Prevention
How to write a job hazard analysis step by step on construction sites
For subcontractors and safety managers: a job hazard analysis breaks a task into steps, identifies hazards for each step and records the planned controls. Build it with people who understand the work, then have the responsible team review it before the crew relies on it.
By Reldro · · 2 min read
The practical starting point
For your subcontractor crews, use this guidance with the current work phase, trade responsibilities and approved procedures in view. Keep your safety manager involved in record reviews and follow-up. This guidance supports record keeping and coordination, not technical authorization to carry out the work.
A job hazard analysis breaks a task into steps, identifies hazards for each step and records the planned controls. Build it with people who understand the work, then have the responsible team review it before the crew relies on it.
Start with the actual task
Describe the work area, equipment and method instead of copying a task title into an old plan. Involve experienced workers and the competent people responsible for assessment. Relevant requirements and site procedures should guide control selection; this article is an organizing method, not a complete task assessment.
What to include
Keep the record understandable to someone who was not present. Clear details help the reviewer ask the right questions and decide what further information is needed.
- Break the job into a practical sequence.
- Identify hazards in each step.
- Record specific planned controls.
- Identify questions needing competent review.
A setup-and-cleanup example
A construction crew plans an installation task. The draft covers the main activity but omits moving equipment into place and restoring the area afterward. Reviewing the full sequence with the crew helps surface those missing steps and the hazards the responsible team needs to assess.
Review and follow through
Agree how your team will use the record before rolling out a new form. Check a few real examples with the people responsible for the work, then refine unclear wording and ownership gaps.
- Review the plan with the assigned crew.
- Confirm understanding before sign-off.
- Keep the reviewed version available.
- Reassess when the work or conditions change.
The takeaway
A JHA connects steps, hazards and controls for the actual job. A signature records participation, not proof that every risk has been resolved.
Sources and further reading
References for this article, published October 6, 2026. Product scope and requirements can change. Confirm details with the provider and your safety team. Guidance from a specific jurisdiction may not apply to your construction project.