Quick answer: A Job Hazard Analysis breaks a task into steps, identifies the specific hazards at each step, and assigns specific controls. Every construction and industrial employer should have JHAs for each work type. This guide shows how to write one that passes real audits.

What A JHA Actually Is (And Isn't)

A JHA is not a safety pep talk. It's not a warning label. It's a systematic breakdown of a specific task, hazard by hazard, control by control.

The format is deceptively simple — three columns:

  1. Job Step (what you do)
  2. Hazard (what can go wrong)
  3. Control (how you prevent it)

What makes JHAs hard is the specificity. Generic JHAs fail. Site-specific, task-specific, hazard-specific JHAs pass.

Generic JHA vs Real JHA — The Difference That Matters

Generic (Fails Audits)

Step: Working at height
Hazard: Falls
Control: Wear fall protection

This is what most contractors submit. OSHA sees this every day. It's worthless.

Real (Passes Audits)

Step: Climb 200-ft transmission tower with tools
Hazard: 
  - Falls from height (200 ft)
  - Dropped tools striking crew below
  - Weather (wind >25 mph, lightning)
Controls: 
  - 100% tie-off: 2 lanyards + Y-lanyard positioning
  - Anchor points: only certified 5,000 lb rated
  - Tools tethered per manufacturer spec (30 lb max per lanyard)
  - Weather stop: winds >30 mph gust or lightning w/in 5 miles
  - Rescue plan: 6-min max via SRL descent or aerial rescue

This is what a working field pro writes. Every hazard specific. Every control measurable.

The 6-Step JHA Writing Process

Step 1: Pick The Right Job

Not every task needs a JHA. Prioritize:

Step 2: Break The Job Into Steps

Watch someone actually do the work. Write down each distinct action. Aim for 5-15 steps. Fewer = probably missing something. More = probably too granular.

Step 3: Identify Hazards At Each Step

OSHA's hazard categories:

Step 4: Assign Specific Controls Using The Hierarchy

OSHA's hierarchy of controls (in order of effectiveness):

  1. Elimination — Remove the hazard entirely
  2. Substitution — Replace with something safer
  3. Engineering — Isolate the hazard (guards, barriers)
  4. Administrative — Change how work is done (procedures, training)
  5. PPE — Last resort — protect the worker from the hazard

PPE-only controls are weakest. If your JHA answers every hazard with "wear PPE," you're not thinking hard enough.

Step 5: Have Workers Review And Sign

Every worker performing the task signs off that they've read and understand the JHA. Not just the foreman. Every worker. Every day. Every task.

Step 6: Update When Anything Changes

New equipment, new site conditions, new crew members, new hazards observed — the JHA gets updated. Old JHAs are worse than useless.

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Common JHA Mistakes

Free JHA Preview vs Full Templates

Google is full of free "generic JHA templates." They work as starting points. They fail as compliance documents.

Free templates typically give you:

What you actually need for compliance:

Frequently Asked Questions

Are JHAs legally required by OSHA?
JHAs aren't explicitly named in the CFR, but they're how you comply with OSHA's "hazard identification" requirements under 1926.20 and 1910. Most inspectors expect to see them for high-risk work. Your GC almost certainly requires them contractually.
What's the difference between a JHA, JSA, and AHA?
JHA (Job Hazard Analysis), JSA (Job Safety Analysis), and AHA (Activity Hazard Analysis) are functionally the same document with different names. AHA is federal government contract terminology (USACE EM 385). JSA is older. JHA is current OSHA preferred term. All three break jobs into steps, identify hazards, and assign controls.
How detailed does a JHA need to be?
Detailed enough that a new worker could follow it. Break the job into 5-15 steps. Each step gets 1-3 specific hazards identified. Each hazard gets 1-3 specific controls. Generic language ("be careful", "use PPE") fails audits. Specific language ("Establish minimum approach distance per Table R-3 for 500 kV = 11 feet") passes.
Who should be involved in writing a JHA?
The workers doing the job. Not just the safety manager or foreman. The people with hands on the tools know the actual hazards. A JHA written by someone who never did the work is usually wrong in important ways.
How often should JHAs be updated?
Before each new job (site-specific hazards), when the work method changes, when new equipment is introduced, after any incident or near-miss, and at least annually. Old, unmaintained JHAs are worse than none — they show OSHA you don't take safety seriously.

The T-Line Complete Pack — 11 Specialty JHAs

Live-line 500kV, helicopter longline HEC, HVDC, EPZ, substation switching — the JHAs you can't find anywhere else. Written by someone who's actually done the work.

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Article by Anthony Forbes. 20 years field experience. All templates written by Anthony directly based on real jobsite conditions.