Jobs to be Done: what is your product really hired for?
The milkshake study as Christensen actually told it, why every job has functional, emotional, and social layers — and why your fiercest competitor may be a banana, a spreadsheet, or nothing at all.
The theory in one paragraph
Christensen's claim is that segmenting markets by customer attributes — age, income, company size — explains who might buy but never why anyone does. People buy when a job arises in their life: a struggle for progress in a specific circumstance. They 'hire' a product to do that job and 'fire' whatever did it before. The unit of analysis shifts from the customer to the circumstance — the same person hires a completely different solution at 7am on the highway than at 5pm with a child in tow — which is why demographic personas keep producing products that test well and sell badly.
How it works
The mechanics — as Clayton Christensen defined them, not the folklore version.
The milkshake study
A fast-food chain had optimized milkshakes against customer feedback — thicker, chunkier, cheaper — and sales hadn't moved. Christensen's team instead watched who bought and when: nearly half sold before 8am, to solo commuters, to go. The job was 'keep me occupied and full through a long, boring drive' — and the milkshake's competitors were bananas (gone in a minute), bagels (crumbs and steering wheels), and boredom itself. Same product, second job at 5pm: parents hiring a small treat to feel like a good parent. Two jobs, two different products to build, zero of it visible in demographics.
Every job has three dimensions
Functional: the practical task — get downtown, file the invoice, stay full until lunch. Emotional: how the customer wants to feel — in control, unembarrassed, like a good parent. Social: how they want to be perceived — competent to the boss, generous to the kids. Products that win on function and lose on emotion get churned; luxury goods and enterprise software alike are frequently hired for the emotional and social layers while everyone politely discusses the functional one.
Hire, fire, and the non-consumption baseline
Every hire implies a firing — of a rival product, a homemade workaround, or the decision to endure the problem. That last one, non-consumption, is usually the biggest segment and the one incumbents can't see because it appears in nobody's market-share report. Christensen's disruption research and JTBD meet exactly here: the safest entry point for a startup is the job people have given up on, where the bar is 'better than nothing' and there's no incumbent to outspend.
Your competitive set is defined by the job, not the category
The milkshake didn't compete with other milkshakes — it competed with bananas, bagels, Snickers bars, and a boring commute. This is the framework's sharpest edge for founders: category thinking makes you benchmark features against the obvious rival while customers quietly hire a spreadsheet, a WhatsApp group, or nothing. Ask what people would actually do if your product vanished tomorrow; that answer — not the competitor slide in your deck — is who you're really up against.
The person behind it
Clayton Christensen
Harvard Business School professor · father of disruption theory
Christensen was already the most influential management thinker of his generation — The Innovator's Dilemma explained why great companies get killed from below — when he adopted the jobs lens to answer the question disruption theory couldn't: what should you build? He put jobs into print in The Innovator's Solution and spent the next decade retelling one milkshake study until the idea stuck.
How to apply it this week
Each step maps to a field in the Problem Statement Canvas tool — finishing the read means finishing the work.
Interview switchers, not fans
Find people who recently started or stopped using a solution in your space and reconstruct the timeline: what happened, what they tried, what finally pushed them. The job reveals itself in the struggle before the switch — not in what current users say they like.
Write the job statement — circumstance first
Format: when [circumstance], I want to [progress], so I can [outcome]. 'When I land a new client, I want to look established, so I can charge properly' is a job; 'freelancers aged 25–34' is a demographic wearing a job's clothes.
Problem Statement Canvas · problem statementLayer in the emotional and social dimensions
For each functional job, ask what the customer is afraid of and who is watching. If your interviews surface phrases like 'I don't want to look cheap' or 'my co-founder thinks we've outgrown this', write them down verbatim — that's the layer your landing page should speak to.
Problem Statement Canvas · who has this problem + why it mattersList everything that would get fired
Current tools, manual workarounds, a cousin who helps, and 'we just live with it'. Rank them by how entrenched they are. If the strongest incumbent is 'nothing', you're competing against non-consumption — your enemy is inertia, and your pitch must make starting feel trivially easy.
Problem Statement Canvas · existing alternativesSize the job, not the category
Count the people struggling with the job — including the non-consumers no analyst report tracks — rather than quoting a category TAM. A 'small' category wrapped around a widespread, badly-served job is exactly the shape most breakout startups had at day one.
Feeds your Readiness Score · Foundation
Build it, don't just read it
The steps above are the Problem Statement Canvas tool's structure. Open it and work through them with your own startup — your readiness score starts building from the first field.
Free account · no card required
See it in the wild
Teardowns from our benchmarks library where this framework is doing real work.
Benchmark teardown
McDonald's
The origin story itself — one milkshake, two jobs, and a competitive set made of bananas and boredom
Read the teardown
Benchmark teardown
IKEA
Christensen's example of a whole company organized around one job: 'help me furnish this place today'
Read the teardown
Benchmark teardown
Netflix
Job-defined competition taken to its logical end — Hastings names sleep, not HBO, as the rival
Read the teardown
Frequently asked questions
What is the Jobs to be Done framework in simple terms?
It's the idea that customers don't buy products because of who they are, but because a 'job' arises in their life — a struggle to make progress in a specific circumstance — and they hire a product to do it, firing whatever did it before. Understanding that job, including its emotional and social sides, tells you what to build and who you actually compete with.
What is the McDonald's milkshake story about?
A fast-food chain kept improving milkshakes based on customer feedback and sales never moved. Christensen's team observed buyers instead and found nearly half of milkshakes sold before 8am to solo commuters, hired to make a long drive bearable and hold off hunger — competing with bananas, bagels, and boredom, not other shakes. The lesson: watch what a product is hired for; don't survey people about attributes.
What are functional, emotional, and social jobs to be done?
Every job has three dimensions: the functional dimension is the practical task (get to work, send an invoice), the emotional dimension is how the customer wants to feel (in control, safe, proud), and the social dimension is how they want to be seen by others (competent, generous, successful). Products often win or lose on the emotional and social layers even when the functional comparison looks even.
What does competing against non-consumption mean?
It means your biggest rival is often not another product but the customer's decision to do nothing — endure the problem, use a manual workaround, or go without. Non-consumers don't show up in market-share data, which is why incumbents ignore them, and why Christensen argued they're the safest entry point for new companies: the bar is 'better than nothing', not 'better than the market leader'.
How do you write a jobs to be done statement?
Use the format: when [circumstance], I want to [make some progress], so I can [desired outcome] — for example, 'When I close my store at midnight, I want tomorrow's inventory ordered automatically, so I can go home instead of doing paperwork.' Anchor it in a circumstance rather than a persona, keep the solution out of it, and check that it has functional, emotional, and social layers.
Related frameworks
Value Proposition Canvas
Alexander Osterwalder & Yves Pigneur · 2014
Customer Development
Steve Blank · 2005
Lean Canvas
Ash Maurya · 2010
Sources
Independent educational summary written by StartupKit from public sources. Jobs to be Done is the work of Clayton Christensen; this page is not affiliated with or endorsed by the author.