| Typical online price | About $60–$90 | About $160–$190 |
The time limits and topics come from the OSHA Outreach Training Program requirements; prices vary by provider. Make sure any online course is from an OSHA-authorized online provider. Our OSHA 10 vs 30 picker compares totals for a crew.
How the upgrade path works, step by step
The upgrade option is narrow. To use it:
- Same authorized trainer. The trainer who taught the 10-hour class must also teach the remaining hours of the 30-hour class.
- Six-month window. All training, from the first hour of the 10-hour class to the last hour of the 30-hour class, must be finished within six months.
- Card returned. The student gives back the 10-hour card. The trainer returns it to their authorizing training organization and requests a 30-hour card.
- Full 30-hour content. The student still needs every required topic and hour of the 30-hour course; the 10 hours count as part of the 30.
If any condition is missed (different trainer, more than six months, online 10 followed by a classroom 30 elsewhere) the worker takes the full 30-hour course. In practice most workers who "upgrade" simply sign up for an online OSHA 30.
Who on your crew should have OSHA 30
From a safety manager's point of view, I look at the job, not the title:
- Anyone who runs a crew without a superintendent on site. They make daily decisions about trenches, ladders, scaffolds and fall protection.
- Anyone named as competent person for scaffolds, excavations or fall protection. OSHA 30 does not make someone competent, but it gives useful background before specific competent-person training.
- The person who handles your safety program in a small company that has no full-time safety staff.
- Anyone who will deal with inspectors or GC safety managers. The 30-hour course covers inspections, citations and the employer's responsibilities in more depth.
- Workers on a supervisor track. Training them before promotion is better than after.
For laborers and apprentices, OSHA 10 is usually enough unless a GC or law requires more.
Where OSHA 30 is required
There is no federal requirement for OSHA 30. Requirements come from states, cities and contracts:
- Nevada: supervisors on construction sites need OSHA 30, within 15 days of hire under NRS 618.983, and since 2015 those cards do not expire. See our Nevada guide.
- New York City: site safety training (SST) rules under Local Law 196 set hour requirements for workers and supervisors; an OSHA 30 can count toward the supervisor card. See the NYC SST guide.
- Philadelphia: contractor license holders need at least one OSHA 30-trained supervisor. See the Philadelphia guide.
- GC contracts: many general contractors require OSHA 30 for foremen and superintendents. Check your subcontract and the site rules.
Our state requirement checker lists the rules by state.
Planning the training without losing a week of work
Online OSHA 30 takes at least four days at the daily limit, but most working supervisors do it over two or three weeks of evenings. Practical tips:
- Pay for the course and the time. If the training is required for the job, wages may be owed for training time; check your state wage rules.
- Schedule a deadline, not just a start date. Six months is a long window, and courses expire unfinished.
- Use slow seasons: winter for exterior trades, summer for school-work contractors.
- Check the provider on OSHA's list before paying.
- Record the card in your tracker the day it arrives. A plastic card can take weeks; keep the completion certificate meanwhile.
After OSHA 30: what comes next
OSHA 30 is a foundation. Depending on the work, supervisors usually need more specific training: competent-person courses for scaffolds, excavation and fall protection, first aid and CPR, and equipment evaluations. For a training path into teaching, see the OSHA 510 and 500 trainer path. Keep all of it in one training matrix.
Mistakes to avoid when choosing a course
Crews often lose money and time on the same handful of mistakes:
- Buying the wrong industry. OSHA 30 General Industry is not accepted on most construction sites. Buy Construction unless the worker is in a plant, warehouse or similar setting.
- Using an unauthorized provider. Some websites sell "OSHA-compliant" courses that do not issue a Department of Labor card. Check the provider against OSHA's list, or use our online OSHA course checker.
- Starting and stalling. Online courses have to be finished within six months of starting. Set a deadline.
- Losing the card. Replacement is usually only possible within five years of the class; see lost OSHA card replacement. Take a photo when the card arrives.
- Assuming the upgrade applies. Unless the same trainer delivers both parts within six months, plan on the full 30 hours.
Practicing before the final exam
The 30-hour course ends with a final exam, and online providers usually allow a limited number of attempts. A practice test helps a worker find weak areas, especially if English is a second language. Try our free OSHA 30 practice test, or the OSHA 10 practice test for new workers.
Sources and further reading
The upgrade and timing rules come from OSHA Outreach program documents.
- OSHA Outreach Training Program and its FAQ: upgrade path, daily limits and card rules.
- OSHA-authorized online providers.
- NRS 618.983 for Nevada supervisor requirements.