6 Benefits of Job Hazard Analysis on Construction Sites

A job hazard analysis (JHA) takes one task, splits it into the steps the crew will follow, and lists the hazards and controls for each step. OSHA’s guide to the method, Publication 3071, calls it a technique that focuses on job tasks as a way to identify hazards before they occur.

We first published this article in 2022. This update corrects what the old version said about OSHA requirements and ties each benefit to construction work.

1. Hazards get found before work starts

Writing a JHA makes the foreman and the crew walk through the task before anyone picks up a tool. For each step, OSHA 3071 suggests asking what can go wrong, what the consequences would be, how it could happen, and how likely it is.

That conversation catches problems while they are still cheap to fix. A deck opening that needs a cover is easier to deal with at the morning meeting than after the rebar bundles have landed next to it. If you find a hazard that poses an immediate danger to someone’s life or health, OSHA 3071 says to act right away and finish the analysis afterward.

2. The crew works from one agreed plan

Once the steps and controls are on paper, the foreman, the crew, and anyone who joins midweek all see the same sequence. OSHA 3071 points out that a JHA is also a useful tool for training new employees in the steps of the job.

Write each control so a person on the crew can check it in the field, for example “guardrail installed on the east edge before bundles land.” You can build the JHA in the free JHA builder or print a blank form from the templates page.

3. It supports the OSHA rules that do apply

The 2022 version of this article said OSHA requires employers to conduct a JHA for any job that could cause death or serious injury. That statement was wrong. Federal OSHA recommends JHAs and explains how to do them in Publication 3071, and it has no general construction rule requiring a written JHA for every task.

Several federal rules do apply to every construction employer, and a JHA helps you meet them:

• 29 CFR 1926.20(b) makes the employer responsible for the safety programs needed to comply with Part 1926. Those programs must include frequent and regular inspections of the job site, materials, and equipment by competent persons the employer designates.
• 29 CFR 1926.21(b)(2) requires the employer to instruct each employee in recognizing and avoiding unsafe conditions and in the regulations that apply to their work.
• Section 5(a)(1) of the OSH Act, the General Duty Clause, requires each employer to provide a workplace free from recognized hazards that are causing or are likely to cause death or serious physical harm.

These rules do not name the JHA or any other form. A JHA that the crew reviews and signs is one way to record the hazards you found on a task and the instruction the crew received about them.

Federal OSHA sets the baseline. State plans such as Cal/OSHA must be at least as effective as federal OSHA and can be stricter, so check your state plan’s standards if you work in one of those states.

When a contract requires a JHA

A contract can go further than OSHA. An owner or general contractor can require a JHA or a daily pre-task plan in the subcontract or the site safety plan. On U.S. Army Corps of Engineers (USACE) work, the current EM 385-1-1, effective 15 March 2024, requires an Activity Hazard Analysis (AHA) before each work activity, task, or definable feature of work begins. The manual accepts JSAs, JHAs, and similar tools in place of an AHA as long as they collect the same data an AHA requires.

4. The workers who do the job get a say

OSHA 3071 tells employers to involve employees in the analysis because they have a unique understanding of the job. It says their involvement helps minimize oversights and gets workers to buy in to the solutions. An ironworker with years of tying mats knows where the pinch points and trip hazards show up, and that knowledge belongs on the form.

At the review, ask the crew to name the hazards for each step before you read yours. Write down what they say, including items you already had.

5. Procedures stay current when the job changes

OSHA 3071 puts jobs that are new to your operation, or that have changed in process or procedure, on its short list of jobs to analyze first. It also recommends reviewing a JHA after any injury or illness on that job and training every affected employee whenever you revise it.

On a construction site, the conditions behind a JHA change often. A different crane, a new sub working overhead, rain on the deck, or a crew member who has never done the task are all reasons to pull the JHA out and update it. Re-score any changed step with the 5x5 risk matrix and have the crew initial the change. For edge work, start the recheck with the hazard library page on falls from height.

6. Fewer injuries and lower claim costs

OSHA 3071 says supervisors who use JHA findings to eliminate and prevent hazards are likely to see fewer worker injuries and illnesses, safer and more effective work methods, and reduced workers’ compensation costs. Fewer injuries means fewer workers’ compensation claims to manage.

Be careful with promises about premiums. A JHA program does not automatically lower what you pay for insurance, and the pricing decision belongs to your carrier. OSHA 3071 lists your insurance company as one source of help with job hazard analysis, so ask whether your carrier’s loss-control staff will review your JHAs or help you write them.

Writing your first JHA

The guide how to write a job hazard analysis goes through the process step by step with a worked rebar example. The 5x5 risk matrix guide explains how to score each step before and after controls, and the free JHA builder does the scoring for you.