literature review

The added value of trade unions - A review for the TUC of existing research

The aim of this report is to provide an overview of the current research evidence on the economic impact of workplace union representation. Our review focuses on quantitative studies that have been conducted on good quality, nationally-representative samples of British workplaces or employees, and we rely where possible on results from multivariate statistical analyses which control for observable differences between union and non-union workplaces or employees. We utilise evidence from qualitative case studies where this serves to fill in gaps in the quantitative literature.