By Fiona Robertson, Hui Yin Chuah, Abdullah Mohammadi, and Jennifer Vallentine

  Migration within and towards Southeast Asia is a dynamic, mixed and enduring phenomenon influenced by historical, socio-cultural, economic, and geopolitical factors. From the Mekong region to movements between Indonesia and Malaysia, these migration practices are rooted in the region’s history and continue to evolve today.11 Significant events such as the large-scale displacement during the 1950s–70s Vietnam War, persistent systemic persecution of Rohingya, and the recent conflicts in Myanmar have accentuated the complexity of mixed migration in the region. Uneven economic development across Southeast Asia has further fuelled migration, attracting workers from lower-income countries to larger economies that offer greater opportunities. Additionally, climate change and environmental disasters have increasingly influenced migration patterns in the region.22 Combined, these factors contribute to both regular and irregular migration patterns, with porous borders and limited access to regular pathways exacerbating the prevalence of irregular migration. Bangladesh, one of world’s largest migrant sending countries, accounting for 7.4 million migrants living abroad as of 20203 and host to 989,585 Rohingya refugees as of July 2024, faces economic pressures and protracted displacement that drive many individuals towards irregular migration. The route from Bangladesh to Malaysia, particularly via boat across the Bay of Bengal, is a prominent irregular migration pathway. Similarly, Indonesia is a major migrant-sending country, especially of migrant workers, with 4.6 million migrants globally as of 2020.5 The Indonesia-Malaysia migration corridor, which 55 per cent of Indonesian migrants travelled in 2017, is characterised by a high degree of irregularity, with nearly half lacking legal status.6 Malaysia and Thailand, known for their relative economic and political stability, comparatively welldeveloped economies and established diaspora communities, are key destination countries in Southeast Asia. However, they face distinct challenges related to irregular migration. Economic opportunities, especially in low-skilled sectors, attract migrants from neighbouring countries across porous borders, making both countries host to large populations of migrants in irregular situations. As of 2017, the World Bank estimated that Malaysia hosts approximately 1.23–1.46 million migrant workers who are in irregular situations, predominantly from Bangladesh and Indonesia.7 Malaysia also hosts 190,370 registered refugees and asylum seekers, 88 percent of whom are from Myanmar.8 Thailand, which hosts 4.9 million migrants, serves as a primary destination for migrant workers from neighbouring Southeast Asian countries and a transit and destination point for asylum seekers and refugees.9 As of 2018, Thailand hosted approximately 811,437 migrant workers in irregular situations from Cambodia, Lao People’s Democratic Republic (Lao PDR), Myanmar, and Viet Nam,10 in addition to 86,539 refugees, including about 5,500 urban refugees, as of November 2024.11 Both Malaysia and Thailand are central to understanding the dynamics of irregular migration and the effectiveness of policies aimed at promoting safe and regular migration pathways. However, while there are estimates of the number of migrants in irregular situations across Southeast Asia, the often-covert nature of irregular migration makes accurate and timely estimations of its scale challenging. Despite their significant presence and contributions to the labour force and host societies, migrants in irregular situations face precarious conditions, including the constant threat of arrests, detention, and deportation due to their irregular status, as well as lack of access to education, healthcare, formal livelihoods, and sustainable housing. Additionally, those taking irregular pathways often encounter various protection risks along their journeys, including extortion, sexual and physical abuse, and trafficking in persons. Addressing the issue of irregular migration requires a multifaceted approach that recognises the diverse backgrounds and experiences of people on the move and addressing the motivations and drivers that compel individuals to undertake irregular journeys. A common narrative suggests that the lack of information about regular and safe migration pathways is a significant driver of irregular migration.12 This information gap, coupled with the lack of awareness of the risks associated with irregular journeys and limited accessible regular pathways, often compel many individuals to opt for irregular routes.13 In response, policy and programming initiatives have increasingly turned to information-dissemination and awareness-raising campaigns to mitigate irregular migration, as well as people smuggling and trafficking in persons. For example, between 2015 and 2019, European Union (EU) member states invested more than 23 million euros in 104 information and awarenessraising campaigns with the aim of reducing irregular migration towards Europe.14 In Bangladesh, the EU contributed 15.9 million euros to the five-year Prottasha project and a further 20 million euros in 2023 to Prottasha II15 which aims to promote sustainable reintegration and safe migration. The project includes awareness-raising about safe migration and the risks of migrating through irregular channels as a key component.16 In 2023, the Association of Southeast Asian Nations (ASEAN) and the EU launched a series of audio-visual products as part of the ASEAN Safe and Fair Migration Campaign, aimed at better protection of migrant workers in Southeast Asia.17 In fact, the focus on information dissemination is not new; it was highlighted as one of the key strategies in a 2012 United Nations (UN) background paper on good practices in preventing people smuggling.18 However, despite the increase in policies and programming surrounding information dissemination on migration, there remains a challenge in assessing their effectiveness in preventing and reducing the risks associated with irregular migration. Under the mandate of the Bali Process on People Smuggling, Trafficking in Persons and Related Transnational Crime (Bali Process), the 2023 Adelaide Strategy for Cooperation (the Strategy) recognises ‘Irregular Migration’ and ‘Public Information Campaigns’ as two key cooperation areas across the Bali Process structure. The Strategy welcomes initiatives that build the preparedness of Bali Process Member States to respond to irregular migration and calls for support to ‘members to develop and implement effective public information campaigns, raise public awareness and promote digital literacy, including among youth, to reduce irregular migration and promote safe and legal migration’.19 As key origin, transit, and destination points across the Bali Process region, the four selected Bali Process Member States—Bangladesh, Indonesia, Malaysia and Thailand—provide valuable contextual insights for the purpose of this assessment. Against this background, this assessment aims to provide evidence-based insights and actionable policy recommendations on the information needs and perceptions surrounding irregular migration in key Bali Process Member States in South and Southeast Asia. It will identify the nuanced information needs of people on the move, assess their perceptions and motivations, and evaluate the role of information in migration decision-making, facilitating the design of information campaigns targeted at changing behaviours of persons at risk of irregular migration. Additionally, the assessment will examine interventions designed to bridge information gaps behind irregular migration.   

Bangkok:  Regional Support Office of the Bali Process ; Geneva: Mixed Migration Centre, 2025. 67p.

By Bali Process RSO and MMC

Highlights

85% of respondents did not consider regular migration, primarily because regular pathways were not accessible to them.

The Rohingya face specific problems: their statelessness effectively bar them from regular pathways. 92% of Rohingya respondents—the highest among all respondents— reported that they did not consider regular migration pathways. 91% reported encountering protection incidents, compared to 47% of other Myanmar ethnic groups.

Overall, a notable portion of respondents indicated that they did not actively seek information before migrating. A higher proportion of women (41%) reported not actively seeking any information before migration, compared to men (29%).

Despite the presence of various formal awareness programs, only 4% of respondents received information from a formal programme before their journey. There appears to be a large disconnect between formal information channels and the informal networks that refugees and migrants actually rely on for advice.

Decision-Making Patterns: Awareness of risks doesn’t always deter irregular migration—98% of Indonesian respondents would still choose the same pathway, even though 45% recognize its negative aspects.

Bangkok, Regional Support Office of the Bali Process : Geneva, Mixed Migration Centre, 2025. 67p.

By Katerina Glyniadaki, Nora Ratzmann, Julia Stier

International organizations and foreign-funded NGOs run campaigns in Senegal to raise awareness of the perils of irregular migration. To increase their effectiveness, these organizations often enlist local migrant returnees to share their personal migration experiences and transmit an anti-irregular migration message to their compatriots. This article examines whether policymakers' assumptions regarding the representativeness of migrant returnees operating as (anti-)migration messengers in terms of shared identities corresponds to reality at the street level. It draws from theories of street-level bureaucracy and representative bureaucracy and is based on 31 qualitative interviews with migrant returnees and experts. The study shows that migrant returnees engaged in migration information campaigns are not as representative of the local population as envisaged by policymakers, potentially impacting policy outcomes. They stand out from their compatriots in terms of skillsets and social status – partly because of the selection mechanism employed by organizations and partly because of the training and capacity-building efforts directed at migrant returnees.

International Migration. 2025;63:e13382.

By Jasmijn Slootjes and Ravenna Sohst

Across Europe, concerns about irregular migration have dominated media headlines and shaped recent elections. Discussions of and policymaking related to irregular migration are often a numbers game, fueled by the latest estimates of changing migration trends and migrant populations. Data on irregular migration also influence decision-making, advocacy, and strategic and operational planning of a wide range of governmental and nongovernmental actors.

But despite playing such important roles, data on irregular migration are often inadequate—either lacking altogether, uneven, or difficult to access. This has consequences for policymakers, service providers, and other stakeholders that would benefit from better access to reliable data.

This MPI Europe policy brief explores obstacles that hinder the effective collection and use of irregular migration data, how this affects policymakers and other actors, and potential avenues for strengthening the evidence base. This study, which is part of the Measuring Irregular Migration and Related Policies (MIrreM) project, draws on insights shared in workshops and interviews by policymakers, subject matter experts, NGO representatives, and other stakeholders.

Brussels: Migration Policy Institute - Europe, 2024. 18p.

By Kevin Fredy Hinterberger

Combatting’ irregular migration is one of the key challenges to migration management at EU level. The present book addresses one of the most pressing structural problems regarding the EU’s return policy: the low return rate of irregularly staying migrants. In this regard the EU Return Directive obliges Member States to issue a return decision, yet only 40% of such decisions are enforced annually. Moreover, despite the political and legal efforts, the EU is not making any significant progress in enforcing the rules it has laid down in the Return Directive. The legislation of EU Member States may, however, serve as a source for possible solutions to ‘combat’ the problem of irregularly staying migrants. This is why the book compares the system of regularisations in Austria, Germany and Spain. Regularisations constitute an effective alternative to returns because they terminate the irregular residence of migrants, not through deportation, but rather by granting a right of residence. Regularisation is therefore understood as each legal decision that awards legal residency to irregularly staying migrants. As is shown by the examination and comparison of regularisations in Austria, Germany and Spain, differentiated systems of regularisation exist at national level. However, EU regularisations supplementing the present return policy would be more effective at ‘combatting’ irregular migration at EU level.

London: New York: Nomos/Hart, 398p

By: Reinhard Schweitzer

This open access book provides an analysis of the functioning, consequences and inherent limitations of internalised immigration control. By adopting the perspective of irregular residents as well as local service providers, the book sheds new light on the intricate mechanisms that either help or hinder the diffusion of immigration control into concrete institutional settings, like schools or hospitals. A simple and innovative analytical framework enables the systematic comparison of three different spheres of service provision across two distinct local as well as also national contexts. This is necessary to understand the complex interplay between formal law and policy, the intrinsic rules and logics operating within institutions, and the ethical or practical obligations and constraints attached to particular roles and professions. Based on empirical findings and rigorous analysis, the book argues that internalised control is part of the problem that irregular migration poses for society, rather than constituting a potential solution to it.

Cham: Springer Nature, 2023. 154p.