Publication: Global Inequality and Economic Growth: The Three Decades before Covid-19 and Three Decades After
Loading...
Date
2025-03-27
ISSN
Published
2025-03-27
Author(s)
Editor(s)
Abstract
Global income inequality captures income differences among all individuals around the world. Global inequality around the world increased from 1820 to 1990 as incomes in richer countries grew faster than incomes in relatively poorer countries. However, these trends were reversed over the three decades starting in 1990. Inequality among all citizens of the world decreased as populous and relatively poorer countries, in particular China, reduced the income gap with richer parts of the world. Growth in average incomes played a critical role in this reduction, with differences within countries contributing relatively little. The Covid-19 pandemic abruptly halted the reduction in global income inequality and was responsible for the largest increase in global income inequality in at least three decades. The future of global inequality largely depends on how incomes grow in various parts of the world. If the trends of the last three decades continue, inequality may increase as growth in those countries that drove the reduction in inequality now contributes to increasing inequality, since these countries are in the upper part of the global distribution. However, if poorer countries today grow faster than their richer peers, global inequality could continue to fall. Climate adaptation and mitigation challenges will play an increasing role in shaping country-level growth trends and thus the changes in global income inequality.
Link to Data Set
Citation
“Garcia Rojas, Diana C.; Yonzan, Nishant; Lakner, Christoph. 2025. Global Inequality and Economic Growth: The Three Decades before Covid-19 and Three Decades After. Policy Research Working Paper; 11093. © World Bank. http://hdl.handle.net/10986/43004 License: CC BY 3.0 IGO.”
Associated URLs
Associated content
Other publications in this report series
Publication Geopolitics and the World Trading System(Washington, DC: World Bank, 2024-12-23)Until the beginning of this century, the GATT/WTO system worked. Economic research provided a compelling explanation. It showed that if governments maximize the well-being of their own countries broadly defined, GATT/WTO principles would facilitate mutually beneficial cooperation over their trade policy choices. Now heightened geopolitical rivalry seems to have undermined the WTO. A simple transposition of the previous rationalization suggests that geopolitics and trade cooperation are not compatible. The paper shows that this is only true if rivalry eclipses any consideration of own-country well-being. In all other circumstances, there are gains from trade cooperation even with geopolitics. Furthermore, the WTO’s relevance is in question only if it adheres too rigidly to its existing rules and norms. Through measured adaptation to the geopolitical imperative, the WTO can continue to thrive as a forum for multilateral trade cooperation in the age of geopolitics.Publication Innovative Financial Instruments and Their Role in the Development of Jurisdictional REDD+(Washington, DC: World Bank, 2025-05-08)Achieving global net zero carbon emissions requires stopping deforestation and making full use of tropical forests as carbon sinks. Market instruments for the sale and purchase of emission outcomes coming from Reducing Emissions from Deforestation and Forest Degradation framework programs could play a very significant role in achieving this goal. The development of these markets has been insufficient so far: their scale as of today is much lower than what would be required to generate meaningful resources for the countries that host tropical forests, and the quality of existing instruments is generally insufficient to allow a scaling up in demand. However, efforts to improve the transparency and integrity of these instruments are accelerating, particularly around jurisdictional Reducing Emissions from Deforestation and Forest Degradation framework programs. In parallel with these efforts, innovations in financial instruments suited for the framework’s carbon markets are also taking place, but their scale is limited so far. This paper looks beyond the current state of the framework’s carbon markets to consider a set of innovative financial instruments that would allow completing the infrastructure of emissions trading, enhancing its utility for both issuers and buyers of carbon credits in the framework’s jurisdictional programs. The paper shows how a combination of forest carbon bonds, where countries sell forward (or commit) their emission reduction outcomes, as well as call and put options can be used to de-risk and encourage early investment in jurisdictional Reducing Emissions from Deforestation and Forest Degradation framework programs. To quantify the value of these innovations, the paper evaluates the potential scale of these instruments for the case of Brazil. The estimates suggest that the amounts that could be mobilized would represent a critical contribution to effective forest conservation. The proposed instruments and methods can be used by other tropical nations that are prepared to implement a large-scale jurisdictional program. Although the paper acknowledges that the current state of carbon markets would still not allow their deployment in the short term, the conclusion is that these instruments have significant potential, and their future development could be an important contribution to the establishment of successful markets for the conservation of tropical forests.Publication Disentangling the Key Economic Channels through Which Infrastructure Affects Jobs(Washington, DC: World Bank, 2025-04-03)This paper takes stock of the literature on infrastructure and jobs published since the early 2000s, using a conceptual framework to identify the key channels through which different types of infrastructure impact jobs. Where relevant, it highlights the different approaches and findings in the cases of energy, digital, and transport infrastructure. Overall, the literature review provides strong evidence of infrastructure’s positive impact on employment, particularly for women. In the case of electricity, this impact arises from freeing time that would otherwise be spent on household tasks. Similarly, digital infrastructure, particularly mobile phone coverage, has demonstrated positive labor market effects, often driven by private sector investments rather than large public expenditures, which are typically required for other large-scale infrastructure projects. The evidence on structural transformation is also positive, with some notable exceptions, such as studies that find no significant impact on structural transformation in rural India in the cases of electricity and roads. Even with better market connections, remote areas may continue to lack economic opportunities, due to the absence of agglomeration economies and complementary inputs such as human capital. Accordingly, reducing transport costs alone may not be sufficient to drive economic transformation in rural areas. The spatial dimension of transformation is particularly relevant for transport, both internationally—by enhancing trade integration—and within countries, where economic development tends to drive firms and jobs toward urban centers, benefitting from economies scale and network effects. Turning to organizational transformation, evidence on skill bias in developing countries is more mixed than in developed countries and may vary considerably by context. Further research, especially on the possible reasons explaining the differences between developed and developing economies, is needed.Publication Economic Consequences of Trade and Global Value Chain Integration(World Bank, Washington, DC, 2025-04-04)This paper introduces a new approach to measuring Global Value Chains (GVC), crucial for informed policy-making. It features a tripartite classification (backward, forward, and two-sided) covering trade and production data. The findings indicate that traditional trade-based GVC metrics significantly underestimate global GVC activity, especially in sectors like services and upstream manufacturing, and overstate risks in early trade liberalization stages. Additionally, conventional backward-forward classifications over-estimate backward linkages. The paper further applies these measures empirically to assess how GVC participation mediates the impact of demand shocks on domestic output, highlighting both the exposure and stabilizing potential of GVC integration. These new measures are comprehensively available on the World Bank’s WITS Platform, providing a key resource for GVC analysis.Publication Labor Market Scarring in a Developing Economy(Washington, DC: World Bank, 2025-05-08)This paper estimates the magnitude of labor market scarring in a developing economy, a setting that has been understudied by the labor scarring literature dominated by advanced economies. The paper assesses the contributions of “stigma” versus “lost human capital,” which cause earnings losses among displaced workers relative to non-displaced workers. The findings indicate that job separations caused by plant closings result in sizable and long-lasting reductions in earnings, with an average decline of 7.5 percent in hourly wages over a nine-year period. The estimate for one year after a plant closing is larger, at a decline of 10.8 percent. In a common sample, after controlling for unobserved, time-invariant individual characteristics, the impact of a plant closing declines from 11.9 to 8.2 percent. These results imply that stigma in the labor market due to imperfect information about workers (captured by unobservable worker characteristics) accounts for 30.8 percent of the average earnings losses, whereas lost employer-specific human capital explains the remaining 69.2 percent. The paper explores the effects of job separations due to plant closings on other labor market outcomes, including hours worked and informality, and provides estimates across genders and levels of education.
Journal
Journal Volume
Journal Issue
Collections
Related items
Showing items related by metadata.
Publication September 2024 Update to the Poverty and Inequality Platform (PIP)(Washington, DC: World Bank, 2024-10-11)The September 2024 update to the Poverty and Inequality Platform (PIP) introduces several changes to the data underlying the global poverty estimates. This document details these changes and the methodological reasons behind them. The database now includes 16 new country-years, bringing the total number of surveys to nearly 2,400. This update incorporates new methodologies for measuring global poverty and introduces new indicators of shared prosperity: A Prosperity Gap and the number of economies with high income inequality. It also incorporates two new analytical dashboards: growth incidence curves and poverty decompositions. Depending on the availability of recent survey data, global and regional poverty estimates are reported up to 2022. For the first time, PIP also includes country-level, regional, and global poverty nowcast estimates up to 2024. The September 2024 PIP update presents the poverty and inequality data underlying the forthcoming World Bank’s Poverty, Prosperity, and Planet Report 2024.Publication April 2022 Update to the Poverty and Inequality Platform (PIP)(World Bank, Washington, DC, 2022-04)The April 2022 update to the newly launched Poverty and Inequality Platform (PIP) involves several changes to the data underlying the global poverty estimates. Some welfare aggregates have been changed for improved harmonization, and the CPI, national accounts, and population input data have been updated. This document explains these changes in detail and the reasoning behind them. Moreover, a large number of new country-years have been added, bringing the total number of surveys to more than 2,000. These include new harmonized surveys for countries in West Africa, new imputed poverty estimates for Nigeria, and recent 2020 household survey data for several countries. Global poverty estimates are now reported up to 2018 and earlier years have been revised.Publication COVID-19 and Economic Inequality(World Bank, Washington, DC, 2022-01)This paper examines the short-term implications of the COVID-19 pandemic for inequality in developing countries. The analysis takes advantage of high-frequency phone survey data collected by the World Bank to assess the distributional impacts of the pandemic through the channels of job and income losses, food insecurity, and children’s education in the early days of the pandemic and subsequent period of economic recovery leading up to early 2021. It also introduces a methodology for estimating changes in income inequality due to the pandemic by combining data from phone surveys, pre-pandemic household surveys, and macroeconomic projections of sectoral growth rates. The paper finds that the pandemic had dis-equalizing impacts both across and within countries. Even under the assumption of distribution-neutral impacts within countries, the projected income losses are estimated to be higher in the bottom half of the global income distribution. Within countries, disadvantaged groups were more likely to have experienced work and income losses initially and are recovering more slowly. Inequality simulations suggest an increase in the Gini index for 29 of 34 countries in the sample, with an average increase of about 1 percent. Although these short-term impacts on inequality appear to be small, they suggest that projections of global poverty and inequality impacts of COVID-19 under the assumption of distribution-neutral changes within countries are likely to underestimate actual impacts. Finally, the paper argues that the overall inequality impacts of COVID-19 could be larger over the medium-to-long term on account of a slow and uneven recovery in many developing countries, and disparities in learning losses during pandemic-related school closures, which will likely have long-lasting effects on inequality of opportunity and social mobility.Publication September 2023 Update to the Poverty and Inequality Platform (PIP)(World Bank, Washington, DC, 2023-10-11)The September 2023 update to the Poverty and Inequality Platform (PIP) involves several changes to the data underlying the global poverty estimates. In particular, some welfare aggregates have been revised, and the CPI, national accounts, and population input data have been updated. This document explains these changes in detail and the reasoning behind them. Moreover, 63 new country-years have been added, bringing the total number of surveys to more than 2,200. Global poverty estimates are reported up to 2019 and earlier years have been revised. Regional poverty estimates in 2020 and 2021 are reported only for regions with sufficient survey data coverage during the COVID-19 pandemic.Publication The Impact of COVID-19 on Global Inequality and Poverty(World Bank, Washington, DC, 2022-10)The COVID-19 pandemic has had catastrophic economic and human consequences worldwide. This paper tries to quantify the consequences of the pandemic on global inequality and poverty in 2020. Since face-to-face household survey data collection largely came to a halt during the pandemic, a combination of data sources is used to estimate the impacts on poverty and inequality. This includes actual household survey data, where available, high-frequency phone surveys, and country-level estimates from the literature on the impact of the pandemic on poverty and inequality. The results suggest that the world in 2020 witnessed the largest increase to global inequality and poverty since at least 1990. This paper estimates that COVID-19 increased the global Gini index by 0.7 point and global extreme poverty (using a poverty line of $2.15 per day) by 90 million people compared to counterfactual without the pandemic. These findings are primarily driven by country-level shocks to average incomes and an increase in inequality between countries. Changes to inequality within countries were mixed and relatively modest.
Users also downloaded
Showing related downloaded files
Publication World Bank Annual Report 2024(Washington, DC: World Bank, 2024-10-25)This annual report, which covers the period from July 1, 2023, to June 30, 2024, has been prepared by the Executive Directors of both the International Bank for Reconstruction and Development (IBRD) and the International Development Association (IDA)—collectively known as the World Bank—in accordance with the respective bylaws of the two institutions. Ajay Banga, President of the World Bank Group and Chairman of the Board of Executive Directors, has submitted this report, together with the accompanying administrative budgets and audited financial statements, to the Board of Governors.Publication Global Economic Prospects, January 2025(Washington, DC: World Bank, 2025-01-16)Global growth is expected to hold steady at 2.7 percent in 2025-26. However, the global economy appears to be settling at a low growth rate that will be insufficient to foster sustained economic development—with the possibility of further headwinds from heightened policy uncertainty and adverse trade policy shifts, geopolitical tensions, persistent inflation, and climate-related natural disasters. Against this backdrop, emerging market and developing economies are set to enter the second quarter of the twenty-first century with per capita incomes on a trajectory that implies substantially slower catch-up toward advanced-economy living standards than they previously experienced. Without course corrections, most low-income countries are unlikely to graduate to middle-income status by the middle of the century. Policy action at both global and national levels is needed to foster a more favorable external environment, enhance macroeconomic stability, reduce structural constraints, address the effects of climate change, and thus accelerate long-term growth and development.Publication Digital Progress and Trends Report 2023(Washington, DC: World Bank, 2024-03-05)Digitalization is the transformational opportunity of our time. The digital sector has become a powerhouse of innovation, economic growth, and job creation. Value added in the IT services sector grew at 8 percent annually during 2000–22, nearly twice as fast as the global economy. Employment growth in IT services reached 7 percent annually, six times higher than total employment growth. The diffusion and adoption of digital technologies are just as critical as their invention. Digital uptake has accelerated since the COVID-19 pandemic, with 1.5 billion new internet users added from 2018 to 2022. The share of firms investing in digital solutions around the world has more than doubled from 2020 to 2022. Low-income countries, vulnerable populations, and small firms, however, have been falling behind, while transformative digital innovations such as artificial intelligence (AI) have been accelerating in higher-income countries. Although more than 90 percent of the population in high-income countries was online in 2022, only one in four people in low-income countries used the internet, and the speed of their connection was typically only a small fraction of that in wealthier countries. As businesses in technologically advanced countries integrate generative AI into their products and services, less than half of the businesses in many low- and middle-income countries have an internet connection. The growing digital divide is exacerbating the poverty and productivity gaps between richer and poorer economies. The Digital Progress and Trends Report series will track global digitalization progress and highlight policy trends, debates, and implications for low- and middle-income countries. The series adds to the global efforts to study the progress and trends of digitalization in two main ways: · By compiling, curating, and analyzing data from diverse sources to present a comprehensive picture of digitalization in low- and middle-income countries, including in-depth analyses on understudied topics. · By developing insights on policy opportunities, challenges, and debates and reflecting the perspectives of various stakeholders and the World Bank’s operational experiences. This report, the first in the series, aims to inform evidence-based policy making and motivate action among internal and external audiences and stakeholders. The report will bring global attention to high-performing countries that have valuable experience to share as well as to areas where efforts will need to be redoubled.Publication Poverty, Prosperity, and Planet Report 2024(Washington, DC: World Bank, 2024-10-15)The Poverty, Prosperity, and Planet Report 2024 is the latest edition of the series formerly known as Poverty and Shared Prosperity. The report emphasizes that reducing poverty and increasing shared prosperity must be achieved in ways that do not come at unacceptably high costs to the environment. The current “polycrisis”—where the multiple crises of slow economic growth, increased fragility, climate risks, and heightened uncertainty have come together at the same time—makes national development strategies and international cooperation difficult. Offering the first post-Coronavirus (COVID)-19 pandemic assessment of global progress on this interlinked agenda, the report finds that global poverty reduction has resumed but at a pace slower than before the COVID-19 crisis. Nearly 700 million people worldwide live in extreme poverty with less than US$2.15 per person per day. Progress has essentially plateaued amid lower economic growth and the impacts of COVID-19 and other crises. Today, extreme poverty is concentrated mostly in Sub-Saharan Africa and fragile settings. At a higher standard more typical of upper-middle-income countries—US$6.85 per person per day—almost one-half of the world is living in poverty. The report also provides evidence that the number of countries that have high levels of income inequality has declined considerably during the past two decades, but the pace of improvements in shared prosperity has slowed, and that inequality remains high in Latin America and the Caribbean and Sub-Saharan Africa. Worldwide, people’s incomes today would need to increase fivefold on average to reach a minimum prosperity threshold of US$25 per person per day. Where there has been progress in poverty reduction and shared prosperity, there is evidence of an increasing ability of countries to manage natural hazards, but climate risks are significantly higher in the poorest settings. Nearly one in five people globally is at risk of experiencing welfare losses due to an extreme weather event from which they will struggle to recover. The interconnected issues of climate change and poverty call for a united and inclusive effort from the global community. Development cooperation stakeholders—from governments, nongovernmental organizations, and the private sector to communities and citizens acting locally in every corner of the globe—hold pivotal roles in promoting fair and sustainable transitions. By emphasizing strategies that yield multiple benefits and diligently monitoring and addressing trade-offs, we can strive toward a future that is prosperous, equitable, and resilient.Publication Business Ready 2024(Washington, DC: World Bank, 2024-10-03)Business Ready (B-READY) is a new World Bank Group corporate flagship report that evaluates the business and investment climate worldwide. It replaces and improves upon the Doing Business project. B-READY provides a comprehensive data set and description of the factors that strengthen the private sector, not only by advancing the interests of individual firms but also by elevating the interests of workers, consumers, potential new enterprises, and the natural environment. This 2024 report introduces a new analytical framework that benchmarks economies based on three pillars: Regulatory Framework, Public Services, and Operational Efficiency. The analysis centers on 10 topics essential for private sector development that correspond to various stages of the life cycle of a firm. The report also offers insights into three cross-cutting themes that are relevant for modern economies: digital adoption, environmental sustainability, and gender. B-READY draws on a robust data collection process that includes specially tailored expert questionnaires and firm-level surveys. The 2024 report, which covers 50 economies, serves as the first in a series that will expand in geographical coverage and refine its methodology over time, supporting reform advocacy, policy guidance, and further analysis and research.