Quick Answer: FLHA vs JHA

An FLHA (Field Level Hazard Assessment) is a quick, worker-led hazard check done at the worksite immediately before starting a task or when conditions change. A JHA (Job Hazard Analysis), sometimes called a JSA (Job Safety Analysis), is a formal, written document prepared in advance that systematically breaks a job into steps and identifies hazards and controls for each step.

Think of the JHA as the blueprint and the FLHA as the daily site walk. Both are essential, but they’re not interchangeable.

What is an FLHA?

A Field Level Hazard Assessment (FLHA) — also called a Field Level Risk Assessment (FLRA) in some jurisdictions — is a pre-task safety document completed by workers on-site before beginning any work activity. It is sometimes referred to as a “tailgate meeting form” or “pre-task plan.”

The purpose of the FLHA is simple: before touching a single tool, every worker stops to look at the specific conditions of the work area right now and identifies hazards that could cause injury. Conditions on a construction site change constantly — weather, ground conditions, nearby trades, new equipment — and a JHA written weeks or months ago can’t account for these changes.

In most Canadian provinces, FLHAs are a legal requirement under Occupational Health and Safety legislation. In Alberta, for example, Section 9 of the OHS Code requires workers to conduct a hazard assessment before work begins at a work site. In the United States, while OSHA does not mandate an “FLHA” by that exact name, the OSHA General Duty Clause and many state-plan states effectively require the same pre-task hazard identification process. Many large contractors and project owners mandate it by name in their safety programs.

What does FLHA stand for?

FLHA stands for Field Level Hazard Assessment. The “field level” refers to the fact that it is conducted by front-line workers at the physical location where work will take place, as opposed to an office-based risk assessment.

Other names for an FLHA

Depending on your province, state, company, or industry, you may hear the same document referred to as:

• Field Level Risk Assessment (FLRA)
• Pre-Task Plan (PTP)
• Take 5
• Tailgate Safety Meeting form
• Daily Hazard Assessment (DHA)
• Last Minute Risk Assessment (LMRA)

What is a JHA?

A Job Hazard Analysis (JHA) is a systematic process of identifying, analyzing, and recording the hazards associated with each step of a specific job task. It is also widely known as a Job Safety Analysis (JSA); the two terms are often used interchangeably in the construction industry.

The JHA is typically developed by a supervisor, safety professional, or an experienced worker before a project or task begins. It involves breaking the entire job into a sequence of basic steps, identifying the potential hazards at each step, and defining the preventive measures or controls that should be applied.

What does JHA stand for?

JHA stands for Job Hazard Analysis. It is sometimes called a JSA (Job Safety Analysis). Both refer to the same type of pre-planned, written safety document.

A JHA is not a reactive document, it’s a planning tool. It should be created in advance and used to train workers, inform toolbox talks, and serve as a reference document throughout the life of a project.

Key Differences: FLHA vs JHA

The table below breaks down the most important differences between an FLHA and a JHA side-by-side so you can quickly understand what sets them apart and how they complement each other.

When to Use an FLHA vs a JHA

Use an FLHA when:

• You are starting work at the beginning of a shift
• You are starting a new task that differs from what you were previously doing
• Site conditions have changed (weather, ground conditions, new hazards introduced)
• A new worker joins the crew and needs to be briefed on current hazards
• There has been an incident or near-miss on or near the work area
• Work resumes after a significant break (e.g., after lunch in a changed environment)

Use a JHA when:

• You are planning a new type of job, task, or project
• Preparing safety documentation for a client or general contractor submission
• Conducting a toolbox talk or safety orientation for a crew
• Investigating a recurring incident or near-miss to improve controls
• Onboarding new employees who need to learn the hazards of a specific job
• Regulatory compliance requires documented hazard analysis for specific high-risk work

How to Complete an FLHA: Step by Step

Completing an FLHA is a structured but fast process. Here is the standard approach used on most construction sites in Canada:

1. Identify the task. Clearly write down what work is being done. Be specific: “installing rebar on Level 3 slab” is better than “rebar work.”
2. Walk the work area. Physically walk the space where the work will be performed. Don’t do this from memory; conditions change daily on a construction site.
3. Identify all hazards. Look for physical hazards (uneven ground, overhead work, sharp edges), energy hazards (electrical, pressure, stored energy), environmental hazards (weather, dust, noise), and human factors (fatigue, distraction, new workers).
4. Assess the risk. For each hazard, consider: what is the likelihood it causes harm, and how severe would that harm be? This helps prioritize your controls.
5. Determine controls. Apply controls using the hierarchy of controls: Eliminate → Substitute → Engineering → Administrative → PPE. Document what specific controls will be in place.
6. Communicate with all workers. Every worker involved in the task must be part of the FLHA discussion. This is a safety conversation.
7. Sign the form. All workers and the supervisor sign the FLHA to confirm they have been informed of the hazards and controls. Keep records on file.
8. Reassess if conditions change. If something changes — a new piece of equipment shows up, weather shifts, a nearby crew starts working overhead — stop and reassess before continuing.

How to Complete a JHA: Step by Step

A thorough JHA takes time to complete properly, but the investment pays off in reduced incidents and strong regulatory compliance. Here is the process:

1. Select the job to analyze. Prioritize jobs with a history of incidents, high-severity potential, jobs performed by new workers, or any non-routine high-risk tasks.
2. Involve experienced workers. The people doing the job know the hazards best. Include them in the JHA development process (it also increases buy-in when they later use the document).
3. Break the job into sequential steps. List each step in order. Each step should be a distinct action: not so broad that hazards are missed, not so narrow that the list becomes unmanageable. Aim for 5–15 steps per job.
4. Identify hazards for each step. For every step, ask: What could go wrong here? Consider injury types (struck-by, caught-in, fall, overexertion, exposure) for each task step.
5. Determine preventive measures. For each hazard, document the controls that will reduce or eliminate the risk. Use the hierarchy of controls as your framework.
6. Review, approve, and document. Have the JHA reviewed by a safety officer or supervisor. Obtain sign-off and maintain the document in your safety management system.
7. Communicate it to workers. Present the JHA at a toolbox talk before work begins. Ensure all workers understand the hazards and their controls, and have them sign off that they’ve reviewed it.
8. Review and update regularly. A JHA is a living document. Update it when the scope of work changes, after an incident, or when new equipment or methods are introduced.

If you’re looking for even more guidance, The Canadian Centre for Occupational Health and Safety (CCOHS) publishes a helpful step-by-step JHA guide.

Legal Requirements in Canada and the United States

Both FLHAs and JHAs (or their equivalents) are addressed in workplace safety legislation across North America, though the specific requirements vary significantly by jurisdiction. Here is an overview of the regulatory landscape in both countries.

United States — OSHA

In the United States, the Occupational Safety and Health Administration (OSHA) governs workplace safety at the federal level. OSHA does not prescribe a specific “FLHA” form, but several overlapping requirements create the same practical obligation:

• General Duty Clause (Section 5(a)(1)): Requires employers to provide a workplace free from recognized hazards that are causing or likely to cause death or serious physical harm. Pre-task hazard identification directly supports this obligation.
• 29 CFR 1926 (Construction Standards): OSHA’s construction safety standards require hazard assessments for specific high-risk activities including fall protection, personal protective equipment (PPE), excavations, scaffolding, and confined space entry.
• 29 CFR 1910.132 (PPE): Requires a written hazard assessment to determine appropriate PPE — a process nearly identical to a JHA.
• State-Plan States: Twenty-two states operate their own OSHA-approved safety programs (Cal/OSHA, Washington L&I, Michigan MIOSHA, etc.) and may have more prescriptive requirements than federal OSHA, including mandatory pre-task planning documentation.

Beyond regulatory minimums, most large US general contractors (particularly those working in the oil & gas, industrial, and heavy civil sectors) mandate FLHAs and JHAs in their contractor safety management programs as a condition of site access.

Canada — Provincial OHS Legislation

In Canada, workplace safety is provincially regulated. Most provinces require formal hazard assessment processes that align directly with the FLHA and JHA framework.

Alberta

Under the Alberta Occupational Health and Safety Code, Section 7 requires employers to identify existing and potential hazards and assess the risk. Section 9 specifically requires a hazard assessment before workers begin a work activity at a work site. Workers must be told of the results of any hazard assessment. The FLHA is the primary tool used to meet this on-site, real-time obligation.

British Columbia

WorkSafeBC’s OHS Regulation Part 3 requires employers to identify and assess workplace hazards. A written safe work procedure (which aligns closely with a JHA) is required for work involving a significant risk of injury. Workers must be familiar with applicable safe work procedures before performing a task.

Saskatchewan

The Saskatchewan Employment Act and OHS Regulations require employers to identify, assess, and control hazards. A written hazard assessment is required for any work with a significant hazard potential.

FLHA and JHA as due diligence evidence

In both countries, these documents serve as critical evidence of due diligence in the event of a workplace incident. In the US, OSHA citations and civil liability exposure increase significantly when employers cannot demonstrate pre-task hazard assessment. In Canada, the consequences can include fines, stop-work orders, and in serious cases, criminal charges under Bill C-45 (the Westray Amendment to the Criminal Code of Canada). In both jurisdictions, a paper trail showing genuine hazard assessment is your strongest legal defence.

Common Mistakes to Avoid

FLHA mistakes

• Treating it as a checkbox exercise. The most dangerous FLHA is the one that gets filled out in the truck before workers even get out. Walk the work area. Every time.
• Not reassessing when conditions change. An FLHA done at 7 AM doesn’t cover a rainstorm at 10 AM. Reassess.
• Foreman fills it out alone. Workers must be part of the discussion. Their signatures mean they were genuinely briefed, not just handed a clipboard.
• Vague hazard descriptions. “Slip/trip hazard” is too generic. Be specific: “uneven ground at the NW corner of the slab near the crane base.”

JHA mistakes

• Creating it after the work starts. A JHA is a planning document. If it’s written after the job is already underway, it loses most of its value.
• Not involving workers in development. Safety officers writing JHAs in isolation often miss field-level hazards that experienced workers would immediately identify.
• Never updating it. A JHA written three years ago for a different project is not adequate for today’s work. Review and revise.
• Using it as a replacement for the FLHA. These are not interchangeable. Both are required. Using only a JHA and skipping the daily FLHA is a regulatory violation in most jurisdictions.

Frequently Asked Questions