COHN — Certified Occupational Health
Nurse Exam 2026–2027 | Comprehensive
100-Question Practice Test with Answers &
Rationales| Pdf Access Already Graded A+.
Questions 1–25
1. What is the primary goal of occupational health nursing?
A. Treat illnesses after they occur
B. Promote worker health, safety, and well-being while preventing work-related injury and
illness
C. Reduce the cost of employee benefits
D. Provide only emergency care
Answer: B
Rationale: Occupational health nursing emphasizes prevention, health promotion, injury/illness
prevention, and protection of workers' health.
2. An occupational health nurse is assessing a workplace for respiratory hazards. Which
finding requires the most immediate attention?
A. Employees report occasional fatigue
B. Workers are exposed to an unidentified airborne chemical without respiratory protection
C. Employees request ergonomic chairs
D. The break room lacks nutritional posters
Answer: B
Rationale: An unidentified airborne chemical exposure may produce serious acute or chronic
health effects and requires immediate hazard assessment and control.
3. Which approach is considered the most effective method of controlling a workplace
hazard?
,A. Personal protective equipment
B. Administrative controls
C. Engineering controls
D. Elimination of the hazard
Answer: D
Rationale: The hierarchy of controls places elimination at the highest level because removing
the hazard prevents exposure altogether.
4. Which intervention is an example of an engineering control?
A. Employee training
B. Rotating employees between workstations
C. Installing local exhaust ventilation
D. Wearing gloves
Answer: C
Rationale: Engineering controls isolate workers from hazards through physical or mechanical
changes to the workplace.
5. Which intervention is an administrative control?
A. Machine guarding
B. Hazard elimination
C. Employee rotation to limit exposure time
D. Substitution of a toxic chemical
Answer: C
Rationale: Administrative controls change work practices, schedules, policies, or procedures to
reduce exposure.
6. A worker sustains a needlestick injury. What should the occupational health nurse do first?
A. Complete the workers' compensation paperwork
B. Determine the employee's vacation schedule
C. Initiate immediate first aid and exposure evaluation
D. Wait for symptoms to develop
, Answer: C
Rationale: Immediate cleansing/first aid and prompt exposure assessment are priorities
following a potentially infectious occupational exposure.
7. Which bloodborne pathogen has an available vaccine routinely recommended for
occupationally exposed workers?
A. Hepatitis B
B. HIV
C. Hepatitis C
D. Ebola
Answer: A
Rationale: Hepatitis B vaccination is an important preventive measure for workers with
occupational exposure to blood or potentially infectious materials.
8. Which worker has the highest occupational risk for bloodborne pathogen exposure?
A. Accountant
B. Medical laboratory technician handling blood specimens
C. Administrative assistant
D. Computer programmer
Answer: B
Rationale: Workers who directly handle blood or potentially infectious materials have increased
occupational exposure risk.
9. What is the purpose of a Safety Data Sheet (SDS)?
A. Document employee attendance
B. Provide information about chemical hazards, handling, storage, and emergency measures
C. Record employee performance
D. Replace workplace safety training
Answer: B
Rationale: SDSs provide standardized information about chemical hazards and safe handling,
storage, exposure control, and emergency response.
Nurse Exam 2026–2027 | Comprehensive
100-Question Practice Test with Answers &
Rationales| Pdf Access Already Graded A+.
Questions 1–25
1. What is the primary goal of occupational health nursing?
A. Treat illnesses after they occur
B. Promote worker health, safety, and well-being while preventing work-related injury and
illness
C. Reduce the cost of employee benefits
D. Provide only emergency care
Answer: B
Rationale: Occupational health nursing emphasizes prevention, health promotion, injury/illness
prevention, and protection of workers' health.
2. An occupational health nurse is assessing a workplace for respiratory hazards. Which
finding requires the most immediate attention?
A. Employees report occasional fatigue
B. Workers are exposed to an unidentified airborne chemical without respiratory protection
C. Employees request ergonomic chairs
D. The break room lacks nutritional posters
Answer: B
Rationale: An unidentified airborne chemical exposure may produce serious acute or chronic
health effects and requires immediate hazard assessment and control.
3. Which approach is considered the most effective method of controlling a workplace
hazard?
,A. Personal protective equipment
B. Administrative controls
C. Engineering controls
D. Elimination of the hazard
Answer: D
Rationale: The hierarchy of controls places elimination at the highest level because removing
the hazard prevents exposure altogether.
4. Which intervention is an example of an engineering control?
A. Employee training
B. Rotating employees between workstations
C. Installing local exhaust ventilation
D. Wearing gloves
Answer: C
Rationale: Engineering controls isolate workers from hazards through physical or mechanical
changes to the workplace.
5. Which intervention is an administrative control?
A. Machine guarding
B. Hazard elimination
C. Employee rotation to limit exposure time
D. Substitution of a toxic chemical
Answer: C
Rationale: Administrative controls change work practices, schedules, policies, or procedures to
reduce exposure.
6. A worker sustains a needlestick injury. What should the occupational health nurse do first?
A. Complete the workers' compensation paperwork
B. Determine the employee's vacation schedule
C. Initiate immediate first aid and exposure evaluation
D. Wait for symptoms to develop
, Answer: C
Rationale: Immediate cleansing/first aid and prompt exposure assessment are priorities
following a potentially infectious occupational exposure.
7. Which bloodborne pathogen has an available vaccine routinely recommended for
occupationally exposed workers?
A. Hepatitis B
B. HIV
C. Hepatitis C
D. Ebola
Answer: A
Rationale: Hepatitis B vaccination is an important preventive measure for workers with
occupational exposure to blood or potentially infectious materials.
8. Which worker has the highest occupational risk for bloodborne pathogen exposure?
A. Accountant
B. Medical laboratory technician handling blood specimens
C. Administrative assistant
D. Computer programmer
Answer: B
Rationale: Workers who directly handle blood or potentially infectious materials have increased
occupational exposure risk.
9. What is the purpose of a Safety Data Sheet (SDS)?
A. Document employee attendance
B. Provide information about chemical hazards, handling, storage, and emergency measures
C. Record employee performance
D. Replace workplace safety training
Answer: B
Rationale: SDSs provide standardized information about chemical hazards and safe handling,
storage, exposure control, and emergency response.
