COSS - Certified Occupational Safety Specialist Job Safety Analysis (JSA) Questions and Answers — Questions and Answers
Question 1: When prioritizing which jobs to analyze first using a Job Safety Analysis (JSA), which of the following should be given the HIGHEST priority?
- Jobs that are performed most frequently by the largest number of employees.
- Jobs with a history of high injury or illness rates, or the potential for severe incidents. (Correct answer)
- Jobs that have recently been analyzed and have existing control measures in place.
- Non-routine jobs that are performed only by highly experienced senior personnel.
Correct answer: Jobs with a history of high injury or illness rates, or the potential for severe incidents.
OSHA and safety management best practices recommend prioritizing JSAs for jobs with the worst history of incidents (high frequency or severity) and those with the potential to cause severe harm, even if an incident has not yet occurred. This focuses resources on the greatest risks first.
Question 2: A COSS is leading a team to conduct a JSA for a new, complex task involving multiple workers. Which of the following is NOT considered a primary component of the standard JSA process?
- Breaking the job down into a sequence of steps.
- Identifying potential hazards within each step.
- Determining preventive measures and controls for each hazard.
- Calculating the return on investment (ROI) for the safety improvements. (Correct answer)
Correct answer: Calculating the return on investment (ROI) for the safety improvements.
The core steps of a JSA are: 1) Select the job, 2) Break the job into steps, 3) Identify potential hazards, and 4) Determine preventive measures. While cost-benefit analysis is a valid business practice, calculating the specific ROI is not a required, primary component of the JSA process itself, which focuses on hazard identification and control.
Question 3: During the 'Determine Preventive Measures' step of a JSA for a task that generates harmful dust, the team suggests several options. According to the hierarchy of controls, which of the following recommendations represents the MOST effective control measure?
- Mandating the use of N95 respirators for all workers performing the task.
- Implementing a new process that uses a wet-cutting method to eliminate dust generation. (Correct answer)
- Placing warning signs in the area to alert workers to the dust hazard.
- Rotating workers out of the dusty area every two hours to limit exposure time.
Correct answer: Implementing a new process that uses a wet-cutting method to eliminate dust generation.
The hierarchy of controls prioritizes elimination and substitution as the most effective methods. Using a wet-cutting method is an example of substitution or process modification that eliminates the hazard (airborne dust) at its source. Respirators (PPE), signs (administrative), and worker rotation (administrative) are all lower on the hierarchy and considered less effective.
Question 4: A manufacturing company has just installed a new piece of automated machinery. The task of clearing jams from the machine is identified as a new job requiring a JSA. What is the BEST method for the initial analysis of this task?
- Reviewing the manufacturer's manual alone to identify potential hazards.
- Waiting for a jam to occur and then performing the analysis during the event.
- Having an experienced supervisor write the JSA based on their previous experience with other machines.
- Observing a trained worker simulate the task and discussing the steps and hazards with a group of experienced workers and supervisors. (Correct answer)
Correct answer: Observing a trained worker simulate the task and discussing the steps and hazards with a group of experienced workers and supervisors.
The most effective JSAs involve observing the task being performed and engaging the workers and supervisors who are most familiar with the job. For a new task, simulating the process and having a discussion with a knowledgeable group allows for proactive hazard identification and leverages collective experience.
Question 5: Once a Job Safety Analysis (JSA) has been completed and documented, what is the most critical subsequent action to ensure its effectiveness?
- Filing the JSA in the safety department's records for compliance audits.
- Communicating the findings and providing training to all employees who perform the job. (Correct answer)
- Submitting the JSA to the company's insurance carrier to potentially lower premiums.
- Reviewing the JSA annually, regardless of whether the job has changed.
Correct answer: Communicating the findings and providing training to all employees who perform the job.
A JSA is ineffective if its findings are not shared. The results must be communicated to all workers who perform the task. This communication, often in the form of training, ensures that employees understand the hazards and the safe work procedures developed to control them.
Question 6: When breaking a job down into a sequence of steps for a JSA, what is a key principle to follow to ensure the breakdown is effective?
- Combine as many actions as possible into a single step to keep the JSA short.
- Focus only on the steps where injuries have occurred in the past.
- Keep the steps in the correct sequence of occurrence and avoid making them overly broad or too detailed. (Correct answer)
- List the steps in order from most hazardous to least hazardous.
Correct answer: Keep the steps in the correct sequence of occurrence and avoid making them overly broad or too detailed.
An effective JSA requires breaking the job down into its basic steps in the order they occur. The steps should not be too broad (e.g., 'service vehicle') or too narrow (e.g., 'turn wrench one-quarter turn'). A logical, sequential breakdown of distinct actions is necessary to properly identify hazards at each stage.
COSS - Certified Occupational Safety Specialist Job Safety Analysis (JSA) Questions and Answers
When prioritizing which jobs to analyze first using a Job Safety Analysis (JSA), which of the following should be given the HIGHEST priority?