Why does a farmer in Bundelkhand leave his fields for a construction site in Surat? Why does a software engineer from Hyderabad accept a job in Toronto? Both decisions involve the same underlying logic: a careful, often unconscious, weighing of what is missing at home against what might be available elsewhere. Demographers call these forces the determinants of migration, and they are most commonly grouped into push factors, pull factors, and a third category of mixed variables that can do both jobs depending on the person and the moment.
Table of Contents
- The classical framework: Lee’s push-pull theory
- Push factors: what drives people away
- Population pressure and agrarian distress
- Unemployment, low wages, and poverty
- Natural disasters and environmental stress
- Social conflict and discrimination
- Inadequate services
- Pull factors: what attracts migrants
- Economic opportunities
- Better services and quality of life
- Political freedom and stability
- Social networks and chain migration
- Mixed variables: factors that push and pull
- Technological change
- Environmental and climate factors
- Education
- Marriage and family
- Intervening obstacles and personal factors
- Why this framework still matters, and where it falls short
The classical framework: Lee’s push-pull theory
The push-pull lens dates back to sociologist Everett S. Lee’s 1966 paper “A Theory of Migration”, which built on Ernst Ravenstein’s nineteenth-century laws of migration. Lee argued that every place has a set of positive factors that hold people or attract them, negative factors that repel them, and neutral factors that most people are indifferent to. Migration, in his view, is the net result of the interplay between these forces at the origin and the destination, filtered through intervening obstacles like distance, cost, visa rules, or family responsibilities.
Two ideas in Lee’s framework still shape modern research. First, the decision to move is rarely fully rational; people have near-complete information about their place of origin but only partial, often rosy, information about the destination. Second, not everyone in a household actually chooses; children, spouses, and dependents often migrate because someone else decided. This is why migration studies in India treat the household, not the individual, as the unit of analysis.
Push factors: what drives people away
Push factors are the negative conditions at the place of origin that make staying difficult or unattractive. In the Indian context, they cluster around a few persistent themes.
Population pressure and agrarian distress
Rural India still depends heavily on agriculture, but landholdings keep shrinking with each generation. The average operational holding has fallen to roughly 1.08 hectares, and over 86% of farmers are now classified as small or marginal. When too many people depend on too little land, surplus labour has nowhere to go. Combine this with low productivity, monsoon dependency, and rural indebtedness, and you get the kind of distress that pushes young men out of villages in Bihar, Uttar Pradesh, Odisha, and Jharkhand toward construction sites and factories in Delhi, Mumbai, and Surat.
Unemployment, low wages, and poverty
A meta-analysis of Indian migration data found that the dominant push factors were lack of jobs, low wages, poor financial condition, debt on the family, social insecurity, and social discrimination. In the same study of Bihar-to-Gulf migrants, 41% reported moving mainly because of push factors. A daily-wage worker in a UP village earning a few hundred rupees a day will rationally consider Kerala, where minimum wages and informal-sector pay are significantly higher.
Natural disasters and environmental stress
India is highly exposed to floods, cyclones, droughts, and heatwaves. The Climate Action Network South Asia estimates that nearly 45 million Indians could be forced to migrate by 2050 because of climate disasters, roughly three times today’s figure. Coastal Odisha and West Bengal already see steady streams of people moving inland after recurring cyclones. The Sundarbans, where saltwater intrusion is destroying paddy fields, has become almost a textbook case of slow-onset environmental displacement.
Social conflict and discrimination
Communal tensions, caste-based violence, and insurgency have repeatedly produced migration waves: Kashmiri Pandits in 1990, displacement during the Bodo conflicts in Assam, and movement out of Naxal-affected belts in Chhattisgarh and Jharkhand. At a more everyday level, caste discrimination and the denial of dignified work continue to push Dalit and Adivasi households toward anonymous urban labour markets where social hierarchies are less visible, if not absent.
Inadequate services
Poor schools, distant hospitals, unreliable electricity, and weak public transport are quieter push factors that rarely make headlines but shape family decisions deeply. Parents migrate so their children can access better education; women migrate after marriage, but increasingly also for higher studies and jobs in cities with safer infrastructure.
Pull factors: what attracts migrants
Pull factors are the positive conditions at the destination that make moving worthwhile. They are essentially the mirror image of push factors, but it is important to remember that perception matters as much as reality; the destination only needs to look better than the origin.
Economic opportunities
The single strongest pull factor in India is the prospect of work and higher income. Mumbai, Delhi NCR, Bengaluru, Chennai, Hyderabad, and Surat function as magnets because they offer construction work, factory jobs, domestic service, gig economy roles, and white-collar employment all at once. According to the 2011 Census, “work or employment” was cited as the principal reason by a majority of male internal migrants, while “marriage” dominated for women. The pattern of unskilled labour flowing from northern states to the southern and western industrial belts has only intensified in the last decade.
Better services and quality of life
Cities offer concentrated access to specialised healthcare, reputed schools and universities, modern housing, sanitation, and entertainment. A student moving from Siliguri to Delhi for higher education, or a family relocating to Pune for paediatric cancer treatment, is responding to the same logic: the destination has something the origin cannot provide.
Political freedom and stability
For international migrants, pull factors often include political stability, the rule of law, and personal freedoms. A cross-sectional study of Kerala migrants in Western countries found that quality of life and better governance were among the strongest pull factors, alongside higher wages and educational opportunities. For internal migrants, this translates into a preference for destinations with less harassment, better policing, and predictable labour rights.
Social networks and chain migration
People rarely move into a complete vacuum. The presence of relatives, neighbours, or community members at the destination dramatically lowers the perceived risk of moving. This is why migrants from a single district in Bihar may concentrate in specific neighbourhoods of Delhi, and why entire pockets of Kerala have moved to particular Gulf cities. Social networks supply information, initial accommodation, job referrals, and emotional support, all of which act as powerful pull factors in their own right.
Mixed variables: factors that push and pull
Some determinants do not fit neatly into either box. Their effect depends on where you stand, what you have, and what you want.
Technological change
Technology can be a powerful pull factor when it creates new industries: the IT boom pulled lakhs of engineers into Bengaluru and Hyderabad, and the mobile gig economy now pulls workers into delivery and ride-hailing roles in every metro. But the same technology is a push factor for those displaced by it. Mechanisation in Punjab and Haryana’s agriculture reduced the demand for manual labour, pushing workers out. Automation in textile mills has done the same. Whether a technological shift pushes or pulls depends on whether you have the skills to ride the wave or are left behind by it.
Environmental and climate factors
Environmental conditions are perhaps the clearest example of a mixed variable. Recurring droughts in Marathwada push farmers out, while reliable rainfall and irrigation in canal-fed regions pull agricultural labour in. A 2025 state-wise vulnerability assessment found that flood-affected populations are a major push factor, with Assam, the Andaman and Nicobar Islands, and Madhya Pradesh ranking as the most vulnerable states. Meanwhile, ecologically attractive regions, such as the hill stations of Himachal Pradesh and Uttarakhand, pull in tourism workers, retirees, and remote professionals. The same environment can repel and attract different people simultaneously.
Education
Education is both cause and consequence of migration. The absence of good colleges pushes students out of small towns; the presence of premier institutions in Delhi, Bengaluru, and Pune pulls them in. Once educated, the same individual may face a new push if local job markets cannot absorb their qualifications, a phenomenon visible across Tier-2 and Tier-3 Indian cities.
Marriage and family
For Indian women, marriage remains the single largest reported reason for migration, but it acts as both push and pull. Patrilocal residence pushes women out of their natal homes; the destination household pulls them in. Whether this counts as voluntary migration is itself a debated question in gender and migration scholarship.
Intervening obstacles and personal factors
Push and pull factors do not operate in a vacuum. Lee’s original model emphasised intervening obstacles, the friction between origin and destination. Distance, transport costs, visa rules, language barriers, and lack of money can prevent migration even when both push and pull are strong. The COVID-19 lockdowns made this brutally visible when millions of internal migrants found themselves stranded between an origin they had left and a destination that no longer wanted them.
Personal factors matter too. Age, gender, education, marital status, risk appetite, and family obligations all influence whether a particular bundle of push and pull factors actually results in movement. Two people facing identical conditions in the same village may make opposite decisions.
Why this framework still matters, and where it falls short
The push-pull model has lasted because it is simple, intuitive, and broadly accurate. It helps policymakers think about migration as a response to gradients, in jobs, wages, services, safety, environment, rather than as a problem to be stopped at borders.
But it has well-known limits. Critics like Hein de Haas argue that the model cannot explain why migration often increases with development rather than decreasing, why most poor people do not migrate even when conditions are bad, and why social networks and aspirations matter more than raw economic gradients. Modern research increasingly frames migration as climate-augmented rather than climate-caused, recognising that environmental stress interacts with economic, social, and governance factors rather than acting alone.
For students of population studies, the takeaway is that push and pull are the starting point of analysis, not the end of it. Real migration decisions emerge from the messy intersection of structural forces, household strategies, and individual aspirations.
What do you think? If you were advising a state government in eastern India on reducing out-migration, would you focus on weakening the push factors at home or on competing with the pull factors of destination cities? And in your own family or social circle, can you identify a migration story where the “mixed variables” mattered more than the classic push and pull?
References
- https://geographicbook.com/the-lee-migration-theory/
- https://www.fao.org/family-farming/detail/en/c/1637567/
- https://www.sciencedirect.com/science/article/pii/S101836472300321X
- https://www.orfonline.org/expert-speak/climate-change-fueling-climate-migration
- https://censusindia.gov.in/nada/index.php/catalog/40447
- https://cijmr.com/index.php/cijmr/article/view/352
- https://journals.sagepub.com/doi/10.1177/21632324251352961
- https://www.mytutor.co.uk/answers/55128/A-Level/Geography/How-does-Lee-s-Push-and-Pull-model-explain-migration/
- https://link.springer.com/article/10.1007/s10113-026-02564-4

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