Why in the News
Survey evidence shows the recorded Other Backward Class share of India's population rising at a rate no human fertility can produce, which points to reclassification rather than births. The finding shifts the caste census debate from the design of the question to the incentives the question creates, since a self declared category that carries an entitlement will be answered strategically.
What is the fertility test for auditing a group's growth?
- The logic: A group's population can rise only through births exceeding deaths, through migration, or through people newly identifying with it, so an implausible growth rate isolates reclassification as the cause.
- The demographic fingerprint: Fertility leaves a mark on the age structure, because a group growing through births must be over represented among children relative to adults.
- The diagnostic that follows: Where a group's share rises among adults as fast as among children, the growth is not coming from births, since adults are not born.
- Why it is decisive: The test needs no assumption about honesty, only the arithmetic relationship between fertility, age structure and growth.
What is the Hutterite fertility benchmark?
- Who they are: The Hutterites are an Anabaptist community of the North American plains who married early, used no contraception, and had good nutrition and medical care.
- Why they are the benchmark: Their total fertility rate of 10.9 children per woman is treated as the outer limit of human fertility, and their population growth from 443 in 1880 to 8,542 by 1950, a rate of 4.32 percent a year, is the ceiling against which any other group's growth is indexed.
What is the NSS and PLFS caste share series?
- What the surveys are: The National Sample Survey (NSS) and its successor, the Periodic Labour Force Survey (PLFS), are the government's large sample household surveys, which record the social group each household reports itself as belonging to.
- Why the series matters: These surveys are the only continuous national record of self reported caste category shares between censuses, so the trend in the OBC share is read from them.
Why do the recorded OBC numbers imply impossible growth?
- The starting point: In 1999-2000, 35.7 percent of Indians said they were Other Backward Class.
- Five years on: By 2004-05, 40.9 percent did, while India's population grew at 1.8 percent a year.
- The implied rate: The OBC population moved from 357 million to 447 million in five years, a growth rate of 4.6 percent a year.
- The mirror movement: The General category, meaning those who are neither OBC nor Scheduled Caste nor Scheduled Tribe, fell from 359 million to 342 million, shrinking at 0.95 percent a year.
- Above the human ceiling: A rate of 4.6 percent a year exceeds the Hutterite rate of 4.32 percent, so on the survey evidence India's OBCs out reproduced the outer limit of human fertility.
- Not a five year aberration: Between 1999 and 2025 the OBC population nearly doubled, from 357 million to 674 million, while the General category shrank from 359 million to 350 million.
- The share of all growth: India added 456 million people over those 26 years, so a group that was 36 percent of the country in 1999 accounted for 70 percent of every person added since.
What does the age structure show?
- The 2004 gap: The OBC share among children under 15 exceeded the OBC share among adults by just 2.0 percentage points.
- The 2025 gap: That gap had narrowed to 1.2 percentage points, even as the OBC share climbed a further five points.
- What real growth would look like: At Hutterite fertility, OBCs would account for three quarters of all births and be over represented among children by more than 30 percentage points.
- Even at a lower fertility: A total fertility rate of six would still require an over representation of 20 percentage points.
- A genuine differential for comparison: Muslims, who do have higher fertility, were over represented among children by 3.2 points in 2004, widening to 4.3 by 2025.
- The conclusion the data force: The OBC share is rising almost as fast among adults as among children, which is the signature of reclassification, not of births.
Why would households reclassify?
- The entitlement attached to the answer: India allocates reserved places in education and public employment on the basis of caste category, so the category recorded carries a measurable benefit.
- The answer is self chosen: A survey or census question that asks for the category invites the respondent to select her own entitlement rather than state a fact about herself.
- No dishonesty is required: The claim is not about the honesty of Indians, it is the standard proposition that people respond to incentives.
- The response is invisible to the rule maker: Those who design the classification rarely observe the behavioural response the classification produces.
- The result for the data: The recorded category becomes a measure of the incentive structure rather than a measure of the population.
What does the Christian and Sikh comparison show?
- The fertility baseline: Christians have the highest female education in India and among the lowest fertility, at 2.4 children per woman, against 2.8 for Hindus and 3.6 for Muslims on the 1998-99 National Family Health Survey.
- The only lower group: Sikhs were lower still, at 2.3 children per woman.
- What Sikhs did: Between 1991 and 2011 Sikhs grew at 1.2 percent a year, exactly as their fertility predicts.
- What Christians did: With virtually the same fertility, Christians grew at 1.9 percent a year, faster than Hindus and matching the national average.
- The arithmetic mismatch: Achieving that growth demographically would need a fertility rate near 3.3, not the recorded 2.4.
- The incentive behind it: A Christian of backward caste origin can sit on State and central OBC lists and claim reservation while simultaneously holding notified minority status with the institutional protections of Article 30, under which minority institutions set their own admissions and are exempt from quota obligations.
- The limit on that position: What such a person cannot claim is Scheduled Caste status, which is why the incentive runs towards the OBC and minority combination.
- The separate question: Whether that double classification is an anomaly or a form of justice is a distinct argument, but that it creates an incentive is not arguable.
Where else does the same incentive logic appear?
- Capital leaving: Indian promoters sent a record 33.3 billion dollars abroad last year while domestic private investment stagnated.
- Investment falling: Net foreign direct investment has fallen to 0.18 percent of gross domestic product.
- The usual explanation rejected: The outcome is attributed to a failure of animal spirits, with appeals to industrialists to invest at home, though no participant is behaving badly.
- The dispute resolution cost: A firm choosing between a factory in India and one abroad faces a bilateral investment treaty requiring 60 months in Indian courts before arbitration can begin.
- The compliance cost: It faces 765 Quality Control Orders, against 14 in 2014.
- The market access cost: It faces no trade agreement with the United States, the market that absorbs 42 billion dollars of Indian exports.
- The common explanation: The firm responds exactly as the incentives instruct, and so do the households that discovered they were OBC in 2004.
Does counting caste settle what it is meant to settle?
- The case for counting: India allocates education and employment on caste, so the state must know the distribution it is allocating against.
- What counting cannot do: A count of a self declared category measures the response to an entitlement, not the underlying social structure.
- The prior diagnosis it revises: An earlier commentary held that the caste census had been killed by the technical choice of an open ended question, which in 2011 produced 4.7 million caste names, and proposed a dropdown menu in its place.
- Why a dropdown is not the fix: Confusion about caste names is not the binding problem, the incentive attached to the category is, and a cleaner menu does not remove it.
- The tension stated plainly: The exercise must be conducted and its result must not be treated as settling the question of who is backward.
How should the caste question be designed instead?
- Ask for the fact, not the entitlement: Ask for caste, sub caste and surname, and never for the category, so the respondent is not invited to choose her own entitlement.
- Move the classification downstream: Let the statistical office, with professional sociologists rather than commentators, map the responses to categories after enumeration.
- Publish the microdata: Release the unit level records so the mapping and its consequences can be independently checked.
- Audit every count against fertility: Test each group's recorded growth against the fertility its own surveys report, since a group whose growth requires Hutterite fertility has not grown.
- Treat the result as evidence, not verdict: Use the count as one input into allocation decisions rather than as a settlement of the claim to backwardness.
Challenges to relying on self reported caste data
- The category is self selected: A question that offers the reservation category records the choice, not the identity. e.g. the OBC share rose 5.2 percentage points between 1999-2000 and 2004-05 with no corresponding change in the age structure.
- The age structure test is not applied: Statistical offices publish category shares without checking them against the fertility those shares would require. e.g. an OBC growth rate of 4.6 percent a year exceeds the Hutterite ceiling of 4.32 percent and was published unremarked.
- Multiple classifications can be held at once: A person can hold benefits flowing from two separate classifications simultaneously. e.g. a Christian of backward caste origin can hold OBC listing along with minority status protected by Article 30.
- State lists differ from the central list: The same community may be backward in one jurisdiction and not in another, so a national count is not additive. e.g. the 105th Constitutional Amendment, 2021 was enacted to restore the States' power to maintain their own backward class lists.
- Microdata is withheld: Without unit level records, no independent check on the classification is possible. e.g. the raw caste data of the 2011 Socio Economic and Caste Census were never released.
- Counting raises the stakes of the count: Publication of group shares immediately becomes an argument for revising quota percentages. e.g. State caste surveys have been followed by demands to raise reservation beyond the 50 percent ceiling.
- Survey and census definitions diverge: Survey social group codes and census caste entries are not the same instrument, so the two series cannot be spliced. e.g. the NSS records four social group codes while the Census will record open ended caste names.
Conclusion
The recorded growth of India's Other Backward Classes is arithmetically impossible as a demographic event and is explicable only as reclassification in response to entitlement. The same logic explains the Christian growth rate that fertility cannot support and the investment that leaves a jurisdiction charging 60 months of litigation and 765 Quality Control Orders. Counting caste is still necessary, because the state allocates on caste and must know what it is allocating against. What must be abandoned is the belief that the count settles the question, since a self declared count measures the incentive as much as the population.
What are the Other Backward Classes?
- About: Other Backward Classes are communities identified by the state as socially and educationally backward, distinct from the Scheduled Castes and Scheduled Tribes, and entitled to reservation in education and public employment.
- Rationale: The category exists to extend substantive equality to groups whose backwardness arises from social and educational disadvantage rather than from untouchability or geographical isolation.
- The identification test: Backwardness is determined on social, educational and economic indicators, with caste permitted as a starting point but not as the sole criterion.
- The named typology in use:
- Central List: Maintained by the Union government for reservation in central government posts and central educational institutions, now referenced by Article 342A.
- State Lists: Maintained by each State for its own posts and institutions, with membership frequently differing from the Central List.
- Creamy layer: The economically advanced section within an OBC household, excluded from reservation, with the income and status criteria revised periodically.
- The reservation quantum: 27 percent of central government posts and central educational institution seats are reserved for non creamy layer OBCs.
Key Concerns Regarding the Other Backward Classes Framework
- Absence of an authoritative count: No caste wise population figure for OBCs has been published since 1931, so the 27 percent quantum rests on an estimate rather than a count.
- Unequal distribution within the category: A small number of dominant communities capture a disproportionate share of reserved places, which is the basis of the sub categorisation demand.
- Self declaration and the creamy layer: Creamy layer exclusion relies on income and status certificates whose verification is weak, so the exclusion is imperfectly enforced.
- Pressure on the 50 percent ceiling: Successive State enactments raising total reservation above the ceiling laid down in Indra Sawhney have been struck down, leaving the demand unresolved.
- Confusion between category and caste: Administrative records capture the reservation category rather than the community, which prevents any assessment of which communities the benefit actually reaches.
- Federal friction over list making: The power to identify backward classes moved between the Union and the States through the 102nd and 105th Constitutional Amendments, leaving two parallel lists in operation.
Constitutional Provisions Related to Caste Based Classification
- Article 15(4): Enables the State to make special provision for socially and educationally backward classes and for Scheduled Castes and Scheduled Tribes.
- Article 15(5): Enables reservation in admission to private educational institutions, aided or unaided, excluding minority institutions.
- Article 15(6) and Article 16(6): Inserted by the 103rd Constitutional Amendment, 2019, providing 10 percent reservation for economically weaker sections.
- Article 16(4): Enables reservation in appointments for any backward class not adequately represented in State services.
- Article 16(4A) and 16(4B): Provide for reservation in promotion with consequential seniority for Scheduled Castes and Scheduled Tribes, and for carrying forward unfilled reserved vacancies.
- Article 30: Guarantees minorities the right to establish and administer educational institutions of their choice, the provision that exempts minority institutions from quota obligations.
- Article 335: Requires that claims of Scheduled Castes and Scheduled Tribes be considered consistently with the maintenance of efficiency of administration.
- Article 338B: Establishes the National Commission for Backward Classes as a constitutional body, inserted by the 102nd Constitutional Amendment, 2018.
- Article 340: Empowers the President to appoint a Commission to investigate the conditions of socially and educationally backward classes.
- Article 342A: Provides for the Central List of socially and educationally backward classes, with the 105th Constitutional Amendment, 2021 restoring the States' power to maintain their own lists.
Commissions and Official Initiatives on Backward Classes
- Kalelkar Commission, 1953: The first Backward Classes Commission appointed under Article 340, whose report was not acted upon by the Union government.
- Mandal Commission, 1979: The second Backward Classes Commission, which reported in 1980 and recommended 27 percent reservation for OBCs, implemented from 1990.
- National Commission for Backward Classes: Set up in 1993 following the Indra Sawhney judgment, given constitutional status in 2018 by the 102nd Constitutional Amendment.
- Rohini Commission, 2017: Appointed under Article 340 to examine sub categorisation of OBCs within the 27 percent quota, so that benefits are distributed more evenly across communities.
- Creamy layer income ceiling revisions: Periodic revisions by the Department of Personnel and Training of the income and status criteria that exclude the advanced section within OBCs.
- National Family Health Survey and Periodic Labour Force Survey: The two national survey instruments that carry social group identifiers and are the source of the caste category share series between censuses.
Key Facts about Caste, Reservation and Fertility Data
- The 50 percent ceiling on total reservation was laid down in Indra Sawhney v Union of India (1992), which also introduced the creamy layer exclusion for OBCs.
- 27 percent is the OBC reservation in central government posts and central educational institutions, and 10 percent is the economically weaker sections quota introduced in 2019.
- 1931 was the last Census whose caste data were released, recording 4,147 castes.
- Replacement level fertility is a total fertility rate of about 2.1 children per woman, the level at which a generation exactly replaces itself once child mortality is accounted for.
- India's total fertility rate fell to 2.0 in the fifth National Family Health Survey, 2019-21, below replacement level.
- Total fertility rate is the average number of children a woman would bear over her lifetime at prevailing age specific fertility rates, which is why it is comparable across groups of different age structures.
Challenges in Caste Based Affirmative Action
- No current population base: Quotas are fixed against estimates rather than an enumerated caste population. e.g. the 27 percent OBC quota rests on the Mandal Commission's estimate derived from the 1931 Census.
- Unequal capture within categories: A few communities within a category take most of the reserved places. e.g. the Rohini Commission was appointed in 2017 precisely because benefits within the OBC quota were found to be concentrated.
- Creamy layer enforcement: Income and status certificates are issued without effective verification, so the excluded section is not consistently excluded. e.g. repeated departmental instructions have been issued on the correct computation of the creamy layer income ceiling.
- Litigation over the ceiling: State laws raising reservation above 50 percent are struck down, leaving political demands unmet and entitlements unstable. e.g. the Maratha reservation enactment was set aside by the Supreme Court in 2021 for breaching the ceiling.
- Reservation without expansion of opportunity: The quota redistributes a shrinking pool of public sector posts rather than creating new ones. e.g. government employment has grown far more slowly than the number of aspirants competing in public examinations.
- Category based data collection: Administrative systems record the reservation category rather than the community, so outcomes by community cannot be measured. e.g. no published dataset shows which OBC communities occupy the reserved posts filled each year.
- Minority institution exemption: Institutions covered by Article 30 stand outside the quota framework, which creates unequal obligations across comparable institutions. e.g. minority educational institutions set their own admissions and are exempt from the reservation applied to other aided institutions.
Back2Basics: Mandal Commission
- Formal name: The Second Backward Classes Commission, appointed in 1979 under Article 340 of the Constitution.
- Chairperson: Headed by B. P. Mandal, from whom the Commission takes its name.
- Report submitted: Reported in 1980, recommending 27 percent reservation for Other Backward Classes in central government services and public sector undertakings.
- Basis of its estimate: Estimated the OBC share of the population at about 52 percent, extrapolating from the 1931 Census, since no later caste count existed.
- Method of identification: Used eleven indicators grouped under social, educational and economic heads to identify backwardness, with social indicators weighted highest.
- Implementation: Recommendations were implemented for central government posts from 1990 and extended to central educational institutions by the 93rd Constitutional Amendment, 2005.
- Judicial outcome: Upheld in Indra Sawhney v Union of India (1992), which fixed the 50 percent ceiling, excluded the creamy layer, and barred reservation in promotions for OBCs.
Way Forward
- Record community, not category: Design the schedule to ask for caste, sub caste and surname and leave category mapping to the statistical office.
- Publish unit level microdata: Release anonymised records so the classification and its consequences can be independently verified.
- Institutionalise the fertility audit: Require the statistical office to publish, alongside every group share, the fertility rate that the recorded growth would require.
- Reconcile survey and census series: Align social group codes in the National Sample Survey and the Periodic Labour Force Survey with the Census code frame so the two series are comparable.
- Complete sub categorisation: Act on the sub categorisation exercise so the benefit is distributed within the OBC category rather than captured by dominant communities.
- Verify creamy layer certification: Link income and status certificates to tax and employment records so the exclusion is enforced rather than declared.
- Separate the count from the quota decision: Treat the enumeration as an evidence gathering exercise, with quota revision decided through the constitutional process rather than triggered automatically by the count.
Matching Previous Year Question
“[2023, GS1, 15 marks] Why is caste identity in India both fluid and static?”


