“…Focusing on the firm, rather than the neighourhood, is also motivated by the active literature on the role of firms for understanding earnings differences between immigrants and natives (Aydemir and Skuterud, 2008;Barth et al, 2012;Brinatti and Morales, 2021;Phan et al, 2022), to which I also contribute. Relative to these papers, which emphasise the role of sorting across high-or low-paying firms in determining immigrants' contemporaneous wages, I show how a specific, time-varying characteristic of firms, namely the conational share at the time of first employment, has persistent long-term effects on an immigrant's labour market outcomes and in particular employment.…”