OSHA 10 vs OSHA 30 Training
Why this matters
OSHA 10 and OSHA 30 are the two most-common workplace safety credentials in the construction and skilled trades. Some jurisdictions mandate them (Massachusetts, Connecticut, New York City require OSHA 10 for construction workers; Nevada and Missouri require OSHA 30 for supervisors). Many commercial customers require them as a condition of being on their property. Many GC contracts require all sub-contractor workers to be OSHA 10 certified. A contractor whose technicians don't have these credentials cannot bid on most commercial work and is increasingly excluded from residential work in some markets. The training is straightforward and the cost is modest; getting it done is mostly a matter of scheduling.
What OSHA 10 covers
The OSHA 10-Hour Construction Safety course is the most-common entry-level safety credential. Content:
| Topic | Hours |
|---|---|
| Introduction to OSHA | 2 hours minimum |
| OSHA Focus Four hazards (Fall, Struck-by, Caught-in-or-between, Electrocution) | 4 hours minimum |
| Personal protective equipment (PPE) | 0.5 hours |
| Health hazards in construction | 2 hours |
| Materials handling | 1 hour |
| Hand and power tools | 0.5 hours |
| Total | 10 hours |
The course is delivered by an OSHA-authorized trainer in the Outreach Training Program. Format:
- Classroom or live online (synchronous)
- Self-paced online (some authorized providers)
- Hybrid (online plus on-site assessment)
Completion provides:
- OSHA 10-Hour wallet card (issued by OSHA, mailed by the trainer)
- Certificate of completion
The card has no expiration (some employers/jurisdictions require refresher every 5 years).
Cost: a modest typical for online; a moderate for classroom.
What OSHA 30 covers
The OSHA 30-Hour Construction Safety course is the more-comprehensive credential, typically required for supervisors and high-risk workers. Content:
- All OSHA 10 content
- Expanded coverage of each topic
- Additional topics including:
- Excavations and trenching
- Cranes, rigging, hoists
- Scaffold safety
- Welding and cutting
- Confined spaces
- Recordkeeping
- Safety and health programs
- Supervisor responsibilities
Total: 30 hours of training.
Cost: a moderate typical.
Who needs which
| Role | Recommended |
|---|---|
| Entry-level technician | OSHA 10 |
| Field technician | OSHA 10 (minimum) |
| Lead technician | OSHA 10 (OSHA 30 preferred) |
| Foreman / supervisor | OSHA 30 |
| Project manager | OSHA 30 |
| Safety officer | OSHA 30 + additional safety credentials |
| Trade-specific (electrician, welder) | OSHA 10 + trade-specific safety credentials |
For most service contractors:
- All techs hold OSHA 10 minimum
- Leads or supervisors hold OSHA 30
- Office staff who visit job sites may need OSHA 10
Jurisdictional requirements
| Jurisdiction | OSHA 10 / OSHA 30 requirements |
|---|---|
| Massachusetts | OSHA 10 required for construction workers; OSHA 30 for supervisors on public works |
| Connecticut | OSHA 10 required for construction workers on public works |
| New York City | OSHA 10 required for construction workers; OSHA 30 for supervisors |
| New Hampshire | OSHA 10 required for state-funded construction |
| Nevada | OSHA 30 required for supervisors on public projects |
| Missouri | OSHA 10 or 30 required for state projects depending on role |
| Federal projects | OSHA 10 typically required |
Verify against the specific jurisdiction; rules evolve.
How to schedule
Both OSHA 10 and OSHA 30 are widely available:
Online providers
- ClickSafety
- 360training
- OSHA Education Center
- OSHA.com (private vendor; not the official OSHA agency)
Online courses can be done by the technician on personal time or at the office during slow periods. Some employers pay for course time.
Classroom providers
- Local community colleges
- Trade association training centers
- Independent OSHA outreach trainers
- Some union training centers
Classroom takes the full 10 or 30 hours scheduled (typically 2 to 4 days).
Onsite training
For larger employers, an OSHA-authorized trainer can come to your facility and train the team:
- Cost-effective for 5+ techs simultaneously
- Convenient scheduling
- Customized to the trade
Verification
Verify the trainer is OSHA Outreach Training Program authorized:
- OSHA maintains a public list of authorized trainers
- The training provider should display the trainer's authorization
- Wallet cards are issued by the trainer following submission to OSHA
Beware:
- Courses claiming "OSHA approved" or "OSHA certified" - the language matters; "OSHA Outreach Training Program" is the official program
- Excessively cheap courses (per the application) may be diploma mills
- Courses without an authorized trainer don't produce a valid card
Recordkeeping
Maintain employee training records:
- Date of training
- Course (OSHA 10 or 30)
- Trainer / training provider
- Card number
- Date of expiration (if applicable)
These records support:
- Customer requests for verification (commercial customers often request)
- Insurance underwriting
- Annual workers comp audit
- OSHA inspection response
Trade-specific safety credentials beyond OSHA 10/30
For specific trades, additional safety credentials:
| Trade | Additional credentials |
|---|---|
| Electrician | NFPA 70E (arc flash) |
| Welder | Hot work permit training; specific welding qualifications |
| Worker in confined spaces | Confined space entry training |
| Trenching or excavation | Competent person training per OSHA |
| Working at heights | Fall protection competent person training |
| Asbestos / lead-paint work | RRP certification (lead); abatement training (asbestos) |
| Refrigerant handling | EPA Section 608 certification |
| Pesticide application | State applicator license |
These supplement OSHA 10/30; they don't replace it.
Annual refresher
OSHA 10/30 do not have a formal expiration date. However:
- Many employers require annual safety refresher training
- Some jurisdictions require refresher every 5 years
- The cards may be re-issued if requested
A weekly safety meeting (15 minutes covering a topic) is the standard alternative to formal annual refresher.
Specific topics in service trades
For most service trades, the highest-leverage OSHA topics:
- Fall protection: working above 6 ft in residential, 4 ft in commercial; harnesses, anchors, training
- Electrocution prevention: lock-out tag-out, GFCI use, proper PPE
- Lifting and ergonomics: backs and shoulders are the highest-claim injuries
- Vehicle safety: driving to and from sites; loading and unloading
- PPE: appropriate to the task; head, eye, foot, hearing, respiratory
References
- OSHA 29 CFR 1926 (Construction Safety Standards).
- OSHA Outreach Training Program guidelines.
- State workers compensation and safety regulations.
- NFPA 70E (Electrical Safety in the Workplace).
- Insurance industry safety guidelines.
- Manuall internal: Universal Documenting Service for Insurance, Universal Business Insurance Basics.