Under which conditions do unions succeed in pushing back dualization? A configurational study of collective agreements in Portugal
通过分析葡萄牙2003至2019年间52份集体协议，发现工会动员资源的能力（高密度或阶级导向意识形态）是保障非标准工人权益的必要但非充分条件，还需结合行业增长或低雇主密度等条件。
Abstract This article explores the conditions under which unions achieve inclusive outcomes for nonstandard workers in their collective agreements. Using fsQCA, it compares 52 collective agreements signed in Portugal between 2003 and 2019. Additionally, it reports on three short case studies. Results show that the unions’ potential to mobilize resources in favour of outsiders is crucial and is due to either high union density or unions’ class‐oriented ideology. However, although a high potential to mobilize resources is necessary, it is not sufficient for pro‐outsider provisions in collective agreements. In a context of growing liberalization of industrial relations, unions only include these clauses in their collective agreements in one of the following circumstances: (i) the combination of high union density and sectoral growth, (ii) the combination of a class‐oriented union signing the agreement and low employer density and (iii) the combination of high union density and a class‐oriented union signing the agreement.