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Thorsten Meyer AI’s first “Work After Work” episode uses the three-sector model to trace how employment shifted from farming to manufacturing and services. Historical figures in the source show the scale of that change; the episode’s suggestion that automation could become a sector of its own is a thesis, not an established forecast.
The episode defines the primary sector as work that takes resources from nature, such as farming, fishing and forestry; the secondary sector as manufacturing, construction and energy; and the tertiary sector as services including trade, transport, health, education and government. It uses a loaf of bread to illustrate how all three can contribute to one product, from growing wheat to baking it and selling it.
The source cites estimates showing a long decline in agriculture’s share of employment. Historian Stanley Lebergott’s estimates put farming at 73.7% of the US labor force in 1800, 40.2% in 1900 and 12.0% in 1950. The International Labour Organization’s modelled estimate puts the US figure at 1.5% in 2025. These figures describe employment shares, not the number of workers or the amount of food produced.
The episode also reports that the ILO’s modelled estimates show services employed more people worldwide than farming from 2001 onward. For China, it cites a fall in primary-sector employment from 83.5% in 1952 to 22.2% in 2024; Japan’s census figures show a decline from 53.8% in 1920 to 3.2% in 2020. The measures and sources differ across these examples, so they illustrate national changes rather than a single directly comparable dataset.
Work After Work · Episode 01 · November 2, 2026
AI at Work: Exploring Field, Factory, and Office Jobs
A three-sector map of how employment moved from farms to factories and services—and a new question about what machines may change next.
TL;DR History shows a broad shift in where people work. A future automation sector is the episode’s thesis, not an established forecast.
Daily installments on economies, jobs, and automation.
ILO modelled estimates show services passed farming in worldwide employment.
No timeframe or supporting forecast method is supplied for the automation thesis.
Three sectors, one loaf
The model groups work by what it does. A single everyday product can pass through all three parts of an economy.
Field
Work that grows or takes resources from nature.
Factory
Work that makes, builds, or transforms materials.
Office & services
Work that provides services to people and organizations.
Work moved away from farming
Historical employment shares show a long decline in agriculture’s portion of the workforce. Shares describe where workers are counted—not worker totals or food production.
United States · farming share
1800–1950: estimates by historian Stanley Lebergott. 2025: ILO modelled estimate.
A changing mix of work
The episode reports that services employed more people worldwide than farming from 2001 onward, according to ILO modelled estimates.
China’s primary-sector employment share fell from 83.5% in 1952 to 22.2% in 2024. Japan’s census series fell from 53.8% in 1920 to 3.2% in 2020.
China Primary employment
Source figures cited by the episode; classification and method may differ from other examples.
Japan Primary employment
Census figures cited by the episode; read as a national trend, not a cross-country comparison.
Fewer factory jobs, more output
The episode challenges the idea that the United States no longer makes things by putting employment and output side by side.
Two measures can move differently
Factory employment is reported at about 35% below its June 1979 peak, while inflation-adjusted manufacturing output in 2025 was about 1.9 times its 1979 level.
A useful map with blurred edges
The framework has a history, but real jobs do not always fit neatly inside one category.
Allan G. B. Fisher
The New Zealand economist is credited in the source with adding “tertiary” to the primary and secondary categories. His book The Clash of Progress and Security was written in 1934 and published in 1935.
Colin Clark
In The Conditions of Economic Progress, Clark compared employment patterns across countries and described movement from agriculture to manufacturing and then services.
Jean Fourastié
Fourastié argued that services could absorb workers displaced as industry became more productive—an historical argument, not a guarantee about future automation.
“The model is a broad map of employment—not a precise account of every job.”
Classification can vary: software work inside a car maker or mining activity may be counted differently across statistical systems.Automation: thesis, not forecast
The series asks which tasks may remain human as machines take on more. The supplied material does not establish a future job count or timeline.
What the episode does—and does not—show
It does not establish how many jobs automation will displace, which occupations could be affected first, or how quickly changes might happen.
The idea that automation could become its own sector is presented as the author’s personal thesis. The source gives no timeframe or method supporting a forecast that it might perform up to 90% of work.
Historical employment shares also depend on definitions and statistical methods, so the examples need to be read with their sources in view.
Machines could eventually perform much of the work in a distinct sector, the episode proposes.
Not a measured forecast · No timeframe supplied · Outcome remains unproven
Thorsten Meyer AI says it plans 60 daily episodes. Episode 1 introduces the sector framework; the source says episode 48 will examine the automation thesis. No further dates or detailed schedule were supplied.
Key questions
What the first episode says—and where the evidence stops.
What is “Work After Work”?
A planned 60-part daily series from Thorsten Meyer AI about economies, employment shifts, and how machines may change work. Episode 1 was published November 2, 2026.
What are the three sectors?
Primary work grows or extracts resources; secondary work makes or builds things; tertiary work provides services such as trade, transport, health care, and education.
When did services pass farming worldwide?
The episode says ILO modelled estimates place the crossover in 2001. The supplied material does not include the underlying table or further methodological detail.
Does the episode prove automation will be a new sector?
No. It presents this as the author’s thesis. The source does not establish that outcome or say when it might happen.
How Jobs Shifted Across Sectors
The sector framework gives readers a way to understand where people work as economies change. The historical examples show a broad movement away from farming and, later, toward services. That shift matters to workers and policymakers because changes in sector employment affect the kinds of jobs available and the skills employers need.
The episode also challenges the claim that the United States no longer makes things. It says US factory employment is about 35% below its June 1979 peak, while inflation-adjusted manufacturing output in 2025 was about 1.9 times its 1979 level. The figures suggest that employment and output can move differently as production changes; they do not establish why either measure changed.
Automation is the series’ forward-looking question. The episode proposes that machines could eventually perform most work in a distinct sector, but offers that as a personal thesis. It is not presented as a measured forecast, and the source does not set out evidence establishing that outcome.
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The Three-Sector Model’s Origins
The three-sector model emerged from early 20th-century economic writing and statistics. The source credits New Zealand economist Allan G. B. Fisher with adding “tertiary” to the primary and secondary categories. Fisher wrote his book The Clash of Progress and Security in 1934; it was published in 1935. Colin Clark later described the terms as already used in Australian and New Zealand statistics.
In The Conditions of Economic Progress (1940), Clark compared employment patterns across countries and described movement from agriculture to manufacturing and then to services. French economist Jean Fourastié, writing in 1949, argued that services could absorb workers displaced as industry became more productive. These are historical arguments about economic change, not guarantees about how future automation will affect jobs.
The categories are useful but imperfect. A software engineer working for a car manufacturer, for example, may be counted differently depending on the statistical system. Mining also falls into different categories in some classifications. The source presents the model as a broad map of employment, not a precise account of every job.
What Automation May Change
The episode does not establish how many jobs automation will displace, which occupations could be affected first, or how quickly any changes might occur. Its suggestion that automation could become a sector performing up to 90% of work is explicitly identified as the author’s thesis, and the source provides no timeframe or supporting forecast method for that figure.
Historical employment shares also depend on definitions and statistical methods. The cited figures span different countries, periods and sources, and the source does not provide a common methodology for comparing every series. The exact classification of some jobs, including software work within manufacturing firms, remains dependent on the statistics used.
The Series Turns to Automation
The publisher says the series will release 60 daily episodes examining how the economy is built, how work has moved between sectors and which tasks may remain human as machines take on more. Episode 1 introduces the framework; according to the source, episode 48 will examine the automation thesis. The publisher has not provided further episode dates or a detailed schedule in the supplied material.
The next useful evidence will come from the series’ later episodes and from measured data on employment, output and task automation. Until then, the proposed new sector remains a question for the series to test, not a settled description of the labor market.
Key Questions
What is the “Work After Work” series?
It is a 60-part daily series from Thorsten Meyer AI about how economies are built, how employment shifts and how machines may change work. The first episode was published November 2, 2026.
What are the three sectors?
The primary sector extracts or grows resources from nature; the secondary sector makes or builds things; and the tertiary sector provides services such as trade, transport, health care and education.
When did services employ more people worldwide than farming?
The episode says the ILO’s modelled estimates place the crossover in 2001. The source does not provide the underlying table or further methodological detail in the supplied material.
Does the episode show that automation will become a separate sector?
No. It presents that idea as the author’s thesis about a possible future. The supplied source does not establish that automation will form a separate sector or specify when that might happen.
Source: Thorsten Meyer AI
