This book offers the first comparative study of far-right messaging and organizing efforts at the workplace level as well as responses by established trade unions, encompassing six European countries (Belgium, France, Germany, Hungary, Italy, Poland). Drawing on semi-structured interviews with workers and trade union actors with a focus on the automobile industry, the volume develops a classification of far-right strategies and trade union counter-strategies in comparative perspective. Based on a research project in cooperation with trade unions, the book is situated at the interface of comparative politics, industrial sociology, political economy, and political sociology.