Labor as a Factor of Production: Meaning and Examples

Labour is the human effort, physical and mental, applied to production — the second of the classical factors, and in agriculture the one most often supplied by the household rather than bought in a market.

The question it raises on every farm is: who actually does the work, and what is their time worth?

Labour is one of the Factors of Production, and its conventional return is the wage. What makes agricultural labour distinctive is how rarely that wage is actually paid.

What Is Labour in Agricultural Economics?

Labour has two dimensions, and confusing them is a common error. The first is quantity: hours, days or full-time equivalents of work. The second is quality, usually called human capital — the schooling, experience, extension training, skill and health that determine how much a given hour actually accomplishes. An hour of ploughing by an experienced operator and an hour by a novice are not the same input, even though a labour survey records them identically.

Four features distinguish labour in farming from labour in a factory.

It is intensely seasonal. Demand spikes at land preparation, transplanting and harvest, then collapses. Because the work cannot be stored or brought forward, a farm may face a binding labour constraint for three weeks of the year and idle hands for the rest. Much of the design of farming systems — crop mixes, staggered planting dates, mechanisation choices — is a response to this single fact.
Most of it is unpaid family labour. Over 90 percent of the world’s 608 million farms are family farms, and on them work is contributed by household members without an explicit wage. This does not make the labour free. Its cost is the Opportunity Cost of the next-best use of that time: an off-farm job, a trading activity, schooling, or rest. Budgets that omit family labour make a farm look more profitable than it is.
Rural labour markets are thin and imperfect. Hiring involves searching, supervising and trusting. Because effort in farming is hard to observe and hard to standardise across scattered plots, supervision costs are high — one of the main economic reasons family farms have persisted rather than being displaced by large wage-labour enterprises.
Tasks are strongly gendered. In most farming systems, weeding, processing, seed selection and livestock care follow customary divisions between men and women, with consequences for who controls the resulting income.

Why Does Labour Matter?

For the farm manager, labour is usually the second-largest cost after land or purchased inputs, and the one with the tightest timing. Missing the weeding window costs more yield than any spreadsheet suggests. Deciding whether to hire, to swap labour with neighbours, or to buy a machine is a decision about substituting Capital for labour, and it turns on the relative price of the two.

For the household, the allocation of time between the farm, off-farm work, migration and school is the central economic decision, and it shapes long-run welfare far more than any single cropping choice.

For the economy, the movement of labour out of agriculture is the defining feature of development. Every country that has become rich has done so while the share of its workforce in farming fell.

How Large Is the Agricultural Workforce?

Drawing on International Labour Organization data, FAO reports that in 2023 the agricultural sector — including forestry and fishing — employed 916 million people worldwide, or 26.1 percent of total employment. Women made up 39.6 percent of the global agricultural workforce. The regional spread is enormous: the share of employment in agriculture was highest in Africa at 46 percent and lowest in Europe at about 5 percent.

Widening the lens to agrifood systems as a whole — including processing, trade and transport — nearly 1.3 billion people were employed in 2022, roughly two out of every five workers on earth. In Africa and Asia around 70 percent of that agrifood employment is in primary agriculture, compared with 32 to 45 percent in the Americas, Europe and Oceania. As countries grow richer, the workforce does not simply leave food; it moves from the field to the rest of the chain.

Why Is Output per Farm Worker So Low?

One of the most persistent findings in development economics is the agricultural productivity gap. In national accounts, value added per worker is much higher outside agriculture than inside it, and the disparity is largest in poor countries — on the order of a factor of four in developing countries on average.

Taken at face value, that looks like a straightforward misallocation: move workers out of farming and world output rises. But measurement could explain much of it. Farm workers may put in fewer hours, have less schooling, or produce output that national accounts understate. A study in the Quarterly Journal of Economics tested exactly this, using micro survey data to adjust for hours worked, human capital per worker and alternative household-survey measures of sectoral output. Even after all those corrections, a puzzlingly large gap remained.

The gap has practical weight. It helps explain rural-urban migration, the low wages that farm labour commands, and why raising agricultural productivity is treated as a poverty-reduction strategy rather than merely a food-supply strategy. It also warns against naive readings: the fact that output per worker is low in agriculture does not by itself mean any individual farmer would earn more by leaving, since the barriers that sustain the gap — skills, capital, migration costs, informal ties to land — are real.

Key Takeaways

Labour is the human effort applied to production, comprising both a quantity dimension (hours) and a quality dimension (human capital).
Agricultural labour is highly seasonal, so farms can face acute shortages for a few weeks and surplus capacity for the rest of the year.
Most farm labour worldwide is unpaid family labour, but its true cost is the opportunity cost of the time, which budgets frequently ignore.
High supervision costs in farming are a major economic reason why family farms have persisted.
In 2023 agriculture employed 916 million people, 26.1 percent of world employment; women made up 39.6 percent of that workforce.
The share ranges from about 46 percent of employment in Africa to about 5 percent in Europe.
Value added per worker is roughly four times higher outside agriculture than inside it in developing countries, and a large gap survives even after correcting for hours worked, schooling and output measurement.

Frequently Asked Questions

What is labour as a factor of production?

Labour is the human physical and mental effort applied to production. It has both a quantity dimension — hours or days worked — and a quality dimension, known as human capital, which covers the skill, experience and health that determine how much a given hour of work actually produces. Its conventional return is the wage.

What counts as agricultural labour?

Agricultural labour covers all work performed in cultivating, harvesting, and raising livestock or fish on a holding, including management and organisational tasks such as buying and selling. It is typically split into family labour, contributed by the holder and relatives without an explicit wage, and non-family labour, which is hired and paid.

Why is so much farm labour unpaid?

Over 90 percent of the world’s farms are family farms, worked mainly by household members rather than hired employees. That labour is not free — its true cost is the opportunity cost of the next-best use of the family’s time — but because no wage changes hands, farm budgets that ignore it can make a farm look more profitable than it actually is.

Why does the share of workers in agriculture fall as a country develops?

As productivity rises and off-farm jobs open up, workers move out of farming into industry and services, which is why the share of a country’s workforce in agriculture is closely watched as a rough marker of income level: countries with only a few percent of their workforce in agriculture tend to be high-income, while those with agriculture employing half the workforce or more tend to be low-income.

Continue Exploring

References and Further Reading

Gollin, D., Lagakos, D. & Waugh, M. E. (2014). The agricultural productivity gap. The Quarterly Journal of Economics, 129(2), 939–993. https://doi.org/10.1093/qje/qjt056
Lowder, S. K., Sánchez, M. V. & Bertini, R. (2021). Which farms feed the world and has farmland become more concentrated? World Development, 142, 105455. https://doi.org/10.1016/j.worlddev.2021.105455
FAO. Employment indicators 2000–2023. FAOSTAT. https://www.fao.org/statistics/highlights-archive/highlights-detail/employment-indicators-2000-2023-(july-2025-update)/en
FAO. Estimating global and country-level employment in agrifood systems. FAO Statistics Working Paper Series. https://openknowledge.fao.org/server/api/core/bitstreams/08f5f6df-2ef2-45a2-85aa-b29c2ce01422/content
International Labour Organization. ILOSTAT: labour statistics database. https://ilostat.ilo.org/
Ag Labor Economics. Migration News, Vol. 17, No. 4, UC Davis Migration Dialogue. https://migration.ucdavis.edu/rmn/more.php?id=1647
FAO. Statistical Yearbook: World Food and Agriculture 2024. https://openknowledge.fao.org/server/api/core/bitstreams/d784864f-7f28-49d2-903e-6680d09a9d97/content/cd2971en.html
Fuglie, K., Morgan, S. & Jelliffe, J. (2024). World Agricultural Production, Resource Use, and Productivity, 1961–2020 (Report No. EIB-268). USDA Economic Research Service. https://ers.usda.gov/sites/default/files/_laserfiche/publications/108650/EIB-268.pdf