Diaspora, migration & demographic change
GS-1 lesson on the Indian diaspora, internal and international migration, remittances, and demographic transition shaping Indian society.
The world's largest diaspora
India hosts the world's largest diaspora. The UN International Migrant Stock 2020 placed the Indian-origin overseas population at about 18 million, ahead of Mexico (11 million) and Russia. The Ministry of External Affairs (MEA) classifies the diaspora into Non-Resident Indians (NRIs, Indian citizens abroad) and Persons of Indian Origin (PIOs), the latter now subsumed under the Overseas Citizen of India (OCI) scheme created by the Citizenship (Amendment) Act, 2005. The Pravasi Bharatiya Divas, observed on 9 January since 2003, marks Mahatma Gandhi's 1915 return from South Africa and institutionalises diaspora engagement.
Historical waves
Diaspora formation occurred in distinct phases. The indentured labour migration (1834-1920) under the British 'girmitiya' system carried Indians to Mauritius, Fiji, Trinidad, Guyana, Suriname and South Africa after the abolition of slavery (Slavery Abolition Act, 1833). The system was abolished in 1917 following nationalist agitation led by Gokhale and Gandhi. A second wave saw traders and professionals move to East Africa and Southeast Asia. The post-1947 phase split into the skilled migration to the UK, USA, Canada and Australia (doctors, engineers, IT professionals after the US Immigration Act of 1965) and the labour migration to the Gulf following the 1973 oil boom.
Remittances and 'brain drain' versus 'brain gain'
India is the world's top remittance recipient. The World Bank's Migration and Development Brief recorded inflows of roughly USD 111 billion in 2022 and over USD 125 billion in 2023, exceeding FDI inflows and cushioning the current account. Remittances sustain household consumption in Kerala (the 'Gulf economy'), Punjab and Gujarat. The Kerala Migration Survey (Centre for Development Studies) has tracked this dependence since 1998.
The sociological debate moves from brain drain — the loss of trained professionals, costed by economists like Jagdish Bhagwati who proposed a 'brain drain tax' — to brain gain and brain circulation, where returnees and transnational networks transfer capital, skills and entrepreneurship (Silicon Valley's Indian-origin founders; the role of the diaspora in the 2008 Indo-US nuclear deal lobbying). The diaspora also exercises political influence and, occasionally, exports communal and regionalist tensions (Khalistan mobilisation abroad).
Governance architecture
The erstwhile Ministry of Overseas Indian Affairs (2004) was merged into the MEA in 2016. Worker protection rests on the Emigration Act, 1983, the eMigrate portal, and the Pravasi Bharatiya Bima Yojana insurance scheme. The Madhav Das Nair / High Level Committee on the Indian Diaspora (L.M. Singhvi, 2001) shaped policy and recommended PIO/OCI cards. Vulnerabilities of low-wage Gulf workers — the kafala sponsorship system, contract substitution, and crises such as the 2020 COVID-19 repatriation under Vande Bharat Mission — remain live policy concerns.