What is the main difference between OSHA 10 and OSHA 30?

The main difference is the duration and depth of training, with OSHA 10 providing a 10-hour general awareness course and OSHA 30 offering a 30-hour comprehensive program for supervisors and safety personnel.

Which is better for a construction worker, OSHA 10 or OSHA 30?

OSHA 30 is better for construction workers who need supervisory or safety management roles, while OSHA 10 is sufficient for entry-level workers who only need basic hazard recognition training.

How much does OSHA 10 and OSHA 30 cost?

The cost varies by provider, but OSHA 10 typically ranges from $60 to $100 and OSHA 30 ranges from $160 to $250, with online courses generally being cheaper than classroom options.

Which OSHA course has a higher safety risk if not completed?

OSHA 30 carries a higher safety risk if not completed because it trains supervisors to identify and control workplace hazards that could affect entire crews, whereas OSHA 10 only covers individual worker safety basics.

Is OSHA 10 a prerequisite for taking OSHA 30?

No, OSHA 10 is not a formal prerequisite for OSHA 30, but taking OSHA 10 first helps you grasp foundational concepts and makes the more advanced OSHA 30 material easier to understand.

What is a common beginner mistake when choosing between OSHA 10 and OSHA 30?

A common beginner mistake is assuming OSHA 10 is a shorter version of OSHA 30, when in reality they cover different content depths, with OSHA 30 including detailed modules on safety programs and management responsibilities.

Can OSHA 10 and OSHA 30 be used interchangeably for job requirements?

No, they cannot be used interchangeably because most employers and contracts specifically require either OSHA 10 or OSHA 30, and accepting the wrong one can disqualify you from a job or project.

What is a real-world use case for OSHA 10 versus OSHA 30?

A real-world use case is a general laborer taking OSHA 10 to work on a residential site, while a site superintendent takes OSHA 30 to oversee commercial construction projects and comply with client safety mandates.

Can I switch from OSHA 10 to OSHA 30 after starting a job?

Yes, you can switch from OSHA 10 to OSHA 30 after starting a job, but you must complete the full 30-hour course because OSHA does not offer credit for prior OSHA 10 training hours.

Are OSHA 10 and OSHA 30 valid for the same period of time?

Yes, both OSHA 10 and OSHA 30 cards are valid for the same period of five years, after which you must retake the course to maintain your certification.

Difference Between

Difference Between Osha 10 and Osha 30

Written byNex Virox Team

Editorial Team

Reviewed byVarshal Nirbhavane

Senior SEO & Organic Growth Professional · 5+ years

Published: September 6, 202618 min read

Quick answer

The main difference between Osha 10 and Osha 30 is that Osha 10 is a 10-hour general industry safety course, while Osha 30 is a 30-hour general industry safety course. Osha 10 is a basic hazard awareness introduction, while Osha 30 is a comprehensive supervisor-level training.

Key takeaways

Core distinction: OSHA 10 targets entry-level workers, while OSHA 30 suits supervisors and safety managers.
How each works: OSHA 10 covers basic hazard recognition in ten hours; OSHA 30 provides in-depth safety training.
Cost and effort: OSHA 10 costs less and takes one to two days, whereas OSHA 30 requires four to five days.
Best-fit use case: Choose OSHA 10 for general construction workers, but OSHA 30 for those in leadership roles.
Common decision mistake: Many wrongly pick OSHA 30 for all staff, wasting time and money on unneeded depth.

Table of Contents18 sections

Difference Between Osha 10 and Osha 30: Comparison Table

Aspect	Osha 10	Osha 30
Definition	A 10-hour introductory hazard awareness course for entry-level workers.	A 30-hour comprehensive safety course for supervisors and safety personnel.
Purpose	Teaches basic recognition and prevention of common workplace hazards.	Provides in-depth hazard identification and safety management training for leadership roles.
Core Mechanism	Uses interactive modules and case studies to build foundational safety literacy.	Employs detailed scenario analysis and risk assessment exercises for complex situations.
Training Hours	Requires a minimum of 10 hours of instructional time.	Requires a minimum of 30 hours of instructional time.
Target Audience	Designed for general industry workers and day laborers.	Designed for supervisors, managers, and safety committee members.
Curriculum Depth	Covers only the most critical hazard categories like falls and struck-by.	Explores each hazard category with additional topics like lockout/tagout and PPE.
Course Content	Focuses on worker rights, hazard recognition, and basic prevention methods.	Adds management duties, safety program development, and employee training techniques.
Regulatory Status	Not a certification; it is a voluntary awareness training card.	Not a certification; it is a voluntary training card for advanced knowledge.
Card Issuance	Issued as an OSHA 10 card upon successful completion.	Issued as an OSHA 30 card upon successful completion.
Card Validity	Card does not expire and requires no renewal.	Card does not expire and requires no renewal.
Prerequisites	Requires no prior safety training or experience.	Requires no formal prerequisites but assumes basic workplace knowledge.
Course Format	Often delivered in one or two consecutive days.	Usually spread over multiple days or weeks to cover material.
Assessment Method	Includes a final quiz with a passing score requirement.	Includes a final exam plus periodic quizzes and interactive activities.
Passing Score	Requires a score of at least 70 percent on the final quiz.	Requires a score of at least 70 percent on the final exam.
Course Cost	Typically costs less due to shorter duration and fewer materials.	Typically costs significantly more due to extended hours and content.
Time Commitment	Requires a single workday or two half-days of training.	Requires nearly a full work week or several evening sessions.
Employer Use	Often used for onboarding new hires and temporary staff.	Often used to prepare candidates for promotion to supervisory roles.
Hazard Coverage	Covers about six core hazard categories in brief detail.	Covers over a dozen hazard categories with extensive detail.
Interactivity Level	Uses basic quizzes and simple group discussions.	Includes workshops, case studies, and hands-on group activities.
Learning Outcome	Produces workers who can identify hazards and report them.	Produces leaders who can assess risks and implement controls.
Responsibility Focus	Emphasizes individual worker safety and personal responsibility.	Emphasizes employer and supervisor responsibility for site safety.
Site Application	Suited for general construction sites with low hazard complexity.	Suited for large, complex sites with multiple high-risk operations.
Industry Scope	Available for general industry and construction sectors.	Available for general industry and construction sectors.
State Recognition	Accepted by most states but not a legal job requirement.	Accepted by most states and often listed in job postings.
Job Requirement	Rarely mandatory; sometimes requested for entry-level roles.	Frequently required by employers for foreman or superintendent roles.
Instructor Role	Instructor covers basics and answers simple questions.	Instructor facilitates deep discussions and complex problem-solving.
Material Depth	Provides a broad overview without deep technical detail.	Provides detailed regulations, standards, and compliance procedures.
Retention Rate	Shorter course may lead to lower long-term retention of details.	Longer course with practice often improves retention of procedures.
Career Impact	Adds a basic credential to a worker’s resume.	Adds a strong credential that supports advancement to safety roles.
Best Fit Scenario	Ideal for new hires needing quick hazard awareness training.	Ideal for experienced workers taking on safety leadership duties.

What Is Osha 10?

Osha 10 is a foundational workplace safety training course for entry-level workers. It provides a general overview of common hazards and workers' rights. The program exists to help employees recognize dangers and prevent accidents before they happen.

Definition of Osha 10

Osha 10 is a voluntary safety orientation program developed by the Occupational Safety and Health Administration. It delivers roughly ten hours of instruction covering hazard recognition, safety standards, and employee rights under the OSH Act. It is designed for general industry and construction workers.

Key Characteristics of Osha 10

Characteristic	What It Means in Practice
Introductory Level	It teaches basic hazard awareness to workers with little or no prior safety training.
Ten-Hour Duration	Course content is delivered over roughly ten hours of structured classroom or online instruction.
Voluntary Participation	Most employers do not require it, though many companies use it as a hiring preference.
No Certification Card	Participants receive a wallet card, not an official OSHA certification or credential.
Hazard Recognition Focus	Training emphasizes spotting common dangers like falls, electrical risks, and chemical exposures.
Workers' Rights Coverage	It explains the right to a safe workplace, filing complaints, and requesting OSHA inspections.
Employer Responsibilities	It outlines what employers must do to maintain compliance with federal safety regulations.
General Industry Scope	The core curriculum applies to manufacturing, warehouses, retail, and healthcare settings.
No Expiration Date	The training card does not expire, though many employers require refresher courses.
Trainer-Led Delivery	Courses are taught by OSHA-authorized trainers who use standard curriculum materials.

Common Examples of Osha 10

Warehouse Associate – Covers forklift safety and proper lifting techniques for distribution centers.
Retail Store Employee – Addresses slip-and-fall prevention and safe handling of box cutters.
Manufacturing Line Worker – Teaches machine guarding and lockout/tagout procedures for factory floors.
Construction Laborer – Introduces fall protection and personal protective equipment basics on job sites.
Healthcare Aide – Focuses on bloodborne pathogens and safe patient handling in clinics.
Restaurant Kitchen Staff – Covers burn prevention, chemical safety, and proper knife handling.
Janitorial Staff – Explains safe handling of cleaning chemicals and electrical hazards near water.
Landscaping Worker – Teaches outdoor heat stress prevention and power tool safety.
Logistics Driver – Includes safe loading dock practices and vehicle safety basics.
Office Worker – Reviews ergonomics, fire safety, and emergency evacuation procedures.

Advantages and Limitations of Osha 10

Advantages	Limitations
It builds basic hazard awareness for new employees quickly.	It lacks depth for complex or high-risk job tasks.
It is a low-cost training option for small businesses.	It does not satisfy most employer-specific safety requirements.
It helps workers understand their legal rights on the job.	It provides no legal protection against employer retaliation.
It is widely recognized across many industries.	It is not a substitute for hands-on, site-specific training.
It can be completed in a short time frame.	It gives no formal certification or professional credential.
It teaches practical, everyday hazard recognition skills.	It oversimplifies complex safety scenarios workers face.
It is often a prerequisite for better job opportunities.	It does not guarantee a job or higher pay.
It covers a broad range of common workplace hazards.	It does not cover specialized hazards like confined spaces.
It is available in both classroom and online formats.	It is not accepted as proof of competency by all employers.
It introduces workers to OSHA standards and procedures.	It is not a substitute for a full OSHA compliance audit.

What Is Osha 30?

Osha 30 is a 30-hour OSHA Outreach training course for workers and supervisors in construction. It teaches hazard recognition, safety standards, and worker rights. The course exists to prepare individuals for safety leadership roles on active job sites.

Definition of Osha 30

Osha 30 is a voluntary, 30-hour occupational safety and health training program authorized by OSHA. It provides comprehensive instruction on hazard identification, regulatory compliance, and accident prevention. The curriculum targets construction industry supervisors who must enforce safety practices among their crews.

Key Characteristics of Osha 30

Characteristic	What It Means in Practice
30-Hour Duration	Requires roughly 30 classroom hours, typically spread over four or five days.
Supervisor Focus	Designed for foremen, superintendents, and lead workers with safety duties.
Construction Specific	Curriculum covers hazards unique to building sites, not general industry.
DOL Card	Completers receive a Department of Labor wallet card as proof of training.
Voluntary Status	Not required by federal law, but many employers and unions mandate it.
Interactive Sessions	Instructor-led classes include discussions, case studies, and group activities.
Hazard Recognition	Teaches workers to spot dangers like falls, struck-by, and caught-in hazards.
Regulatory Knowledge	Covers 29 CFR 1926 standards that govern construction workplace safety.
No Expiration	The DOL card does not expire, though employers may require refreshers.
Instructor Led	Must be taught by an OSHA-authorized trainer, not self-paced online only.

Common Examples of Osha 30

Turner Construction – mandates Osha 30 for all site superintendents and project managers.
Gilbane Building Company – requires Osha 30 for field supervisors on federal projects.
International Union of Operating Engineers – offers Osha 30 to train apprentice heavy-equipment operators.
New York City DOB – accepts Osha 30 toward Site Safety Training card requirements.
Boston Water and Sewer Commission – mandates Osha 30 for contractors working on utility projects.
University of California – requires Osha 30 for construction managers on campus builds.
Mortenson Construction – provides Osha 30 to all field leadership before project start.
National Electrical Contractors Association – uses Osha 30 in apprenticeship programs for electricians.
Skanska USA – mandates Osha 30 for safety coordinators on high-rise developments.
Associated General Contractors – lists Osha 30 as a standard credential for member training.

Advantages and Limitations of Osha 30

Advantages	Limitations
Builds deep hazard recognition skills for complex construction environments.	Requires 30 hours of time, which is hard for busy workers to schedule.
Improves job promotion prospects for workers seeking supervisor roles.	Does not certify competency; it only verifies course attendance.
Helps employers meet client contract requirements on large projects.	Card does not expire, so knowledge may become outdated over years.
Teaches practical OSHA standards that directly reduce on-site injuries.	Cost ranges from $150 to $300, which some small firms cannot fund.
Provides a recognized credential that transfers across employers.	Online versions may lack the hands-on interaction of classroom training.
Encourages proactive safety culture among crew leaders.	Does not replace site-specific training required by individual employers.
Covers fall protection, the leading cause of construction fatalities.	Instructor quality varies, leading to inconsistent learning outcomes.
Often satisfies OSHA's recommended training for supervisory staff.	Not legally required, so some workers see it as optional effort.
Enhances communication skills for reporting hazards to management.	Material can feel repetitive for workers with years of field experience.
Supports union apprenticeship programs with structured safety education.	Does not grant any certification to teach or train other workers.

Similarities Between Osha 10 and Osha 30

Shared Aspect	How Osha 10 and Osha 30 Are Alike
Core purpose	Osha 10 and Osha 30 both teach workplace hazard recognition and prevention fundamentals to reduce injuries.
Governing body	Osha 10 and Osha 30 are both developed and administered by the Occupational Safety and Health Administration.
Training category	Osha 10 and Osha 30 both fall under OSHA's voluntary outreach training program for general industry or construction.
Primary audience	Osha 10 and Osha 30 both target workers and supervisors who need formal safety education.
Curriculum source	Osha 10 and Osha 30 both use OSHA's standard 29 CFR regulations as their core content foundation.
Hazard focus	Osha 10 and Osha 30 both emphasize identifying common physical and chemical hazards in the workplace.
Regulatory basis	Osha 10 and Osha 30 both reference the same federal safety standards for construction or general industry.
Delivery method	Osha 10 and Osha 30 both offer in-person classroom sessions and online training options.
Instructor quality	Osha 10 and Osha 30 both require trainers who are OSHA-authorized and certified to teach.
Completion card	Osha 10 and Osha 30 both provide a DOL wallet card as proof of successful course completion.
Card validity	Osha 10 and Osha 30 both issue cards that do not expire and require no renewal.
Certificate access	Osha 10 and Osha 30 both offer printable certificates of completion immediately after finishing the course.
Course language	Osha 10 and Osha 30 both provide training materials in English and Spanish.
Industry options	Osha 10 and Osha 30 both offer separate versions for construction and general industry sectors.
Assessment method	Osha 10 and Osha 30 both require passing a final exam to earn the completion credential.
Passing score	Osha 10 and Osha 30 both require a minimum score of 70 percent on the final exam.
Retake policy	Osha 10 and Osha 30 both allow unlimited exam retakes at no additional cost.
Safety culture	Osha 10 and Osha 30 both promote a proactive safety culture across entire organizations.
Legal standing	Osha 10 and Osha 30 both serve as voluntary training, not a legal certification requirement.
Employer value	Osha 10 and Osha 30 both help employers demonstrate due diligence in worker safety efforts.
Worker rights	Osha 10 and Osha 30 both cover employee rights and employer responsibilities under OSHA law.
Emergency prep	Osha 10 and Osha 30 both include emergency action plans and fire protection protocols.
PPE training	Osha 10 and Osha 30 both teach proper selection and use of personal protective equipment.
Hazard comm	Osha 10 and Osha 30 both cover chemical labeling and Safety Data Sheets for hazard communication.
Fall protection	Osha 10 and Osha 30 both address fall hazards and protective systems for elevated work.
Recordkeeping rules	Osha 10 and Osha 30 both explain OSHA's injury and illness reporting requirements.
Accident reduction	Osha 10 and Osha 30 both aim to lower incident rates through increased worker awareness.
Career benefit	Osha 10 and Osha 30 both enhance a worker's resume and employment prospects in safety-sensitive fields.
Course updates	Osha 10 and Osha 30 both align with the latest OSHA regulatory changes and standards.
Training duration	Osha 10 and Osha 30 both require completion within a set timeframe, typically 30 days.

Osha 10 or Osha 30: Which Should You Choose?

The single variable that decides it for most people is your employer's requirement. If your job site mandates a specific card, that card wins. If not, choose based on your role: general safety awareness points to Osha 10, while supervisory responsibility points to Osha 30.

When to Use Osha 10

Choose Osha 10 when you are an entry-level worker who needs basic hazard recognition. It fits short-term projects, budget-constrained training, or volunteer work. Pick it for general labor roles with no supervisory duties, or when your employer only requires a two-day awareness course.

When to Use Osha 30

Choose Osha 30 when you hold supervisory or safety-management duties on a construction site. It suits project managers, site superintendents, and safety officers. Pick it for long-term employment, union requirements, or when your job involves conducting safety briefings or enforcing compliance among other workers.

Common Misconceptions About Osha 10 and Osha 30

Common Myth	The Reality
OSHA 10 and OSHA 30 are the exact same course with different names.	OSHA 10 provides 10 hours of basic hazard awareness training, while OSHA 30 delivers 30 hours of comprehensive supervisor-level safety instruction.
OSHA 30 is simply OSHA 10 with twenty extra hours of the same material.	OSHA 30 covers advanced topics like safety program management and hazard communication, which OSHA 10 does not address in its curriculum.
OSHA 10 certification never expires and remains valid for your entire career.	OSHA 10 cards from most authorized trainers expire after five years, requiring workers to retake the course for updated certification.
OSHA 30 certification is legally required for every construction site manager.	OSHA 30 is not a federal legal requirement, but many employers and specific contractors mandate it for supervisors and project leads.
OSHA 10 qualifies you to work on any construction site in America.	OSHA 10 only satisfies basic training for entry-level workers, and many sites require site-specific orientation or OSHA 30 for certain roles.
OSHA 30 makes you a certified safety professional or official OSHA inspector.	OSHA 30 only provides safety training; it does not certify you as an inspector or replace credentials like a CSP designation.
OSHA 10 and OSHA 30 both cover identical fall protection requirements.	OSHA 10 introduces basic fall hazards, while OSHA 30 details fall protection systems, ladder safety, and scaffold regulations in greater depth.
Taking OSHA 10 online is always faster and easier than the classroom version.	Online OSHA 10 still requires exactly 10 hours of interactive content, and some employers reject online cards for certain high-risk projects.
OSHA 30 is only for construction workers, never for general industry employees.	OSHA 30 has separate construction and general industry versions, and the general industry track covers manufacturing and warehouse safety topics.
OSHA 10 teaches you everything you need to know about workplace safety.	OSHA 10 is an awareness-level course and does not cover specialized topics like confined space entry or process safety management in detail.
OSHA 30 certification guarantees you will get a promotion or a higher salary.	OSHA 30 improves your qualifications, but promotions depend on experience, performance, and employer policies, not the card alone.
OSHA 10 and OSHA 30 cards are issued directly by the federal OSHA agency.	OSHA does not issue cards; authorized trainers and OSHA-authorized online providers issue the cards after course completion.
You can finish OSHA 10 in one hour by skipping through the video lessons.	OSHA 10 online courses use timers and quizzes that prevent skipping, and completing it honestly takes the full ten hours.
OSHA 30 is too advanced for anyone who is not already a safety manager.	OSHA 30 suits foremen, lead workers, and safety-conscious employees, and many apprentices take it to advance their construction careers.
OSHA 10 and OSHA 30 both require you to pass a proctored exam at a testing center.	Most OSHA 10 and OSHA 30 courses use online quizzes after each module, with no separate proctored final exam required.
OSHA 30 covers the same electrical safety topics as OSHA 10, just with more slides.	OSHA 30 expands electrical safety to include lockout/tagout procedures and arc flash awareness, which OSHA 10 only mentions briefly.
OSHA 10 is a waste of time if you already have years of construction experience.	OSHA 10 refreshes hazard recognition skills and is often required by employers, even for experienced workers on new job sites.
OSHA 30 certification is valid for life once you pass the course.	OSHA 30 cards typically expire after five years, and workers must retake the course to maintain valid certification status.
OSHA 10 and OSHA 30 are interchangeable for meeting employer training requirements.	Employers often specify which card they need, and OSHA 30 does not substitute for OSHA 10 when a client demands the shorter course.
OSHA 30 includes hands-on practical training with real equipment and machinery.	OSHA 30 is classroom or online instruction only, and it does not include hands-on equipment operation or practical skill assessments.
OSHA 10 covers all the same topics as OSHA 30, just in less detail overall.	OSHA 10 covers six core topics, while OSHA 30 includes those plus additional modules on cranes, excavations, and personal protective equipment.
OSHA 30 is required for any worker who steps foot on a construction site.	OSHA 30 is typically required for supervisors and safety personnel, while general laborers usually only need OSHA 10 training.
OSHA 10 and OSHA 30 courses are free and funded by the government.	OSHA 10 and OSHA 30 are paid courses, with prices ranging from $60 to $200, and OSHA does not subsidize individual training costs.
OSHA 30 teaches you how to write a complete site-specific safety plan.	OSHA 30 covers safety program elements, but it does not train you to author full site-specific safety plans, which require additional expertise.
OSHA 10 is only useful for construction workers, not for warehouse or factory staff.	OSHA 10 has a general industry version covering hazard communication and ergonomics, which applies to warehouse and manufacturing employees.
OSHA 30 certification is the same as a college degree in occupational safety.	OSHA 30 is a 30-hour training card, not an academic credential, and it does not replace a degree or professional safety certification.
OSHA 10 and OSHA 30 both require you to renew your card every single year.	OSHA 10 and OSHA 30 cards last five years, not one year, and renewal requires retaking the full course rather than a short refresher.
OSHA 30 guarantees you will pass a company safety audit with zero violations.	OSHA 30 improves knowledge, but audits check actual site conditions and practices, so training alone does not prevent all violations.
OSHA 10 is a prerequisite that you must complete before taking OSHA 30.	OSHA 10 is not a formal prerequisite for OSHA 30, and workers can take OSHA 30 directly if their employer requires it.
OSHA 30 covers the same hazard communication rules as OSHA 10 with no extra detail.	OSHA 30 expands hazard communication to include safety data sheets and labeling systems, while OSHA 10 only introduces the basic concept.

Conclusion

Difference Between Osha 10 and Osha 30 comes down to depth and role. OSHA 10 teaches basic hazard awareness for entry-level workers. OSHA 30 provides comprehensive safety training for supervisors and managers. Choose OSHA 10 for general employees. Choose OSHA 30 when you hold leadership responsibilities.

FAQs on Difference Between Osha 10 and Osha 30

What is the main difference between OSHA 10 and OSHA 30?: The main difference is the duration and depth of training, with OSHA 10 providing a 10-hour general awareness course and OSHA 30 offering a 30-hour comprehensive program for supervisors and safety personnel.
Which is better for a construction worker, OSHA 10 or OSHA 30?: OSHA 30 is better for construction workers who need supervisory or safety management roles, while OSHA 10 is sufficient for entry-level workers who only need basic hazard recognition training.
How much does OSHA 10 and OSHA 30 cost?: The cost varies by provider, but OSHA 10 typically ranges from $60 to $100 and OSHA 30 ranges from $160 to $250, with online courses generally being cheaper than classroom options.
Which OSHA course has a higher safety risk if not completed?: OSHA 30 carries a higher safety risk if not completed because it trains supervisors to identify and control workplace hazards that could affect entire crews, whereas OSHA 10 only covers individual worker safety basics.
Is OSHA 10 a prerequisite for taking OSHA 30?: No, OSHA 10 is not a formal prerequisite for OSHA 30, but taking OSHA 10 first helps you grasp foundational concepts and makes the more advanced OSHA 30 material easier to understand.
What is a common beginner mistake when choosing between OSHA 10 and OSHA 30?: A common beginner mistake is assuming OSHA 10 is a shorter version of OSHA 30, when in reality they cover different content depths, with OSHA 30 including detailed modules on safety programs and management responsibilities.
Can OSHA 10 and OSHA 30 be used interchangeably for job requirements?: No, they cannot be used interchangeably because most employers and contracts specifically require either OSHA 10 or OSHA 30, and accepting the wrong one can disqualify you from a job or project.
What is a real-world use case for OSHA 10 versus OSHA 30?: A real-world use case is a general laborer taking OSHA 10 to work on a residential site, while a site superintendent takes OSHA 30 to oversee commercial construction projects and comply with client safety mandates.
Can I switch from OSHA 10 to OSHA 30 after starting a job?: Yes, you can switch from OSHA 10 to OSHA 30 after starting a job, but you must complete the full 30-hour course because OSHA does not offer credit for prior OSHA 10 training hours.
Are OSHA 10 and OSHA 30 valid for the same period of time?: Yes, both OSHA 10 and OSHA 30 cards are valid for the same period of five years, after which you must retake the course to maintain your certification.