<p>The workforce from South Asian countries used out-migration as a route to escape from unemployment and poverty prevailing in those countries. The search for a better standard of living also motivates workers to migrate from low-income countries to high-income developed countries. Generally, such migrations are highly gendered and temporary. The left-behind families in source countries are one of the important outcomes of such migration. The absence of male family heads and remittances transferred by them from the destination countries influences the labour supply behaviour of non-migrant family members, particularly left-behind wives. Kerala, the southern state of India, has a long tradition of international workforce migration, mainly to the Gulf countries. In this scenario, the article examines the influence of solo male out-migration on the labour supply behaviour of left-behind wives in Kerala. The study’s findings are based on an extensive field survey conducted among 780 sample respondents of left-behind wives and married women from the two migration-intensive districts—Kollam and Malappuram of Kerala. The logistic regression model is used to analyse the impact of the Gulf migration status of husbands, individuals, households, and regional-level characteristics on the labour supply behaviour of left-behind wives. The main findings of the study show that although the left-behind wives are relatively younger and more educated than the married women in non-migrant households, their labour force participation rate is lower than that of married women in non-migrant households. The Gulf migration status of husbands, education status, children belonging to the age groups of (0–5) and (6–14), time spent on unpaid work, and non-labour income are the important variables that influence the labour supply behaviour of left-behind wives in Kerala.</p>