Step 3 — Generate Ideas
After analyzing the current situation, the next question is: what could we do instead? That turns out to be a skill — one that can be blocked by habits of mind, and one that improves with the right methods.
The analysis in Step 2 shows you what the work is and where the problems are. Step 3 is about finding something better. Most people underestimate how hard this is — not because good ideas are rare, but because the mind carries its own obstacles: the habits, assumptions, and emotional reactions that block fresh thinking before it starts. This section works through those barriers first, then covers the structured methods that produce ideas for manual-work kaizen.
By the end of this section, you should understand:
- the four psychological barriers that block creative thinking, and how to recognize them,
- the six principles that characterize effective idea generation,
- the six focus areas for generating kaizen ideas in manual operations,
- the role of Motion Economy rules, Osborne's Checklist, and Brainstorming as supporting tools.
Everyone has imaginative power. Creativity in kaizen is not a trait some people have and others lack — it is a matter of adopting the right mental posture and using the right methods. The barriers in this section are not excuses; they are obstacles to remove.
1Psychological barriers to creativity
Before covering idea-generation methods, it is worth understanding what blocks them. Four categories of mental habit reliably kill ideas before they can be examined — not because the ideas are bad, but because the mind refuses to entertain them in the first place.
The cost is real on the shop floor. A leader who is in the grip of any of these barriers will not only fail to generate good ideas personally — they will also kill the ideas of team members. Being aware of the barriers is the first step to removing them.
Comfort with the current method makes any change feel unnecessary. The longer something has been done a certain way, the harder it is to imagine doing it differently.
An idea is discarded before it is examined because it contradicts something already believed — a statistic heard years ago, a rumor treated as fact, or a prejudice about what will and won't work.
Relying on common sense makes the mind inflexible. Any idea that falls outside normal observation is dismissed. The essential problem becomes impossible to see objectively.
Frustration, defensiveness, or personal investment in the current method blocks rational thinking. Good ideas die in meetings that turn into complaints or negative reactions rather than problem solving.
The four psychological barriers that block idea generation in kaizen work. All four are active mental habits, not fixed personality traits.
What to notice: these barriers are not unique to "uncreative" people — experienced leaders and engineers are just as susceptible. Habit and preconception are especially dangerous because they feel like sound judgment. Recognizing the barrier in yourself, in the moment, is the skill.
The antidote to all four is the same: adopt an open-minded attitude that accepts ideas before judging them. This is not passive — it requires deliberate effort to "get the rust out" and approach the problem fresh. Even the act of asking "why do we do it this way?" is a useful start.
Emotion is the most visible barrier in group settings. When a kaizen meeting drifts into venting or blame, idea generation stops entirely. A leader's job at that moment is to redirect — back to facts, back to the process, back to the question of what could be improved.
2The creative-mind principles
With the barriers cleared, idea generation follows six basic principles. These apply whether you are working alone or in a group, and whether the method is structured analysis or open brainstorming.
1. Separate idea generation from judgment
Trying to evaluate an idea at the same moment you think of it is like trying to get hot and cold water from the same tap at the same time. New ideas are almost always different from what is currently done — and that difference is exactly what makes them feel wrong on first contact. An idea rejected in the moment it surfaces is an idea that never gets examined. Generate first; judge later.
2. Get as many ideas as possible — quantity before quality
Good ideas rarely appear at the outset. The more ideas produced, the higher the chance that one of them is genuinely useful. Ideas also reinforce each other: one partial idea triggers another, and the combination may be the one that works. The rule is simple — first get quantity, then select for quality.
3. Think from many angles
Approaching a problem from a single viewpoint produces a narrow set of ideas. Looking from multiple angles opens new possibilities. Consider: take the bottom off a paper coffee cup and fold it. From the side it looks like a triangle. From below, a circle. Straight on, a square. It is the same object — what changes is the angle of observation. The same is true of a work problem: the person who studies it from the motion angle, the time angle, the layout angle, and the sequence angle will see things the person who looks from only one angle never will.
4. Combine ideas with others
The number of ideas generated in a group far exceeds what any individual produces. Consider the paper-clip exercise: working alone for one minute, most people come up with four or five alternative uses. Adding the ideas of everyone in the room — not duplicating, but building — the group reaches twenty or more. The principle transfers directly to manual-work improvement: bring the people who do the work, those who supply it, and those who receive it into the idea session, and the ideas compound.
5. Generate creative ideas, not just analytical ones
Analytical idea generation means studying the current method thoroughly until improvements become visible. This works, and the analysis tools in Step 2 are built for it. But analytical thinking arrives at improvements within the current frame. Creative thinking starts from the premise that there is more than one way to reach the end — and that the current method may not be the best one. Both modes are useful; creative thinking is more likely to produce the larger gains.
6. Integrate — combine ideas to make new ones
Ideas combined with other ideas become better ideas. The combination of two partial improvements can produce an improvement neither one would have achieved alone. Look for opportunities to merge, layer, or synthesize what the analysis and the group have produced.
3Methods for manual-work improvement
The six principles above are general. When the kaizen target is a manual operation — which it most often is in shop-floor kaizen — a more specific framework directs where to look. Manual operations have a distinctive set of characteristics: output pace is set by people (not machines), variation in volume and direct labor is high, schedule status is hard to read visually, walking distances are often long, and unnecessary WIP accumulates. These characteristics point directly to the six focus areas.
| # | Focus area | Representative kaizen prompt |
|---|---|---|
| 1 | Improve work motion | Watch body posture, hand movements, eye line, and foot path — are both hands working? Is there searching or groping? Can anything be done while walking? |
| 2 | Reduce variation in work-element time | Identify periodic jobs (die changes, inspection, delivery) and high-variance elements. A single element that swings from 3 to 9 seconds can bottleneck a line; stabilize it first. |
| 3 | Separate human work from machine work | Is anyone watching a machine in auto-cycle? Is someone holding a part or adjusting position while the machine runs? Free the person; automate the feed, ejection, or chute. |
| 4 | Revise standard work-in-process (SWIP) | Is the SWIP set correctly and being followed? Every unnecessary WIP point adds a series of motions. Make it so that only the correct number can be set down; mark it visually. |
| 5 | Reduce walking distance | Is the walk between work points large, non-straight, or back-and-forth? Can the layout, pallet location, or part shelf be changed to shorten it? |
| 6 | Balance work between operations | Use the standardized work combination chart to show where cycle-time variance is largest. Isolate the elements causing the spread; that is where to focus first. |
A structured checklist for directing idea generation in manual operations. Work through all six before concluding the idea set is complete.
What to notice: the six areas are not independent — reducing walking often changes SWIP, and separating human and machine work frequently reveals motion waste. Use them as a systematic scan, not a sequential list. The goal is to not miss important kaizen points.
Focus area 1 in depth — work motion
Work motion is the richest vein for manual-work kaizen. Large differences in motion efficiency appear across workers and shifts, and every second of wasted motion multiplies across every cycle. Four observation angles cover the main sources of motion waste:
- Body posture. Is the worker bending or stretching unnecessarily? Does the angle of the body change suddenly? Could any part of the task be done while walking between points?
- Hand movements. Are both hands moving and working, or is one waiting? Are hand movements too large — reaching too far, or up-and-down rather than horizontal? Is there a "hold" motion where a hand is just holding position?
- Line of eye sight. Are parts, tools, and gauges positioned where the eye naturally goes? Is there any searching or groping motion — the worker's hand moving to a location before the eye has confirmed what is there?
- Feet. Is there any footwork outside the direct flow of the work? Any long stops where the worker is standing still?
Beyond watching body motion, Therblig analysis from Step 2 can break down individual elements where waste is suspected. Once the motion picture is clear, a second set of prompts drives the idea generation:
Each of these questions can cut seconds out of the work cycle and make the job easier at the same time. Efficiency and ergonomics often move in the same direction.
Focus area 2 in depth — work-element time variation
Even when standardized work is written and followed, individual work elements can experience large time swings. A rubber boot seal that takes anywhere from 3 to 9 seconds to install is a single element — but its variance can bottleneck an entire station and slow the whole line. Veteran workers experience this variation; inexperienced workers experience more. High-variance elements get high priority.
Two types of work drive variation: periodic jobs (inspection, die changes, part delivery) and elements with intrinsic instability (tight fits, adjustments, precision work). For periodic jobs, ask whether the time can be shortened, the job broken into smaller pieces, or the work handed off to an off-line person called in by signal. For high-variance elements, ask whether the work is hard to see, requires searching, demands special knacks, or causes muri — overburden. Then ask whether the incoming part quality and shape are stable, and whether parts are delivered reliably in their specified location.
Treating high time variation as a worker skill problem rather than a method or equipment problem. The rubber-boot example is instructive: the variation was in the fit between the part and the assembly — not in the worker. Look at the method, the part quality, the tooling, and the workplace layout before concluding that training is the answer.
Focus area 3 in depth — separating human and machine work
The concept of separating human work from machine work is one of the most productive frames in TPS. When a machine is in automatic cycle, a person who stands and watches it is doing non-value-added work — but the problem is the assignment, not the person. Look for: anyone watching a machine run; anyone holding a part or adjusting position while the machine is in cycle; ejectors, chutes, or transfer devices that are not functioning and require manual intervention. Each instance is an opportunity — automate the feed, add a chute, fix the ejector, and free the person to do useful work.
Focus areas 4–6: SWIP, walking, and balance
Standard work-in-process points on manual lines are often set without careful analysis. Every unnecessary SWIP point adds a series of motions; making the correct number visible and physically constrained eliminates them. Walking waste typically comes from an equipment-first layout rather than a flow-first one — the fix is usually a layout change or a change in where parts are delivered. Work balance between operations is read directly from the standardized work combination chart: find the station with the largest variance, isolate the elements causing it, and focus the kaizen there.
4Three classical idea toolkits
Industrial engineers and industrial psychologists have assembled structured idea-generation tools over decades. Three are worth knowing by name and reach: Rules for Motion Economy, Osborne's Checklist, and Brainstorming. Each serves a different purpose, and each works best at a different point in the idea process.
| Toolkit | What it is | When to reach for it |
|---|---|---|
| Rules for Motion Economy | 22 prescriptive rules organized into three groups — rules for using different parts of the body, rules for the workplace, and rules for tool and equipment design. Originate in industrial engineering; express the most economical forms of motion. | After a motion analysis or Therblig study, when you need specific design criteria for a countermeasure — e.g., "use both hands symmetrically," "avoid abrupt direction changes," "use gravity to move parts," "put tools in designated places." Most useful as a design checklist once a motion problem has been identified. |
| Osborne's Checklist | 9 categories of forced questions — Reuse, Borrow (adapt), Change, Enlarge, Reduce, Substitute, Rearrange, Reverse, Combine — originally subdivided into 70 sub-questions. Forces thinking from angles not naturally considered. | When the team has identified the target but is stuck on what to do about it. The categories generate options that would not come up in linear thinking: "Can we reduce it? Can we reverse it? Can we combine it with something else?" Broad and general — useful for unlocking options, not for detailed motion design. |
| Brainstorming | A structured group session with four rules: no criticism, speak freely, seek quantity, think together and build on each other's ideas. Typically 15 minutes to 1 hour with 4–20 participants, a scribe, and a facilitator. A concrete, narrow theme stated 2–3 days in advance. | When the idea set is thin and group energy is needed to expand it. Works only with a concrete theme — "What could we do to reduce the number of trips the parts cart makes?" is good; "How do we prevent accidents?" is too broad and policy-adjacent. Evaluate results after the session with a separate impact vs. difficulty grid; do not mix evaluation into the session itself. |
Motion Economy, Osborne's Checklist, and Brainstorming each address a different situation. Knowing which to reach for — and when — is part of the kaizen skill set.
What to notice: these three tools are supplementary to the manual-work focus areas above, not replacements for them. The six focus areas in Figure 6.2 drive most shop-floor kaizen ideas. These toolkits expand the search when the initial scan is not producing enough options, or when a specific type of problem calls for a specific approach.
Motion Economy — body, workplace, tools
The body rules address the most common element of work: bodily motion. The most widely used rule is simultaneous symmetrical motion of both hands — doing the same thing with each hand eliminates holding and waiting, doubles throughput of simple tasks, and reduces mental fatigue because the pattern is symmetric. Related rules cover avoiding abrupt direction changes (which require force and cause fatigue), keeping motions as small as possible, and using free rather than restricted motion.
The workplace rules address the layout of parts, tools, and devices at the workstation. Put tools and materials in designated places so hand motion is the same every cycle. Move parts horizontally rather than vertically to avoid the effort of lifting. Use gravity — chutes, sloped shelves — wherever parts need to travel. Set table height so the upper arm hangs vertically and the elbow is at roughly a right angle.
The tool and equipment rules address construction and design. Avoid supporting materials by hand — use jigs. Use specific tools for specific jobs rather than universal ones for repetitive work. Combine tools used in succession. Fix tool locations. Design handles to be easy to grip.
Osborne's Checklist — nine angles
The nine categories are a forced-perspective tool: they make you ask questions you would not naturally ask. Reuse — can something currently wasted or rejected be put to a different use? Borrow — is there something similar that works differently, that you could adapt? Change — can color, shape, sound, or sequence be changed? Enlarge — bigger, longer, stronger, thicker? Reduce — smaller, separated, compressed, lighter? Substitute — a different person, material, process, or location? Rearrange — different layout, different order? Reverse — flip the direction, the role, the orientation? Combine — mix, integrate, merge units or ideas?
These questions are general enough to apply to almost any kaizen target. They are not deep — they are wide. Their value is in preventing premature closure: they push the team to consider alternatives that the initial framing ruled out without examination.
Brainstorming — rules for a productive session
Brainstorming adds two requirements beyond the four rules: a good theme and a facilitator who enforces the rules. The theme must be concrete and narrow — a "What could we do to…?" question, not a choice between options and not a policy question. Abstract or broad themes produce abstract or vague ideas. Themes that require judgment rather than creativity — "Which of A or B should we choose?" — should be removed from the brainstorming session and handled separately. Themes that belong to other departments or to management should not appear at all.
The facilitator's role is to protect the four rules, keep the energy going when ideas dry up, and make sure all participants contribute. A scribe captures every idea as stated, without filtering. After the session, the team evaluates ideas separately — typically by mapping impact against difficulty — and identifies candidates for the implementation plan.
The most common failure in brainstorming is mixing idea generation and evaluation. As soon as someone says "that won't work" or "we tried that," the room goes quiet. The no-criticism rule is not a social nicety — it is the condition that makes quantity possible, and quantity is the condition that makes quality possible.
Section summary
Generating ideas for kaizen is a learnable skill, not a talent. Four psychological barriers — habit, preconception, "common sense" blinders, and emotion — block creative thinking and kill ideas before they are examined. Removing them requires a deliberate open-minded attitude: generate first, judge later.
Six principles guide effective idea generation: separate idea generation from judgment; get as many ideas as possible before selecting; think from many angles; combine ideas with others (groups consistently outperform individuals); use creative as well as analytical thinking; and integrate ideas to create new ones.
For manual-work kaizen specifically, six focus areas direct where to look: improve work motion (body posture, hands, eye line, feet); reduce variation in work-element time (periodic jobs; high-variance elements); separate human work from machine work; revise standard work-in-process; reduce walking distance; and balance work between operations. Within work-motion improvement, a set of "what would happen if we changed…" prompts generates specific options for angle, height, quantity, sequence, and method.
Three classical toolkits supplement this framework: Rules for Motion Economy (22 rules for body use, workplace layout, and tool design — best used after a motion analysis to guide countermeasure design); Osborne's Checklist (9 forced-perspective categories — best used to unlock options when the team is stuck); and Brainstorming (a structured group session with four rules — best used to expand a thin idea set using group energy, with a concrete theme and evaluation kept separate). The ideas generated in this step feed directly into Step 4: Make the Plan.