The labor market in low-income countries is typically characterized by nonstandard work, imprecise employers, uncertain income, and low labor market participation. This study elucidates the social protection of informal workers as a consequence of their associations, particularly in emerging countries. A systematic review was conducted, which included studies focusing on social security, socio-economic protection, informal workers, unorganized workers, organizing, and association in emerging economies. It is observed that various forms of association have significantly promoted livelihood and ensured the socio-economic rights of workers, but partially in different contexts. This study contributes to the informal workers’ unionization and social protection discourse by highlighting the implications on research and practice.