The Jobs to Be Done Theory

People don’t buy products. They hire them to do a job

Photo by Marshall Public Library on Unsplash

1. The Milkshake Problem

McDonald’s wanted to sell more milkshakes.

They did what any reasonable company would do. They surveyed their customers. They segmented by demographics. They asked people what they wanted in a milkshake — thicker, sweeter, more flavors, bigger portions.

They improved the milkshake based on the feedback.

Sales didn’t move.

Then Clayton Christensen’s team tried something different. Instead of asking about the milkshake, they asked about the morning.

They stood in the parking lot and watched. Who was buying milkshakes, and when, and what were they doing before and after?

What they found changed everything.

Most milkshakes were sold in the morning. To commuters. Alone. Driving to work.

These people weren’t buying a milkshake because they wanted a treat. They were buying it because they had a long, boring drive ahead of them, they needed one hand free for the wheel, they’d be hungry again by ten if they didn’t eat something, and the milkshake — thick, slow to consume, fits in the cupholder — did the job better than a banana or a granola bar.

The milkshake wasn’t competing with other milkshakes.

It was competing with boredom, hunger, and the morning commute.

2. The Core Idea

Clayton Christensen formalized this into what became one of the most useful frameworks in modern business thinking.

Jobs to Be Done.

The idea is simple on the surface:

Customers don’t buy products or services. They hire them to make progress in a specific circumstance.

The “job” is not a feature. It’s not a demographic. It’s not a use case.

It’s the progress the customer is trying to make — functional, emotional, social — in a specific moment, with specific constraints.

When you understand the job, you understand what you’re actually competing against. And that changes everything about how you build, position, and improve what you offer.

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3. Functional. Emotional. Social.

Every job has three dimensions.

Functional — the practical task. Get me from A to B. Keep me fed until lunch. Help me finish this report.

Emotional — how the customer wants to feel, or not feel. Confident. Calm. In control. Not embarrassed. Not anxious.

Social — how the customer wants to be perceived by others. Competent. Sophisticated. Responsible. Like someone who makes good decisions.

Most companies only think about the functional dimension.

But the emotional and social dimensions are often where the real job lives.

Nobody buys a luxury watch because they need to know what time it is. The functional job is trivial. The social and emotional jobs — status, taste, permanence, the feeling of having arrived — that’s what’s actually being hired.

When you miss the emotional and social dimensions, you build the right product for the wrong job.

4. The Competitor You’re Not Watching

Here’s where JTBD gets genuinely dangerous for incumbents.

When you define your competition by category — milkshakes competing with milkshakes, airlines competing with airlines, software competing with software — you miss the real competitive landscape.

You’re not competing with products in your category.

You’re competing with every other way the customer could get the job done.

Zoom didn’t just compete with other video conferencing tools. It competed with business travel. With phone calls. With the assumption that you had to be in the same room to have a real meeting.

Audible doesn’t compete with other audiobook platforms. It competes with silence, with podcasts, with music — for the job of making a commute feel less wasted.

Slack didn’t just compete with email clients. It competed with the entire way teams had learned to coordinate — meetings, hallway conversations, CC chains.

When you see the real competition, you see the real opportunity.

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5. Why Demographics Fail You

Traditional market research segments by who the customer is.

Age. Income. Gender. Geography. Persona.

JTBD says this is the wrong unit of analysis.

The same person hires different products for different jobs at different moments. A 38-year-old marketing director buys a granola bar at 7am for a completely different job than the one she’s hiring when she buys a granola bar at 3pm.

Same person. Same product. Different job.

And a completely different 38-year-old — different income, different city, different lifestyle — might hire the exact same product for the exact same job in the exact same moment.

Demographics tell you who the customer is.

Jobs tell you why they reached for something, right now, in this specific situation.

One of these is useful for targeting ads.

The other is useful for building something people actually need.

6. The Switch and the Struggle

Christensen’s team also mapped what happens right before a customer hires a new product.

There’s always a struggle. A moment where the old solution — or no solution — stops being good enough.

And there’s always a switch. The customer fires the old solution and hires the new one.

Understanding the switch is as important as understanding the job.

Because the switch reveals what the customer was tolerating. What friction they lived with until they couldn’t anymore. What the old solution was failing to do.

That gap — between what the customer was tolerating and what they actually needed — is where new products find their footing.

It’s also where incumbents get disrupted. Not because a better product appeared. Because customers finally found something that did the job they’d always needed done.

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7. Where This Fits in the Series

• Marketing Myopia → Define your business correctly
• JTBD → Understand what customers actually need — and what job they’re really hiring you to do.
• Blue Ocean → Design markets where you don’t have to compete
• Innovator’s Dilemma → Recognize disruption before it recognizes you
• Crossing the Chasm → Sequence your go-to-market correctly
• OKR → Connect strategy to execution
• The Learning Organization → Extract something from what you’ve executed
• The Lean Startup → Build execution around learning
• The Flywheel Effect → Let consistent, compounding effort do what dramatic moments never can

JTBD sits near the beginning of the series for a reason.

Before you design a market, before you cross a chasm, before you build a flywheel — you need to know what job you’re being hired to do.

Everything else builds on that.

8. One Question for This Week

Think about your product, your service, or your team’s output.

Then ask:

“What job is the customer actually hiring this to do — and what were they tolerating before they found us?”

Not what you built it for.

What they hired it for.

The gap between those two answers is where your next real insight lives.