A newly hired occupational health nurse specialist is asked to design a health service for a manufacturing site with rising musculoskeletal injuries. What should be the FIRST step in developing an effective occupational health program?

Conduct a comprehensive needs assessment

Implement ergonomic training sessions

Review workers’ compensation claims

When introducing a significant change to health surveillance procedures, what is the MOST important initial leadership action?

Explaining the reason and benefits for the change

Monitoring outcomes before communication

Revising policies without staff input

Occupational exposure limits are established primarily to:

Define acceptable risk thresholds

Eliminate all workplace hazards

Which practice BEST protects employee confidentiality in health surveillance programs?

Limiting access to authorized health professionals

Sharing results with supervisors

Storing records in general personnel files

Posting aggregate results publicly

Which practice BEST supports ethical health education in the workplace?

Providing accurate, evidence-based information

Mandatory participation without explanation

When managing organizational change, what is the MOST important factor for success?

Clear communication and staff involvement

Occupational exposure limits are intended to:

Define exposure levels associated with acceptable risk

Serve as disciplinary thresholds

An abnormal surveillance result is identified. What is the MOST appropriate next step?

Refer the employee for further evaluation

Ignore if the employee is asymptomatic

Remove the employee from work permanently

Which practice BEST supports ethical health education in occupational settings?

Providing accurate, evidence-based information

Mandatory participation without explanation

COHN-S Certified Occupational Health Nurse-Specialist Exam

Free COHN-S Certified Practice Questions

10 sample questions for the COHN-S Certified Occupational Health Nurse-Specialist Exam, with the correct answer and an explanation for each. No account needed. Try each one before you open the answer.

Sections covered on the exam: Developing Occupational Health Services and Programs, Program Evaluation/Assessing Organizational Culture, Health Education and Epidemiology, Management Principles/Leadership, Workplace Hazards, Industrial Hygiene, Emergency Response, Case Management, Worksite Assessment, Health Assessment, and Surveillance, Research, Regulations, and Information, Disaster Planning and Management.

Question 1 · Developing Occupational Health Services and Programs
A newly hired occupational health nurse specialist is asked to design a health service for a manufacturing site with rising musculoskeletal injuries. What should be the FIRST step in developing an effective occupational health program?
- A.Implement ergonomic training sessions
- B.Review workers’ compensation claims
- C.Conduct a comprehensive needs assessment
- D.Purchase ergonomic equipment
Show answer and explanation
Answer: C. Conduct a comprehensive needs assessment
A needs assessment identifies workforce risks, injury trends, job tasks, and organizational priorities. Program planning must begin with data collection before selecting interventions or resources.
Question 2 · Management Principles/Leadership
When introducing a significant change to health surveillance procedures, what is the MOST important initial leadership action?
- A.Enforcing immediate compliance
- B.Monitoring outcomes before communication
- C.Revising policies without staff input
- D.Explaining the reason and benefits for the change
Show answer and explanation
Answer: D. Explaining the reason and benefits for the change
Clear communication about the purpose and benefits of change builds trust, reduces resistance, and improves adoption.
Question 3 · Industrial Hygiene
Occupational exposure limits are established primarily to:
- A.Eliminate all workplace hazards
- B.Guide employee discipline
- C.Replace engineering controls
- D.Define acceptable risk thresholds
Show answer and explanation
Answer: D. Define acceptable risk thresholds
Exposure limits define levels at which most workers can be exposed without adverse health effects when proper controls are used.
Question 4 · Worksite Assessment, Health Assessment, and Surveillance
Which practice BEST protects employee confidentiality in health surveillance programs?
- A.Sharing results with supervisors
- B.Limiting access to authorized health professionals
- C.Storing records in general personnel files
- D.Posting aggregate results publicly
Show answer and explanation
Answer: B. Limiting access to authorized health professionals
Access to health information must be restricted to authorized personnel to maintain confidentiality and comply with ethical standards.
Question 5 · Health Education and Epidemiology
Which practice BEST supports ethical health education in the workplace?
- A.Providing accurate, evidence-based information
- B.Withholding program objectives
- C.Mandatory participation without explanation
- D.Limiting access to materials
Show answer and explanation
Answer: A. Providing accurate, evidence-based information
Ethical education requires accuracy, transparency, and respect for learners.
Question 6 · Developing Occupational Health Services and Programs
When ready, say “Start Practice Test 2”, and I will continue with Question 101 following the same rules and structure.
An occupational health nurse specialist is asked to expand services at a distribution center experiencing increased injury rates. Which data source should be reviewed FIRST to guide program planning?
- A.Vendor service catalogs
- B.Employee satisfaction surveys
- C.Injury and illness records
- D.National workforce statistics
Show answer and explanation
Answer: C. Injury and illness records
Injury and illness records provide direct, site-specific evidence of risk patterns and priorities. Program planning should begin with internal data before considering external resources.
Question 7 · Management Principles/Leadership
When managing organizational change, what is the MOST important factor for success?
- A.Speed of implementation
- B.Clear communication and staff involvement
- C.Strict enforcement of policies
- D.Limiting feedback
Show answer and explanation
Answer: B. Clear communication and staff involvement
Clear communication and staff involvement reduce resistance and support acceptance of change.
Question 8 · Industrial Hygiene
Occupational exposure limits are intended to:
- A.Eliminate all health risks
- B.Define exposure levels associated with acceptable risk
- C.Replace engineering controls
- D.Serve as disciplinary thresholds
Show answer and explanation
Answer: B. Define exposure levels associated with acceptable risk
Exposure limits define levels at which most workers can be exposed without expected adverse health effects when controls are applied.
Question 9 · Program Evaluation/Assessing Organizational Culture
An abnormal surveillance result is identified. What is the MOST appropriate next step?
- A.Ignore if the employee is asymptomatic
- B.Refer the employee for further evaluation
- C.Remove the employee from work permanently
- D.Notify coworkers immediately
Show answer and explanation
Answer: B. Refer the employee for further evaluation
Abnormal findings require timely follow-up and referral to determine cause and prevent progression.
Question 10 · Health Education and Epidemiology
Which practice BEST supports ethical health education in occupational settings?
- A.Providing accurate, evidence-based information
- B.Withholding program objectives
- C.Mandatory participation without explanation
- D.Limiting access to materials
Show answer and explanation
Answer: A. Providing accurate, evidence-based information
Ethical education requires accuracy, transparency, and respect for learners.

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