Claim analyzed

General

“In 2021, North Korea had the highest prevalence of modern slavery in the world.”

Submitted by Brave Badger c743

True
9/10
Created: May 11, 2026
Updated: July 12, 2026

The best-supported 2021 estimates place North Korea at the top of the world for modern-slavery prevalence. Walk Free's Global Slavery Index 2023 explicitly uses 2021 as its reference year and ranks North Korea first, and major news coverage accurately reflects that result. The main caveat is that the estimate is model-based because direct data from North Korea are limited.

Caveats

  • This ranking is an estimate from a modeled index, not a direct headcount measured inside North Korea.
  • Some tertiary or social-media sources repeat the claim without methodology; the strongest support comes from Walk Free's underlying report and data tables.
  • The claim is about prevalence in 2021, not about total number of people in modern slavery or conditions in later years.

Sources

Sources used in the analysis

#1
Walk Free 2023-05-24 | Global Slavery Index

Walk Free’s Global Slavery Index 2023 says North Korea had the highest prevalence of modern slavery in the world, at 104.6 people per 1,000 population. The report also states that an estimated 50 million people were living in modern slavery in 2021, up from 40 million in 2016.

#2
NK News 2023-05-24 | 1 in 10 North Koreans faces modern slavery, highest prevalence in world: Report

North Korea has the highest prevalence of modern slavery of any country, with forced labor, human trafficking and other activities impinging on individual freedom, according to the Global Slavery Index.

#3
Al Jazeera 2023-05-24 | Modern slavery most common in North Korea, Eritrea, report says

By this benchmark, reclusive and authoritarian North Korea has the highest prevalence of modern slavery (104.6 per 1,000 population), according to the Global Slavery Index 2023. Eritrea follows with 90.3 per 1,000, and Mauritania ranks third with 32 per 1,000.

#4
Daily NK 2023-05-24 | Global Slavery Index 2023: N. Korea has the globe's highest prevalence of modern slavery

North Korea has the highest prevalence of modern slavery in the world, according to the Global Slavery Index 2023, compiled by the Australian human rights organization Walk Free and published on May 24.

#5
Walk Free 2023-05-17 | THE GLOBAL SLAVERY INDEX 2023

The Global Slavery Index 2023 estimates that "An estimated 50 million people were living in modern slavery on any given day in 2021." It further states: "The 10 countries with the highest prevalence of modern slavery in 2021 are North Korea, Eritrea, Mauritania, Saudi Arabia, Türkiye, Tajikistan, the United Arab Emirates, Russia, Afghanistan, and Kuwait." In supporting data tables, North Korea is listed with an estimated prevalence of 104.6 people in modern slavery per 1,000 population and an estimated 2,696,000 people in modern slavery, based on 2021 data.

#6
Walk Free 2023-05-17 | Methodology behind the Global Slavery Index

In the methodological annex for the Global Slavery Index, Walk Free provides Table 2: "Estimated prevalence and number of people in modern slavery, by country." In this table, North Korea is shown with an "Estimated prevalence of modern slavery (per 1,000 population)" of 104.6, an "Estimated number of people in modern slavery" of 2,696,000, and a population of 25,779,000. These figures are described as estimates of modern slavery prevalence for 2021.

#7
Walk Free 2023-05-17 | Global findings on modern slavery - Global Slavery Index 2023

Walk Free’s global findings page notes that "The 10 countries with the highest prevalence of modern slavery are: 1. North Korea 2. Eritrea 3. Mauritania 4. Saudi Arabia 5. Türkiye 6. Tajikistan 7. United Arab Emirates 8. Russia 9. Afghanistan 10. Kuwait." The page further explains: "In North Korea, one in 10 people are in modern slavery, with the vast majority being forced to work by the state." It also reiterates that North Korea and Eritrea have a high prevalence of state‑imposed forced labour and that North Korea remains in the list of countries with the highest prevalence in the 2023 Index based on 2021 data.

#8
Walk Free 2023-09-27 | Modern slavery in North Korea - Walk Free (GSI Snapshot North Korea 2023)

According to the 2023 Global Slavery Index, an estimated 104.6 in every thousand people were in modern slavery in North Korea at any point in 2021. In other words, 2,696,000 people experienced forced labour or forced marriage in North Korea in 2021. In terms of prevalence of modern slavery, North Korea ranks 1st globally and 1st within Asia and the Pacific.

#9
Walk Free / Hampshire PCC (rehosted PDF) 2023-05-24 | THE GLOBAL SLAVERY INDEX 2023

The Global Slavery Index 2023 uses 2021 as its reference year, stating: "The 10 countries with the highest prevalence of modern slavery in 2021 are North Korea, Eritrea, Mauritania, Saudi Arabia, Türkiye, Tajikistan, the United Arab Emirates, Russia, Afghanistan, and Kuwait." It presents a ranking table where **North Korea is listed as number 1**, followed by Eritrea and Mauritania, explicitly identifying North Korea as the country with the highest prevalence of modern slavery in 2021 among all countries assessed.

#10
Reuters 2023-05-24 | Modern slavery most common in North Korea, Eritrea, report says

North Korea, Eritrea and Mauritania have the highest prevalence of modern slavery in the world, according to the 2023 Global Slavery Index published Wednesday, which noted a worsening situation globally since its last survey five years earlier.

#11
DW 2023-05-24 | 50 million people trapped in 'modern slavery' — report

Reporting on the Global Slavery Index 2023, DW states: "An estimated 50 million people were 'living in situations of modern slavery' in 2021, according to the Global Slavery Index released by the human rights organization Walk Free." The article adds: "North Korea (104.6 people per 1,000 population), Eritrea (90.3), and Mauritania (32) have the highest number of modern slavery victims, the report said," indicating North Korea has the highest prevalence figure among countries assessed.

#12
International Labour Organization (ILO) 2022-09-12 | Global Estimates of Modern Slavery: Forced Labour and Forced Marriage

The joint ILO, Walk Free, and IOM report on global estimates explains that its figures are for the year 2021: "The latest Global Estimates indicate that 50 million people were living in modern slavery in 2021. Of these people, 28 million were in forced labour and 22 million were trapped in forced marriage." While this document provides global totals and not country rankings, it forms the statistical basis for the Global Slavery Index country prevalence estimates that rank North Korea first for 2021.

#13
International Organization for Migration (IOM) 2022-09-12 | Global Estimates of Modern Slavery: Forced Labour and Forced Marriage

The IOM publication, produced with ILO and Walk Free, states: "The 2021 Global Estimates indicate there are 50 million people in situations of modern slavery on any given day, either forced to work against their will or in forced marriage." It clarifies that these estimates refer to 2021 and are used as input data for later analyses, including the Global Slavery Index that identifies the countries with the highest prevalence, where North Korea is ranked first.

#14
Channels Forum (Facebook repost of news article) 2023-05-24 | North Korea, Eritrea and Mauritania have the highest prevalence of modern slavery in the world

North Korea, Eritrea and Mauritania have the highest prevalence of modern slavery in the world, according to the 2023 Global Slavery Index published Wednesday, which noted a “worsening” situation globally since its last survey five years earlier. The study said an estimated 50 million people were "living in situations of modern slavery" in 2021, an increase of 10 million over 2016.

#15
Walk Free 2023-05-17 | Global Slavery Index 2023 data maps

Walk Free’s data maps file for the Global Slavery Index 2023 provides a ranked list under the heading "Rank Country. Prevalence." North Korea appears at rank 1 with a prevalence value of 104.6, followed by Eritrea at 90.3 and Mauritania at 32.0. This table represents the estimated prevalence of modern slavery per 1,000 population using 2021 data for the Index.

#16
YouTube (news clip) 2023-05-24 | ‘Modern slavery’ most common in North Korea and Eritrea

The report said an estimated 50 million people were "living in situations of modern slavery" in 2021, an increase of 10 million over 2016, when the problem was last measured. North Korea, Eritrea and Mauritania have the highest prevalence of modern slavery in the world according to the 2023 Global Slavery Index published Wednesday.

#17
Statista 2023-05-24 | Chart: The Hotspots of Modern Slavery

Approximately 10.5 percent of North Korea's population, including migrant workers and human trafficking victims, are categorized as modern slaves, according to data by the Walk Free Foundation. Our chart shows that only one other country comes close to this population share size. With 9.0 percent or an estimated number of 320,000 modern slaves, the African country of Eritrea comes in second on the ranking analyzing data from 2021.

#18
Statista 2023-06-01 | Chart: Countries With the Highest Prevalence of Slavery

Statista’s chart, citing Walk Free’s Global Slavery Index 2023, reports: "An estimated 50 million people were living in modern slavery as of 2021, according to the Walk Free's flagship report Global Slavery Index 2023." It specifies that "North Korea is the country with the highest rate of people experiencing modern slavery in 2023, with as many as 104 people living under these conditions out of every 1,000 inhabitants" and notes that these Global Slavery Index 2023 prevalence rates are derived from 2021 data.

#19
RESPECT 2023-06-01 | Pervasive, punitive and predetermined: Understanding modern slavery in North Korea

It has long been known, though difficult to verify, that citizens of North Korea are forced to work by the State on a far greater scale than seen elsewhere in the world. Recent estimates reveal that 1 in 10 North Koreans are living in modern slavery with the vast majority being forced to work by the state. These estimates are based on the Global Slavery Index and related research on forced labour and other forms of modern slavery inside North Korea.

#20
World Population Review 2023-05-24 | Global Slavery Index by Country 2026

The country with the highest slavery prevalence score as of 2023 was North Korea, which had an estimated 104.60 people out of 100,000 under modern slavery conditions.

#21
Facebook (VGraphs) 2024-02-20 | Countries with the Highest Modern Slavery Rates.

A visual summary shared on social media referencing Walk Free states: "#North_Korea, #Eritrea and #Mauritania have the highest prevalence of modern #slavery in the #world, according to the 2023 Global Slavery Index." This reflects the Global Slavery Index 2023 country ranking, in which North Korea is placed first for prevalence based on 2021 data, ahead of Eritrea and Mauritania.

#22
Statista (via Facebook) 2021-12-02 | Today is the International Day for the Abolition of Slavery. Did you know...

In a post for the International Day for the Abolition of Slavery, Statista notes: "Did you know that approximately 10.5 percent of North Korea's population are categorized as modern slaves by the Walk Free Foundation?" This figure corresponds to Walk Free’s estimate that around one in ten people in North Korea are in modern slavery, consistent with the Global Slavery Index’s prevalence estimates for the country.

#23
RightsDD 2024-03-15 | Guide to identifying and addressing North Korean modern slavery risk in China

While much attention has been paid to forced labour in China’s Xinjiang region, the country’s northeastern provinces of Jilin and Liaoning also carry a high risk of modern slavery. Indeed, Reuters has estimated the number of North Korean victims at 20,000-100,000. These victims include North Korean workers who are trafficked or otherwise forced to work in conditions that meet the definition of modern slavery.

#24
Walk Free 2023-05-24 | World | The Global Slavery Index - Walk Free

The interactive Global Slavery Index map explains: "An estimated 50 million people were living in modern slavery on any given day in 2021. This is nearly one in every 150 people in the world." Users can view country rankings by prevalence; in the prevalence ranking list, North Korea appears at the top position, indicating that it has the highest estimated prevalence of modern slavery among all countries for the 2021 reference year.

#25
AIM-Progress 2019-06-12 | The Global Slavery Index

The 2018 Global Slavery Index provides a country by country ranking of the number of people in modern slavery (169 countries), as well as an analysis of the actions governments are taking to respond. In 2018, the Index also includes an analysis of state-imposed forced labour in North Korea.

#26
Wikipedia Slavery in the 21st century

The Wikipedia article on slavery in the 21st century, referencing Walk Free’s Global Slavery Index, notes that the Index in 2021 "estimated that there were about 49.6 million slaves around the world" and discusses which countries take the least action against modern slavery, listing North Korea among them. Although the article focuses more on 2018 estimates and global numbers, it contextualises modern slavery measurement and indicates that North Korea is consistently identified as a country with very high levels of modern slavery and poor government response.

Full Analysis

Debate

Two AI advocates debated this claim using the research gathered.

Argument for

P
Proponent Argues TRUE

The Global Slavery Index 2023, published by Walk Free (Source 5, Source 8), explicitly uses 2021 as its reference year and ranks North Korea first globally with an estimated prevalence of 104.6 people per 1,000 population — nearly double that of second-ranked Eritrea at 90.3 — confirming that in 2021, North Korea had the highest prevalence of modern slavery in the world. This finding is corroborated by multiple highly authoritative and independent sources including the ILO and IOM (Sources 12, 13), as well as major news outlets such as Al Jazeera, Reuters, and DW (Sources 3, 10, 11), all consistently reporting North Korea's top ranking based on 2021 data.

O
Opponent Rebuttal

The Proponent commits a fallacy of division by claiming the International Labour Organization and International Organization for Migration corroborate North Korea's top ranking, when Source 12 and Source 13 explicitly state their joint publications only provide global totals and not country-specific rankings. Consequently, the Proponent's argument relies on a circular echo chamber of media outlets in Source 3, Source 10, and Source 11 that merely repeat the unverified, speculative estimates of a single organization, Walk Free.

Argument against

O
Opponent Argues FALSE

The claim that North Korea had the highest prevalence of modern slavery in 2021 relies on data that is fundamentally difficult to verify due to the country's highly reclusive nature, as acknowledged in Source 19. Furthermore, these figures are not definitive facts but rather external estimates compiled by a single organization, Walk Free, making the absolute ranking of North Korea highly speculative, as shown in Source 5 and Source 6.

P
Proponent Rebuttal

The Opponent's argument commits the fallacy of dismissing evidence by demanding an impossible standard of verification — North Korea's opacity does not invalidate the estimates, but rather explains why Walk Free, the ILO, and the IOM (Sources 5, 12, 13) rely on rigorous methodological frameworks explicitly designed to account for data-scarce environments, as detailed in Source 6. Furthermore, the Opponent's characterization of Walk Free as a 'single organization' misrepresents the evidentiary record: the Global Slavery Index 2023 rankings are corroborated by the ILO and IOM (Sources 12, 13) and independently reported by Al Jazeera, Reuters, and DW (Sources 3, 10, 11), demonstrating broad institutional consensus — not speculative unilateral estimation — that North Korea ranked first in modern slavery prevalence in 2021.


Panel Review

3 specialized AI experts evaluated the evidence and arguments.

Reviewer 1 — The Logic Examiner

Focus: Inferential Soundness & Fallacies
True
10/10

The logical chain from the evidence to the claim is sound, as multiple sources (Sources 5, 6, 8, and 9) confirm that the 2023 Global Slavery Index uses 2021 as its reference year and explicitly ranks North Korea first globally in modern slavery prevalence. The Opponent's counterarguments fail to logically invalidate these findings, as the underlying methodology is co-developed with major international bodies (Sources 12 and 13) to estimate prevalence in data-scarce environments.

Confidence: 10/10

Reviewer 2 — The Source Auditor

Focus: Source Reliability & Independence
True
9/10

The most reliable, primary evidence is Walk Free's Global Slavery Index 2023 and its supporting tables/methodology (Sources 1, 5, 6, 7, 8, 15, 24), which explicitly use 2021 as the reference year and rank North Korea #1 globally for estimated modern-slavery prevalence (104.6 per 1,000), with Reuters and other major outlets (Source 10; also 3 and 11) accurately reporting that ranking from the report. Because the claim is about what the best-available, widely cited 2021 prevalence estimates conclude (not about certainty of measurement inside North Korea), trustworthy sources clearly support that North Korea was ranked highest for 2021, so the claim is true as stated.

Weakest sources

Source 14 (Channels Forum Facebook repost) is unreliable because it is a social-media repost with no demonstrated original reporting or verification beyond repeating other coverage.Source 16 (YouTube news clip) is unreliable as a standalone citation because it is a secondary broadcast excerpt that typically summarizes other reporting without providing primary documentation.Source 20 (World Population Review) is unreliable because it contains an apparent unit error (stating 104.60 per 100,000 rather than per 1,000) and is a tertiary compilation site.Source 21 (Facebook VGraphs) is unreliable because it is a social-media graphic that does not provide primary data or methodology.Source 26 (Wikipedia) is unreliable for adjudication because it is an editable tertiary summary and is not a primary or professionally curated source.
Confidence: 8/10

Reviewer 3 — The Precision Analyst

Focus: Claim Precision & Quantitative Accuracy
True
9/10

The claim states that 'In 2021, North Korea had the highest prevalence of modern slavery in the world.' The Global Slavery Index 2023 (Sources 5, 6, 7, 8, 9, 15) explicitly uses 2021 as its reference year and ranks North Korea first globally with a prevalence of 104.6 per 1,000 population, nearly double second-ranked Eritrea at 90.3. Multiple authoritative sources including Walk Free's own methodology documentation, ILO/IOM joint reports providing the statistical basis, and major news outlets all consistently confirm this ranking for 2021 data. The opponent's point that ILO/IOM only provide global totals (not country rankings) is technically accurate per Sources 12 and 13, but those sources explicitly state their estimates form the statistical basis for the GSI country rankings — they do not contradict North Korea's top ranking. The claim's wording ('highest prevalence') matches exactly what the evidence supports: North Korea ranked #1 in the GSI 2023 based on 2021 data. The only precision nuance is that these are estimates (inherently uncertain given North Korea's opacity), but the claim does not assert certainty beyond what the index claims, and the index itself presents these as estimates. The year 2021 is correctly specified as the reference year for the GSI 2023 data.

Precision issues

The figures are estimates based on modeling in a data-scarce environment, so the claim's unqualified phrasing slightly overstates the certainty of the ranking, though this is a minor issue given that the GSI itself presents North Korea as definitively ranked first among all assessed countries.
Confidence: 9/10

Panel summary

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The claim is
True
9/10
Confidence: 9/10 Spread: 1 pts

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True · Lenz Score 9/10 Lenz
“In 2021, North Korea had the highest prevalence of modern slavery in the world.”
26 sources · 3-panel audit · Verified May 2026
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