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10304
From Middle Class to Poverty
e Unequal Impacts of the COVID-19 Pandemic
on Developing Countries
Mariana Viollaz
Daniel Duque
Carolina Diaz-Bonilla
David Newhouse
Michael Weber
Social Protection and Jobs Global Practice &
Poverty and Equity Global Practice
February 2023
Public Disclosure AuthorizedPublic Disclosure AuthorizedPublic Disclosure AuthorizedPublic Disclosure Authorized
From Middle Class to Poverty:
The Unequal Impacts of the COVID-19 Pandemic on Developing
Countries
Mariana Viollaz
a
Daniel Duque
b
Carolina Diaz-Bonilla
c
David Newhouse
c
Michael Weber
c
JEL codes: C36, D31, O20
Keywords: Microsimulation, economics shocks, distributional impact
a
CEDLAS-FCE-UNLP
b
Norwegian School of Economics
c
World Bank Group
2
1. Introduction
The COVID-19 pandemic and the associated containment measures led to dramatic declines in
economic activity levels and disrupted labor markets worldwide, with potentially large
distributional impacts. Empirical evidence from developed and developing countries is showing
that traditionally disadvantaged workers --women, young, and low-educated workers—were hit
hardest by the pandemic and, as a consequence, the patterns of existing inequalities are being
exacerbated (Adams-Prassl et al., 2020; Fairlie et al., 2020; Lee et al., 2021; Kugler et al., 2021).
Workers in developing countries are often self-employed or working in informal arrangements
with a relatively low earnings level. The containment measures particularly affect these groups of
workers, leading to decreasing incomes and higher chances of falling into poverty. To design
effective policies to protect the most vulnerable segments of the population, the distributional
impacts of the pandemic need to be known. In the longer term, the calculations of prompt estimates
on how individuals and households are affected during any crisis are crucial inputs for timely
policy responses.
During the COVID-19 pandemic, different sources of data and methodological approaches have
been used to estimate the distributional impacts of the crisis. In particular, phone surveys gained
momentum during the pandemic as an instrument to gather information on the ground while
respecting social distancing and lockdown policies. Phone surveys successfully collected
information on respondents’ employment status and their perception of whether their household
income declined, remained the same, or increased (Khamis et al., 2021; Kugler et al., 2021). A
quite different approach to estimate the distributional impacts is through Computable General
Equilibrium models using different scenarios of GDP reduction and transmission mechanisms,
such as in the ILO (2020) and Vos et al. (2020) studies. In addition, some studies adjust pre-
pandemic poverty lines using different scenarios of per capita income or consumption contraction
or, alternatively, actual information on per capita GDP reduction (Sumner et al., 2020; Diop and
Asongu, 2020). But these methodologies make strong distributional or structural assumptions,
which lead the results to be sensitive to the choice of methodology.
2
In this study we follow a different approach, which applies a macro-micro simulation that
combines pre-COVID-19 household surveys microdata with 2020 data on sectoral employment
levels, sectoral GDP, private consumption, and remittances. With this information, we simulate
the transmission of the COVID-19 shock via three channels – job loss, labor income declines, and
changes in remittances— on household per capita income (or consumption) and the shares of poor,
vulnerable, and middle-class populations in each country during 2020. We present projections for
2
For example, ILO (2020) projects that, using the 3.2 USD-a-day poverty line, the number of poor workers in 2020
will increase between 8.8 million and 35 million persons in 138 low- and middle-income countries compared to pre-
COVID-19 estimates. Sumner et al. (2020) project short-term increases in poverty of between 85 million and 580
million persons with respect to 2018 values for more than 150 countries using different poverty lines. Vos et al. (2020)
predict an increase of between 12 million and 22 million in the number of extreme poor people (1.9 USD-a-day poverty
line) in 30 countries of mainly Sub-Saharan Africa and South Asia in 2020. For 50 African countries, Diop and Asongu
(2020) show increases of between 19 million and 26 million additional poor people in 2020 using different poverty
lines.
3
five developing countries during 2020 –Brazil, Sri Lanka, the Philippines, South Africa, and
Türkiye.
The objectives are threefold. The first is to understand the extent to which employment projections
based on GDP elasticities may be biased during a crisis. Changes in employment levels are a key
input into these macro-micro models. When employment data is not available, projections of job
gains or losses are needed, and these are often based on employment-to-GDP elasticities. The
second objective is to better understand the projected distributional impacts of the economic shock
during the first year of the pandemic in five countries from different regions of the world. Finally,
the third objective is to better understand in Brazil, where post-crisis data on shock magnitudes
exist, the extent to which the proposed methodology generates accurate estimates of the
distributional impacts of the shock.
The combination of pre-COVID-19 microdata with National Accounts data from 2020 to estimate
2020 poverty rates is similar to other studies (ECLAC, 2020; Brum and De Rosa, 2021; World
Bank, 2021). The methodology used here differs from these studies in two respects. First, we use
a different procedure than in ECLAC (2020) and Brum and De Rosa (2021) to simulate changes
in individual and household labor incomes. In particular, similar to World Bank (2021), we predict
an individual probability of becoming unemployed, as a function of both sector of employment
and formality status.
3
Second, we differ in the consideration of government transfers and work
from home possibilities. Unlike several other studies, our study does not include changes in
government transfers in the simulation of household income changes, due to lack of information
across all the countries under study here and thus to maintain comparability.
4
As such, it predicts
total income changes, poverty rates, and shares of vulnerable and middle-class populations that
can be attributed to job losses, labor income changes, and changes in remittances.
We proceed by, first, presenting an in-depth analysis of employment elasticity projections for 15
developing countries selected based on the availability of post-crisis employment data from Labor
Force Surveys or other official sources. The sample includes 5 countries from the Europe and
Central Asia region, 6 from Latin America and the Caribbean, 3 from East Asia and Pacific, and
one from Sub-Saharan Africa. When no employment data is available, employment elasticities are
a crucial input to project employment changes and simulate the distributional impact of a shock.
However, these estimates may provide biased inputs during a crisis period and, especially, during
the recent pandemic when large drops in GDP were observed. Employment projections based on
elasticities may overestimate the employment loss, for instance, because most countries have
implemented crisis-relief measures such as cash transfers and wage subsidies that may have
protected employment but not been reflected in GDP growth. We therefore use pre-COVID-19
data on GDP and employment levels to perform a sensitivity analysis using different model
specifications. The projected employment levels are then compared with observed 2020 values.
The differences or biases between actual and projected employment levels are correlated with the
3
For example, some studies do not distinguish the job loss channel by sector of activity (Brum and De Rosa, 2021)
or assign the probability of losing a job exogenously (ECLAC, 2020). The former, however, consider amenability of
working from home when predicting job loss.
4
Brum and Da Rosa (2021), World Bank (2021), and ECLAC (2020) include government transfers in the simulation
of household income changes.
4
stringency of the social distancing measure, a mobility measure, and a measure of scale-up of cash
transfer programs at the country level to understand what is behind the lack of precision in some
of the specifications.
Second, we apply a macro-micro simulation methodology in five countries that combines pre-
COVID-19 household surveys with national accounts data for 2020. The methodology follows the
household income generation model proposed by Bourguignon and Ferreira (2005), and instead of
using a CGE model or macro projections to go from macro changes to micro impacts, we use
actual 2020 data on employment level, sectoral GDP, private consumption, and remittances. The
results of the simulation are used to project changes in household per capita income or
consumption by quintiles between 2019 and 2020, changes in poverty rates at different lines, and
changes in the shares of the vulnerable population and middle class.
Third, we compare the changes in poverty, vulnerable population, and middle class obtained using
actual 2020 employment data in the macro-micro simulation methodology versus using
employment projections based on the calculation of employment elasticities.
Finally, we validate our estimations for Brazil using 2019 and 2020 microdata from the PNAD-
Contínua. Using this survey, we calculate actual poverty rates and poverty rates excluding incomes
from emergency assistance programs implemented since the pandemic started. This allows us to
isolate the poverty changes that are explained by the job loss, labor income, and remittance
channels.
Our results can be summarized as follows:
(i) In most countries, employment estimates for 2020 based on elasticities were reasonably
accurate. The projected levels of employment are within 5 percent of the actual levels
in 11 of the 15 countries. However, in four countries the projections significantly
overestimated employment levels and therefore underestimated job loss due to the
crisis. This bias tends to be larger (i) for labor markets that were more disrupted by the
pandemic as measured by the stringency of social distancing measures, changes in
workplace mobility, and a measure of scale-up of cash transfer programs, and (ii) in the
agriculture sector in comparison to the industry and service sectors.
(ii) The simulations show declines in the per capita household income or consumption
across the entire distribution. However, the impacts across the distribution varied across
countries, with no clear pattern. In Sri Lanka and Brazil, for example, the simulations
project larger shocks for poorer households. In Türkiye, the changes are similar across
income groups. In the Philippines, the simulated reductions were largest for households
in the middle three quintiles, while in South Africa, the simulated reductions were
largest for the top three quintiles. When using employment projections based on
elasticities instead of actual employment data, the projected income declines were
smaller in all countries and quintiles.
(iii) Actual 2020 micro data for Brazil shows that the simulations underestimated the
magnitude of the shock throughout the distribution, especially for the wealthy, because
they underestimated the earnings declines, and thus underestimated the increase in
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