2 Push-Pull Factors in Migration
Explore why people move, how conditions at origins and destinations interact with resources and constraints, and how migration reshapes population patterns.
and its main influences
is the movement of people away from their usual place of residence, either within a country or across an international border. are conditions at or near a place of origin that encourage departure, while are conditions at or near a destination that attract people there.
These categories help describe reasons for moving, but rarely results from a single factor. People weigh opportunities and risks, encounter obstacles such as costs or border restrictions, and make decisions shaped by their circumstances and connections.
Categories of factors
Conditions that may encourage departure or attract people to a destination span economic, political, social, environmental, and demographic areas. These categories can overlap.
Economic: Unemployment, low wages, insecure work, economic crisis, or loss of a livelihood may encourage departure. Jobs, higher wages, stable work, access to markets, and prospects for advancement may attract people.
Political: War, violence, persecution, political instability, or restrictions on rights may encourage departure. Safety, political stability, protection, and the ability to exercise rights may attract people.
Social: Limited access to education, health care, or other services, as well as discrimination and family separation, may encourage departure. Better services, greater social inclusion, education, and family reunification may attract people.
Environmental: Floods, storms, drought, water scarcity, land degradation, and other changes that threaten homes or livelihoods may encourage departure. Safer locations, more reliable water or land, and livelihoods less exposed to environmental hazards may attract people.
Demographic: Rapid population growth, or a large number of people entering working age relative to available jobs and services, may encourage departure. Labour demand, more employment opportunities, or worker shortages associated with an ageing population may attract people.
How conditions combine
The categories can reinforce one another. An environmental shock may damage crops and income, creating economic pressure; it may also strain local services and deepen competition over resources, adding social or political pressures.
A prolonged dry period in a drought-prone rural area where farming is a major source of work may reduce harvests and household income. If jobs are scarce and public support is limited, these economic and social pressures may strengthen the incentive to move. A nearby city may attract people with wage work, schools, health care, or relatives who can help with housing and job searches. Drought is not the sole cause: environmental stress, livelihood insecurity, available destinations, household resources, and personal ties combine to shape who moves and where they go. Water-related shocks are one factor among several associated with patterns.
Resources and constraints
Whether people move partly depends on their capacity to adapt or relocate. People with savings, transport, information, or family support may be more able to move; others may be unable to leave even when conditions worsen. Environmental change can therefore increase mobility in some circumstances and constrain it in others.
The same conditions do not produce the same choices for everyone. Opportunities and risks, costs, border restrictions, available support, and personal circumstances all shape whether people move and which destinations they can reach.
Routes and
When many people respond to similar conditions, their choices form between identifiable origins and destinations. Flows may be rural-to-urban, between regions, or across national borders.
The geography of movement is shaped not only by conditions at origins and destinations, but also by distance, travel costs, policies, transport links, and . Existing communities abroad or in a destination city can offer information and practical support, making some routes more accessible than others. , including climate-related movement within countries, is not limited to movement across national borders.
How reshapes places
redistributes population across space. It can contribute to the growth of destination cities and regions while changing the size and age structure of the places people leave.
Out- may reduce local labour supply. In- can add workers and increase demand for housing, schools, transport, and health services. These effects vary with the scale and pace of movement and with how well institutions and infrastructure respond.