The Job Breakdown Sheet

Before a supervisor can teach a job well, they have to take it apart and see it clearly — and that is what the breakdown does. A Job Breakdown Sheet is the supervisor's analysis of a job, written down in three columns: the Important Steps of the operation, the Key Points within each step, and the Reasons those key points matter. It is a note from the instructor to themselves, made before instruction begins.

By the end of this section, you should understand:

• why a job must be broken down before it can be taught well,
• what goes in each of the three columns,
• how to recognize a key point,
• how to make a breakdown by watching the actual job,
• what a finished breakdown looks like, using the Fire Underwriter's Knot as a worked example,
• and the limits of the tool — what the breakdown sheet is not.

1Why you break a job down first

The biggest lesson from watching someone teach a job for the first time is almost always the same: we have to think the job through carefully before we can teach it properly. We believe we know the job — and we do, in our hands. But when it comes time to put it into words for someone who does not, we skip the very points that matter most.

This is why the four steps alone are not enough. A supervisor can know the Prepare-Present-Try-out-Follow-up sequence by heart and still teach badly, because the real work of instruction happens before the worker ever arrives. The breakdown is where a supervisor:

• gets the necessary information clear in their own mind,
• fixes the order so the explanation does not jump around,
• decides what to present first so the worker is not given too much at once,
• and makes the critical points obvious instead of letting them hide inside familiar motions.

When that preparation is skipped, the cost shows up downstream as scrap, rework, delays, accidents, and frustrated people — the same problems listed in Section 1. Poor instruction is rarely a sign of a slow worker. More often it is a sign of a job that was never properly analyzed.

2The three columns

A breakdown has three columns. Each answers a different question about the job.

An important step moves the job forward. It is a "value-adding" action, not a small motion. Reaching for a screwdriver or picking up a pin is not a step worth writing down; it is only a motion inside a larger action. Inserting the pin into the designated hole is the step, because that is what advances the job. The test for a step is simple: does this segment carry the work forward, and can it be demonstrated?

A key point is anything in a step that can make or break the job — the small number of things that determine whether it succeeds. Most of any new job is easy, because it is just a new arrangement of actions the worker already knows. Only some 5 to 10 percent is genuinely tricky. The key points are that 5 to 10 percent. As the name says, a key point is the key to doing a step properly: the knack that makes the work go right, anything that affects safety, and anything that makes the work easier to do.

The reason explains why a key point is a key point. It is what the supervisor will say on the third time through Present (Section 3), and it is what turns a rule the worker merely obeys into one the worker understands and will keep. "Pull the ends even" is a key point; "so the loops carry even tension" is the reason.

A useful way to hold the three columns in mind:

FormJob Breakdown Sheet

Operation:

Parts:

Tools & Materials:

Safety Equipment:

Important Steps	Key Points	Reasons

3How to recognize a key point

Finding the key points quickly and accurately is the hardest and most important part of the breakdown. Before sorting them into kinds, hold on to the one test that matters most:

That is the first and most important consideration. If something in a step could ruin the result, hurt someone, or quietly make or wreck the work, it is a key point — whatever you choose to call it. With that test in hand, the practical move is to look at each step and ask whether anything in it is a key point of one of three kinds: a knack, a safety point, or an ease point.

1. Knack — the feel, timing, or special "trick of the trade" that makes the work go right

This is the category that hides most easily, because it lives in the experienced person's hands and is rarely spoken aloud. It includes "feel," "knack," timing, the location of heat, knowledge of a risk, a special motion, special information, or the ability to tell a normal sound from an unusual one. These are the points an experienced person does without thinking — and therefore the points most likely to be skipped in teaching.

2. Safety — things that prevent injury

Anything that could injure the worker or others if done wrong: a guard, a grip, a body position, a hazard to keep clear of. Safety key points protect the person, not just the product.

3. Ease — things that make the work easier

Anything that makes the work easier, faster, or less tiring to do: a better grip, a smoother sequence, a position that saves effort. These points keep the job from being harder than it needs to be.

You do not have to list every precaution or everything that could conceivably go wrong. As with steps, the breakdown is meant to be thorough and concise. Capture the points that genuinely make or break the step, and stop.

4How to make a breakdown

A breakdown is made by watching the actual job being done — not from memory, and not from the engineering specification.

The order of work is straightforward:

1. Run through the job. Actually do it, or watch it done, at the worksite.
2. List the important steps. For each segment, ask: Does this advance the job? Is it a step worth demonstrating? If yes, write it down — briefly. Keep going until every major step is on the sheet.
3. List the key points for each step. Return to the first step and ask the three questions — risk, ease, quality. For anything that qualifies, ask once more: Is it really a key point? Write the ones that survive. Then move to the next step.
4. Note the reason for each key point. A short phrase is enough — why this point matters.

Keep the wording short. The sheet is a reminder to yourself, not a manual, and too much detail buries the essentials. Make a breakdown for everything you have to teach, and file the sheets so you can refresh your memory the next time the job comes up.

5A worked example — the Fire Underwriter's Knot

The Fire Underwriter's Knot from Section 2 is a good first breakdown because the point is not the knot. As you read the breakdown below, do not try to learn the knot. Watch the analysis instead — how a thirteen-motion procedure collapses into five important steps and a handful of key points.

The heading block names the job:

And here is the breakdown itself:

Important Steps	Key Points	Reasons
1. Untwist and straighten	6 inches	Quality standard
2. Make right-hand loop	In front of main strand	To make the correct tie
3. Make left-hand loop	Pull toward you	Easier to move to the next motion
	Under the stub	To make the correct tie
	Behind the main strand	To make the correct tie
4. Put end through loop
5. Pull taut	Ends even	Even tension in the loops
	Knot snug	Correct positioning of the knot

Compare that with the full procedure. Written out motion by motion, tying the knot takes thirteen separate steps and about 175 words — pick up the cord, hold it six inches from the end, unravel the wires into a "V," and so on. The breakdown captures the same job in five important steps and roughly forty words.

When the supervisor actually teaches the knot, they will of course describe all thirteen motions, in 175 words or more. But to keep the whole job organized in their own head while teaching, they need only the five important steps and their key points. That is the work the breakdown does: it gives the instructor a complete, compact list of everything that must be covered.

6Applying the breakdown to a real job

The knot is practice. The point is to do the same thing with the jobs in your own area.

Take a real job and work through it exactly as above. Do the job, or have the worker do it, and stop after the first segment. Ask: Has the job been advanced? Is this an important step? If so, write it down in the worker's own words, helped along where the wording is rough. Continue until every important step is listed.

Then go back to the first step and find the key points by asking the three questions. If a key point is hiding — if the worker does something right without naming it — draw it out with prompts:

• "Does it make any difference if…?"
• "What would happen if…?"
• "Why did you do it that way?"

Those questions are how you pull the unspoken knacks out of an experienced person's hands and onto the sheet. They are the same kind of open what / why / how questions introduced in Section 2 — questions that cannot be answered "yes" or "no," and so reveal what the person actually knows.

When the breakdown is done, the rest of instruction gets easier. At Present, you can lay out the job one clear step at a time and stress every key point. At Try out, you already have the exact list of items the worker must feed back to you — so you know immediately if they have missed one of the essentials.

7What the breakdown sheet is not

The breakdown sheet is a preparation tool for the instructor. It is not a worker instruction sheet, and it is not a substitute for the four-step instruction itself.

A few consequences follow from that:

• It is brief by design. It holds the essentials, not a full time-and-motion study. Too much detail defeats the purpose.
• It is for the instructor's use only. Handing the worker the breakdown sheet is not training. The teaching still happens through the four steps.
• Worker-facing documents come later. Once a job has been taught, you can create instruction sheets, job aids, or operating procedures for the worker. Those are different documents with a different audience.