COHN-S vs CSP: Which Occupational Health Specialist Certification Is Right for You?
Comparing Occupational Health Nursing and Safety Professional Credentials
The COHN-S (Certified Occupational Health Nurse-Specialist) from ABOHN and the CSP (Certified Safety Professional) from BCSP are both respected credentials in workplace health and safety, but they serve different professional roles.
What Is the COHN-S?
The COHN-S validates advanced expertise in occupational health nursing at the specialist level — including program management, policy development, and strategic leadership.
- •Certifying Body: ABOHN
- •Questions: 160 (135 scored + 25 pretest)
- •Time Limit: 3 hours
- •Eligibility: Bachelor’s degree + RN license + 3,000 hours OHN experience in 5 years
What Is the CSP?
The CSP validates expertise in safety management — hazard identification, risk assessment, safety program design, and regulatory compliance. It’s a broader safety credential, not specific to nursing.
- •Certifying Body: BCSP (Board of Certified Safety Professionals)
- •Focus: Workplace safety and health management
- •Typical Roles: Safety manager, safety director, EHS professional
Key Differences
Frequently Asked Questions
Can an RN hold both the COHN-S and CSP?
Yes. Some occupational health professionals pursue both credentials to demonstrate expertise in both clinical occupational health and safety management.
Which is more recognized — COHN-S or CSP?
Both are highly respected in their respective fields. The COHN-S is the premier credential for occupational health nurses; the CSP is the premier credential for safety professionals. Choose based on your professional identity and career goals.
Does the COHN-S cover safety topics?
Yes. The COHN-S exam includes industrial hygiene, hazard recognition, and regulatory compliance. However, its primary focus is occupational health nursing practice, not engineering-based safety management.
Frequently Asked Questions
What is the COHN-S exam?
The COHN-S is a standardized exam. For a comprehensive study guide with practice questions and full-length exams, see our COHN-S Study Guide.
How should I prepare for the COHN-S?
Start with a structured study plan, use official exam blueprints, and practice with realistic exam questions. Our COHN-S Study Guide covers the complete exam content with detailed rationales.
Where can I find COHN-S practice questions?
Our COHN-S Study Guide includes full-length practice exams with detailed answer rationales covering every content area on the actual exam.
Related Resources
Ready to Take the Next Step?
Our COHN-S Study Guide covers every content area with practice questions and detailed answer rationales.