How To Perform A Job Safety Analysis (JSA)
A job safety analysis, often referred to as a JSA, is a proactive process used to identify potential hazards associated with a specific task and define controls to reduce risk. In construction and other high risk industries, JSAs help protect workers, improve compliance, and create consistency in how work is planned and executed.
This guide walks through what a job safety analysis is, why it matters, and how to perform one step by step.
What is a job safety analysis
A job safety analysis is a documented review of a job or task that breaks the work into individual steps, identifies hazards at each step, and outlines measures to eliminate or control those hazards before work begins.
JSAs may also be called job hazard analyses or task hazard analyses. Regardless of the name, the goal is the same: prevent incidents by planning for safety instead of reacting to problems.
Why job safety analyses are important
Job safety analyses play a critical role in maintaining safe jobsites. When performed correctly and consistently, they help teams:
Identify hazards before work starts
Reduce injuries and near misses
Improve worker awareness and accountability
Support OSHA and internal safety compliance
Create a repeatable safety planning process
JSAs also encourage communication between supervisors and crews, ensuring everyone understands the risks involved and how to work safely.
When to perform a JSA
A job safety analysis should be completed before starting:
New or unfamiliar tasks
High risk activities
Tasks involving new equipment, materials, or processes
Work after an incident or near miss
Jobs with a history of injuries
Many companies also require JSAs to be reviewed daily or whenever site conditions change.
Step by step: how to perform a job safety analysis
Step 1: select the job or task
Choose a specific job or activity to analyze. Focus on tasks that are:
High risk
Performed frequently
Complex or multi step
Associated with past incidents
Be specific. For example, analyze “installing roof trusses” rather than “framing work.”
Step 2: break the job into steps
Divide the task into clear, logical steps in the order they are performed. Each step should describe what is being done, not how safety is managed.
Keep steps simple and avoid combining too many actions into one step. Most JSAs include between five and ten steps.
Step 3: identify potential hazards
For each step, identify what could go wrong. Consider hazards related to:
Falls
Struck by or caught between objects
Electrical exposure
Equipment and tools
Ergonomics
Environmental conditions
Involve workers who perform the task regularly. Their experience often reveals risks that may not be obvious to supervisors or safety managers.
Step 4: determine control measures
Once hazards are identified, define how they will be controlled. Use the hierarchy of controls when possible:
Eliminate the hazard
Substitute safer methods or materials
Apply engineering controls
Establish administrative controls
Use personal protective equipment
Controls should be specific and actionable, not vague. For example, “use a guardrail system” is more effective than “be careful near edges.”
Step 5: document the JSA
Record the job steps, hazards, and control measures in a standardized JSA form. Documentation ensures consistency, supports compliance, and provides a reference for training.
Make sure the form includes:
Job or task name
Date and location
Names of workers involved
Identified hazards and controls
Signatures or acknowledgments
Step 6: review with the crew
Before work begins, review the JSA with all workers involved. Discuss each step, confirm understanding, and encourage questions.
This review helps ensure the JSA is more than a formality and reinforces shared responsibility for safety.
Step 7: update as conditions change
A job safety analysis is a living document. Update it when:
Site conditions change
New hazards are introduced
Equipment or materials change
A near miss or incident occurs
Regular updates keep JSAs relevant and effective.
Common mistakes to avoid
Even well intentioned JSAs can fall short. Avoid these common issues:
Using generic templates without task specific details
Rushing through the process
Failing to involve workers
Treating JSAs as paperwork only
Not updating JSAs when conditions change
A strong JSA reflects the real work being performed on the jobsite.
Making job safety analyses part of your safety culture
When JSAs are consistently used and reinforced, they become part of a broader safety culture. Teams that prioritize planning, communication, and accountability are better equipped to prevent incidents and protect their people.
Digital tools can also help streamline the JSA process by standardizing forms, improving visibility, and making it easier to complete and review analyses in the field.
Download the job safety analysis checklist
To help you put this process into action, we have created a downloadable job safety analysis safety checklist you can use on your jobsites.
This checklist helps teams:
Walk through each step of a task
Identify common jobsite hazards
Document control measures clearly
Ensure crews review and acknowledge safety plans
Download the job safety analysis safety checklist here:
Final thoughts
A job safety analysis is one of the most effective tools for identifying risks before work begins. By breaking tasks into steps, recognizing hazards, and implementing clear controls, construction teams can reduce injuries, improve compliance, and create safer jobsites.
Taking the time to perform a JSA is not just a requirement. It is an investment in your people and your projects.
