Migration is not a new phenomenon; but an inevitable part of socioeconomic transformation globally for every individual. It can be driven by economic reasons or fleeing tragic situations such as conflict, persecution, natural disasters, and others migrating for family regrouping and studying (1). In general, the migrant population engaged in the labour market that contributes essential labour and skills to host countries for economic growth and their home countries' economies by sending remittances and developing new skills to utilize when they return (2). They are commonly employed in low-skilled occupations that the host population does not want, categorized as dirty, demanding, dangerous, and long hours for poor payment (3) which significantly affects their health (4, 5), and causes depression (6). For example, existing research indicates migrant workers in the global south suffer from poorer mental health and well-being due to poor working conditions, being economically disadvantaged, being in debt, or not having access to services (7), and are disproportionately vulnerable to mental distress due to financial barriers to accessing healthcare (8).
Despite the various vulnerabilities in destination countries, international migration has increased rapidly due to different push and pull factors. The number has almost doubled over the last three decades, from 150 million in 1990 to 280 million by mid-2020, representing 3.6% of the world's population. More than 86 million international migrants live in Asia, making it the second-largest destination after Europe (9). More than 169 million international migrants were engaged in the labour sector in their destination, representing 4.9% of the labour force in their destination countries (10).
In East Asia Pacific, Malaysia stands for the fourth-highest percentage of migrant workers, representing 15% of its labour workforce. Malaysia's economy has been heavily dependent on low-skilled migrant labour from neighbouring countries since 1990 due to the country's industrialisation and urbanization development and its population attainment of higher education. Although accurate data is unknown, the World Bank estimated the number of international migrant workers in Malaysia ranged from 2.96 million to 3.26 million, of whom 1.23 million to 1.46 million were irregular migrant workers in 2017 (11).
Over the years, Myanmar has become a significant cheap labour supplier of 4.25 million labour to different countries; because of its political and economic instability (12). Malaysia became the second most popular destination for Myanmar migrant workers and an estimated 140,461 Myanmar regular migrants in 2019 (13). The number of irregular migrants appears to be much higher; however, it was unclear.
The Malaysian government distinguishes migrant workers into skilled and technical workers and semi-skilled or unskilled workers. The regular and professional group is minimal, and they are properly recruited. However, on the other hand, the unskilled category comprises many irregular migrants who have entered the country irregularly for several reasons (14). Irregular migrants are defined as ‘migrant workers or members of their families, who are not authorized to enter, to stay or to engage in employment in a State” (15). Globally, their labour and remittances assist in meeting the needs of their family members and contribute to sustainable development goals (SDGs). In Malaysia, existing studies have focused mainly on the healthcare barriers facing refugees and asylum seekers (16) and regular workers (17, 18). In particular, no research has been conducted on the social determinants of Myanmar's irregular migrant workers in Malaysia. The purpose of this study was to investigate how their daily experiences, workplace conditions, and coping strategies related to the social determinants of their health and well-being.