Trade unions are called to increase their influence on policy-making by becoming more politically active and use social media, but only a few studies investigate unions’ online political activism. We propose that industrial relations regime of a country relates to unions’ perceived opportunities for mobilisation and thereby also unions’ online political activism. We test this argument with the help of data about European trade union confederations’ political mobilisation on YouTube, 2007–2017. The results showed, expectedly, that resource-rich confederations in the organised corporatist regime (Scandinavia) use YouTube for political activism to lesser degree than in other regimes; when these confederations do pursue political activism, such videos are often related to elections and reflect the political party-union relationship. Unexpectedly, the resource-poor confederations in the transitional regime (Central and Eastern Europe) mobilised politically on YouTube to the same extent as have the confederations in the social partnership, liberal and state-centred regimes.

中文翻译：

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YouTube 上的政治运动：工会在欧洲的动员

工会被要求通过在政治上更加活跃和使用社交媒体来增加他们对决策的影响，但只有少数研究调查了工会的在线政治活动。我们建议，一个国家的劳资关系制度与工会感知到的动员机会有关，因此也与工会的在线政治活动有关。我们借助 2007-2017 年 YouTube 上有关欧洲工会联合会政治动员的数据来检验这一论点。结果显示，与其他政权相比，有组织的社团主义政权（斯堪的纳维亚）资源丰富的联盟使用 YouTube 进行政治活动的程度低于其他政权；当这些联盟确实追求政治激进主义时，此类视频往往与选举有关并反映政党与工会的关系。没想到，