This study focuses on the labour market dimensions of temporary migration by quantitatively exploring the relationship between temporary migration and wage inequality. Over recent decades, there has been a growing emphasis on migration management in shaping migration policies across the world, especially in the Anglophone settler societies. At the same time, temporary migration policies have been criticized for contributing to the creation of inequalities. This study investigates wage inequality among temporary migrants between 2010 and 2019 in Aotearoa New Zealand, a period when the number of people holding temporary visas more than doubled. Despite the increase in this population of temporary migrants, our analysis of administrative data has shown that the overall level of wage inequality of temporary migrants holding work visas declined between 2010 and 2019. The study uses the Shapley‐value decomposition approach to quantify the contributions of skills, nationality and migration status on wage inequality, factors that are associated with the migration system and the composition of migrants. Results suggest that skills and nationality were the key factors that have led to decrease wage inequality over the period. In contrast, migration status has a small countervailing effect on the decreases in wage inequality. Our analysis concludes that wage inequality is shaped by two factors in the case of temporary migration. The first is the migration system itself which sets different conditions for migrants in terms of skills and migration status, and the second is the composition of the migrant population.

中文翻译：

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临时移民和工资不平等：技能、国籍和移民身份对新西兰新西兰的影响


本研究通过定量探讨临时移民与工资不平等之间的关系，重点关注临时移民的劳动力市场维度。近几十年来，世界各地，特别是英语定居者社会，在制定移民政策时越来越重视移民管理。与此同时，临时移民政策也因造成不平等而受到​​批评。这项研究调查了 2010 年至 2019 年间新西兰临时移民的工资不平等情况，在此期间，持有临时签证的人数增加了一倍多。尽管临时移民人口有所增加，但我们对行政数据的分析表明，2010年至2019年间，持有工作签证的临时移民的工资不平等总体水平有所下降。该研究采用沙普利值分解方法来量化临时移民的贡献。技能、国籍和移民状况对工资不平等的影响，与移民制度和移民构成相关的因素。结果表明，技能和国籍是这一时期减少工资不平等的关键因素。相比之下，移民身份对工资不平等的减少具有较小的抵消作用。我们的分析得出的结论是，在临时移民的情况下，工资不平等是由两个因素决定的。一是移民制度本身对移民在技能、移民身份等方面设定了不同的条件，二是移民人口的构成。